Texas Instruments TPA0103 User's Manual
Contents
1. CAUTION Stereo DC Power In Out Sm oz NL o oS ES 5 9 8 7 8 oF Q ES O o i O Speaker og O O Output ao 2m S O o5 5 So e o O l Headphone Output Quick Start Guick Start List for Platform 2 2 Quick Start List for Platform Follow these steps when using the TPA0103 EVM with the TI Plug N Play Audio Amplifier Evaluation Platform see the platform user s guide SLOU011 for additional details Numbered callouts for selected steps are shown in Figure 2 1 and details appear in Chapter 3 J Platform and TPA0103 EVM preparations 1 Ensure that all external power sources are set to OFFand thatthe platform power switch 1 is set to OFF 2 Install a TPA0103 module in platform socket U2 taking care to align the module pins correctly 3 Use switch S2 to select or bypass the signal conditioning EVM U1 Setting the platform and the EVM for Center or L R as indicated in the tables below will cause the EVM to operate in the center channel mode BTL speak er when no plug is present in headphone jack J10 and in the L R single ended mode headphone when a plug is inserted into platform headphone jack J10 4 Setthe jumpers on the platform as indicated in Table 2 3 Table 2 3 TI Plug N Play Platform Jumper and Switch Settings for the TPA0103 OUTPUTMODE se JP7 ss s2 s Notes 1 X Don2. 009228 S1 EE R aa COUT O Bi oa lt Mute e lt 33 uF 1000 uF ul 33 uF 1000 uF Table 3 4 Typical TPA0103 EVM Jumper Settings for Stereo Headphone Output 1 e ss s ss Note ON shunt installed OFF open X don t care Details 3 17 TPA0103 Audio Power Amplifier Evaluation Module Parts List 3 5 TPA0103 Audio Power Amplifier Evaluation Module Parts List Table 3 5 TPA0103 EVM Parts List m EVM Manufacturer Ref C1 C2 C6 C7 C5 C9 C10 C3 C8 C12 C11 R1 R4 R7 R10 R15 R16 R18 R5 R6 R11 R12 R13 R14 R17 1 S5 U1 PCB1 3 18 Capacitor 1 uF 80 20 nonpolarized Capacitor 2 2 uF 20 nonpolarized Capacitor 5 pF Capacitor 10 uF 6 3 V Resistor 20 kQ 1 8 W 5 Resistor 100 kQ 1 8 W 5 Pot 200 kQ 1 8 W 20 Thru hole Header 2 position Shunts IC TPA0103 3 channel audio amplifier PCB TPA0103 EVM 1206 1206 0805 0805 0805 2mm 2mm 24 pin TSSOP 4 X Murata Newark GRM42 6Y5V105Z16BL 93F2254 TDK C3216X5R1A225 Panasonic ECU V1H050CCN Panasonic ECS TOJY106R Panasonic ERJ 8GEYJ203V Panasonic ERJ 6GEYJ104V Bourns 3323P 1 204 Norcomp 3M TI TPA0103PWP TI SLOP103 Digi Key PCCO50CNCT ND Digi Key PCS1106CT ND Digi Key P20KKABK ND Digi Key P100KABK ND Digi Key 3323P 1 204ND
3. e R LI U5 R adt i o Stereo GND gt J10 Headphone S3 Headphone Amplifier Lp Output ie Sr i e D gt L__g L U5 3 3 3 1 Signal Conditioning The audio signal from the input jacks can be applied to the signal conditioning socket U1 if an EVM is installed there or socket U1 can be bypassed and the audio input signal applied directly to the inputs of the TPA0103 Switch S2 selects signal conditioning or bypasses it 3 3 3 2 Headphone Output Jack Switch S3 is the source select for the stereo headphone output jack J10 The headphone jack is capacitively coupled via 470 uF electrolytics and can output either the signal from the headphone amplifier in socket U5 or the signal from the TPA0103 power amplifier installed in socket U2 as determined by the setting of headphone source select switch S3 When S3 is set to the power amplifier position U2 U4 the headphone jack is connected to the TPA0103 left and right OUT output lines When a plug is inserted into the jack signals output through J10 are returned to platform ground requiring single ended power amplifier operation A switch inside the headphone jack produces a control signal that can be routed to the power amplifier socket to shut down the TPAO103 EVM or switch it to stereo single ended headphone output mode when a plug is inserted Source select switch S3 connects the headphone jack to the output lines of either
4. Digi Key 2163 02 ND Digi Key 953170 30 ND Details
5. 6 Connect the SDWN pin to Vpp through a Normally Open switch 7 Connect a 4 Q to 8 Q speaker to the module COUT and COUT pins Power up 8 Verify correct voltage and input polarity and set the external power supply to ON 9 Adjust the signal source level and EVM gain levels as needed 2 4 Quick Start Chapter 3 Details This chapter provides details on the TPA0103 IC the evaluation module and the steps in the Quick Start List additional application information and a parts list for the TPA0103 evaluation module Topic Page 3 NEDrecautionsq 1 079555 1 5 0550 0ECCEREISEEESUEEEDPEETTSS 3 2 3 2 The TPA0103 Audio Power Amplifier Evaluation Module 3 3 3 3 Using the TPA0103 EVM With the Plug N Play EvaluationiPlatform 5 EE Ire eee 3 7 3 4 Using The TPA0103 EVM Stand Alone 3 16 3 5 TPAO0103 Audio Power Amplifier Evaluation Module Parts List 3 18 3 1 Precautions 3 1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to Vcc power input connector J1 J2 and or Vpp power input connector J6 are correct Overvoltage or reverse polarity power applied to these terminals can open onboard soldered in fuses and cause other damage to the platform installed evaluation modules and or the power source Inserting or Removing EVM Boards Do not insert or remove EVM boards with power appli
6. R12 100 kQ Details Using The TPA0103 EVM With the Plug N Play Evaluation Platform 3 3 2 1 S1 Shutdown Jumper To have the module amplifier IC enter the shutdown mode when the module mute control input is activated set shutdown jumper S1 to ON The mute control output pin on the TPA0103 amplifier IC goes high when the mute mode is selected by the output mode jumpers S2 and S4 Jumper S1 connects the mute output pin to the shutdown control input pin of the IC so that when S1 is ON the IC is forced into shutdown mode instead of mute mode when the mute mode is selected When S1 is OFF a pulldown resistor on the module holds the IC shutdown control input pin low keeping the IC out of the shutdown mode The shutdown mode reduces IC current consumption to approximately 5 pA compared to approximately 1 5 mA in the mute mode It takes longer however to resume normal operation from the shutdown mode approx 1 s to 2 s than it takes to resume normal operation from the mute mode approx 100 ms to 500 ms 3 3 2 2 S2 and S4 Output Mode Control Jumpers Two IC amplifier output mode control pins select among three output modes and mute These pins Mode A and Mode B are brought out to module pins and also have jumpers that can hardwire the IC amplifier control inputs high Table 3 2 shows the relationship between the IC amplifier control inputs and the output modes Table 3 2 TPA0103 Output Modes TERMINAL 3 Channel Center
7. VDD VDD SHUTDOWN NC MUTE OUT HP LINE COUT COUT MODE B MODE A GND HS GND HS ROUT RIN RINHP VDD GND HP L R12 100 kQ COUT MODE A The TPA0103 audio amplifier IC is a low voltage CMOS device intended primarily for desktop and notebook PCs In the typical application the center channel amplifier is driven from a mix of the L R inputs to produce a monaural representation of the stereo signal The center channel amplifier can be shut down independently of the L R output for speaker muting in headphone applications The TPA0103 also features a full shutdown function for power sensitive applications reducing current consumption to 5 UA It is supplied in a very small 24 pin TSSOP thermal surface mount package and has been designed to operate from low supply voltages between approximately 3 V and 5 5 V and deliver full power at distortion levels of less than 0 25 THD N from a 5 V supply Figure 3 4 Details The TPA0103 Audio Power Amplifier Evaluation Module Figure 3 4 TPA0103 Amplifier IC TPA0103 C OUT C IN md C OUT SHUTDOWN MODE A MODE B R HP IN R Line IN R OUT HP Line L HP IN L Line IN LOUT The IC includes three separate amplifier channels a left and right stereo pair single ended and a bridged tied load BTL center channel In the BTL mode the two output lines of the center cha
8. t care 2 Set S2to ON when signal conditioning board is installed in U1 set S2 to OFF when no signal conditioning board is installed 5 Set the jumpers on the TPA0103 EVM as indicated in Table 2 4 Table 2 4 TPA0103 EVM Jumper settings L ewmmwoe s s Note OFF Open ON Closed Power supply 6 Select and connect the power supply a Connect an external regulated power supply set to a voltage between 3 V and 5 5 V to platform Vpp power input connector J6 taking care to observe marked polarity or b Install a voltage regulator EVM SLVP097 or equiv in platform socket U6 Install a 9 V battery in B1 or connect a 7 V 12 V power source to a platform Vcc power input J1 or J2 and jumper the appropriate power input see platform user s guide Inputs and outputs 7 Ensure that signal source level adjustments and the EVM gain controls R13 R14 and R17 are set to minimum 8 Connect the audio source to left and right RCA phono jacks J3 and J5 or stereo miniature phone jack J4 9 Connect a 4 O to 8 2 speaker to the left and right BLACK speaker connectors of J8 DO NOT USE RED CONNECTORS OF J8 Power up 10 Verify correct voltage and input polarity and set the external power supply to ON If Vcc and an onboard regulator EVM are used to provide Vpp set platform power switch S1 to ON 11 Adjust the signal source level and EVM gain levels R13 R14 and R17 as needed Quick Start 2 3 Guick St
9. the headphone amplifier socket U5 or the power amplifier sockets U2 U4 mM To route the TPA0103 single ended stereo headphone amplifier outputs to the headphone output jack J10 set switch S3 to the power amplifier position U2 U4 Details 3 11 Using The TPA0103 EVM With the Plug N Play Evaluation Platform 3 3 4 Mode Control The TPA0103 EVM is equipped with a mode control input pin that receives a control signal from the platform This EVM pin is connected to the amplifier IC Mode A output mode control input pin The state of this input in conjunction with the state of the Mode B output mode control input pin controls the output mode of the amplifier IC on the EVM When the EVM mode control input pin Mode A is high the TPA0103 amplifier IC on the module either enters the mute mode and dissipates very little power when Mode B jumper S2 on the EVM is set to OFF When S2 is set to ON a high on the EVM mode control input pin causes the amplifier IC to enter the L R stereo outputs only mode When the EVM mode control input is tied to GND or allowed to float the 3 channel output mode is selected if S2 is set to OFF and the center channel only output mode is selected if S2 is set to ON In the typical application output mode switching allows the TPA0103 to operate the BTL center channel to drive a speaker and then switch to stereo left and right single ended mode to drive headphones when a plug is inserted into the headph
10. O BE FULLY AT THE CUSTOMER S RISK In order to minimize risks associated with the customer s applications adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards Tl assumes no liability for applications assistance or customer product design TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or relating to any combination machine or process in which such semiconductor products or services might be or are used Tl s publication of information regarding any third party s products or services does not constitute Tl s approval warranty or endorsement thereof Copyright 1998 Texas Instruments Incorporated Preface Related Documentation From Texas Instruments B TI Plug N Play Audio Amplifier Evaluation Platform literature number SLOUO 11 provides detailed information on the evaluation platform and its use with TI audio evaluation modules B TPA0103 3 CHANNEL AUDIO POWER AMPLIFIER STEREO SINGLE ENDED 500 mW AND MONO BTL 1 75 W literature number SLOS167 This is the data sheet for the TPA0103 audio amplifier integrated circuit FCC Warning This equipment is intended for use in a laboratory test environment only It generates uses and can radiate radio frequency energy and has not been tested for compliance with the limits of com
11. Only L R Only Wue L T Moves Note L logic low H logic high WW nM j Jumper S2 connects the Mode B output mode control input pin on the amplifier IC directly to Vpp regardless of the state of the Mode B module control input When S2 is OFF a pulldown resistor on the module holds the Mode B output mode control input pin low The Mode B control input pin is not directly controlled by anything on the platform the platform socket for that module pin is N C Jumper S4 connects the Mode A output mode control input pin on the amplifier IC directly to Vpp regardless of the state of the Mode A module control input or the input select module control input HP L or the status of jumper S3 when autosense jumper S5 is set to ON When S4 is OFF a pulldown resistor on the module holds the amplifier IC Mode A output mode control input pin low Details 3 9 Using The TPA0103 EVM With the Plug N Play Evaluation Platform 3 3 2 3 S3 Input Select Jumper To select the line inputs set input select jumper S3 to OFF To select the headphone inputs set input select jumper S3 to ON The TPA0103 amplifier IC has two separate inputs for each of the left and right stereo channels An internal multiplexor selects which input will be connected to the amplifier based on the state of the HP LINE pin on the IC However the EVM HP L control input pin is not directly controlled by anything on the platform the platform so
12. art List for Stand Alone 2 3 Quick Start List for Stand Alone Follow these steps to use the TPA0103 EVM stand alone or connect it into existing circuits or equipment Connections to the TPA0103 module header pins can be made via individual sockets wire wrapping or soldering to the pins either on the top or the bottom of the module circuit board Numbered callouts for selected steps are shown in Figure 2 2 and details appear in Chapter 3 Figure 2 2 Quick Start Module Map COUT O GND O LOUT O 009228 J Power supply 1 Ensure that all external power sources are set to OFF 2 Connectan external regulated power supply set to 5 V to the module VDD and GND pins taking care to observe marked polarity TPA0103 EVM jumpers Setting the EVM for Center or L R as indicated in the table below will cause the EVM to operate in the center channel BTL mode speaker 3 Set the jumpers on the TPA0103 EVM as indicated in Table 2 5 Table 2 5 TPA0103 EVM Stand Alone Jumper settings EVMOUTPUTMODE si s2 s s s Note OFF Open ON Closed Inputs and outputs 4 Ensure that signal source level adjustments and EVM gain controls R13 R14 and R17 are set to minimum 5 Connect the audio source to the module IN and GND pins taking care to observe marked polarity
13. cket for that module pin is N C The amplifier IC HP LINE control pin can be tied high manually via jumper S3 or connected to the amplifier IC Mode A control pin via jumper S5 so that it follows that control signal For manual control jumper S3 connects the HP L module control input pin to Vpn so that when S3 is ON the headphone inputs are selected When S3 is OFF a pulldown resistor on the module holds the IC shutdown control input pin low selecting the line inputs 3 3 2 4 S5 Autosense Jumper 3 10 To have the IC amplifier input select control input pin HP Line follow the state ofthe Mode A IC output mode select pin set autosense jumper S5 to ON This automatically selects the headphone inputs when the Mode A control input goes high Note that when autosense jumper S5 is set to ON amplifier IC control input pins HP Line and Mode A are tied to Vpp and the Mode A control signal will have no effect if either jumper S3 or jumper S4 are set to ON Details Using The TPA0103 EVM With the Plug N Play Evaluation Platform 3 3 3 Signal Routing Signal flow on the platform is controlled by two signal routing switches as shown in Figure 3 5 Figure 3 6 Platform Signal Routing and Outputs Off acerca can nae to ph R i U2 i P J8 TPA0103 i S2 i Speaker o i Amplifier EVM gt Output I L AA i _ On l U2 U4 c
14. ed When the TPA0103 EVM is installed amplified audio output signals leave the platform through the negative left and right compression connectors for stripped speaker wires J8 and through a miniature 1 8 stereo phone jack J10 for headphones The TPA0103 EVM BTL center channel audio output from amplifier IC leave the platform via the left and right negative black compression connectors of J8 The positive red connectors of J8 are not used Each output is isolated from system ground allowing the TPA0103 center channel power amplifier to operate in the highly efficient bridge tied load configuration for driving a speaker The platform headphone jack J10 is capacitively coupled to source select switch S3 which connects J10 to the output lines of either the headphone amplifier socket or the power amplifier sockets Figure 3 6 When the TPA0103 single ended left and right stereo headphone output signals are routed to J10 by S3 signals output via J10 are returned to platform ground when a plug is inserted Figure 3 8 Figure 3 8 Typical Headphone Plug Left Right GND Details 3 15 Using The TPA0103 EVM Stand Alone 3 4 Using The TPA0103 EVM Stand Alone Using the TPA0103 Audio Power Amplifier Evaluation Module stand alone is much the same as using it with the platform The same 3 V to 5 5 V power supply range and the isolated OUT and OUT lines for BTL operation requirement exists Note that the mute signal app
15. ed damage to the EVM board the platform or both may result Figure 3 1 The TI Plug N Play Audio Amplifier Evaluation Platform o Oo o m lt wo o D Op 2 F S DC Y re Power In Out Power Input Sm O oR O O 8 lo 8 JE s O lo 1 Audio e Input 9 Speaker 9 9 2 O Oo Output o o Q o o Q 5 Q o amp O Q O C AUTION O Do not insert or remove O EVM boards with power applied Oo Zy 9 m NS Headphone 77 Output Plug N Play Audio Amplifier Evaluation Platform SLOP097 Rev C 1 SLNAWNYLSNI 3 2 Details The TPA0103 Audio Power Amplifier Evaluation Module 3 2 The TPA0103 Audio Power Amplifier Evaluation Module The TPA0103 Audio Power Amplifier Evaluation Module is powered by a TPA0103 3 channel audio power amplifier capable of delivering 535 mW of continuous power to each ofthe left and right single ended 4 O speaker loads and 1 75 W of continuous power BTL to a center channel 4 O load The amplifier IC can be configured for center channel only center or L R channels or three channel operation via two mode terminals The evaluation module includes jumpers for setting modes and control inputs for shutdown selection between two sets of s
16. eer ent a a a T UPEReRke a 4 39 Seek eu deni 3 11 3 9 4 Mode Gontrol cnise dui iuku e cadet km C EARN NARATRATRE ERE RE REN RE 3 12 3 9 5 Power Requirements IA II Aaa 3 14 3 8 6 Inputs and Outputs iii AA eet eee 3 15 3 4 Using The TPA0108 EVM Stand ALone 3 16 3 4 4 TPA0103 EVM Connected for Center Channel BTL Output 3 16 3 4 2 TPA0103 EVM Connected for Stereo Headphones Output 3 17 3 5 TPAO0103 Audio Amplifier Evaluation Module Parts List 3 18 Figures UWA 69 Qo o OC Po Qe dedu tera cu ce Fac oT EN o The TI TPA0103 Audio Amplifier Evaluation Module 1 4 Quick Start Platform Map ii n 2 2 Quick Start Module Map riccii s cira inna cian viae e eee eens 2 4 The TI Plug N Play Audio Amplifier Evaluation Platform 3 2 TPAOTOSTE VII Sic acne att adiecit bya dyentipiddidadddsadd in eda ebo deaths 3 3 TPA0103 EVM Schematic Diagram iii nii AA e 3 4 TPA0103 Audio Amplifier IC lssssssssssssssssssss III 3 5 TPAOT1093 EVM J tmipers ii cete e denne Ren edet dane lu ended nets 3 8 Platform Signal Routing and Outputs 3 11 Mute Mode and Polarity Control 000 cece kaaa aa 3 12 Typical Headphone Ua aw 3 15 TPA0103 EVM Connected for Center Channel BTL Output 3 16 TPA0103 EVM Connected for Stere
17. escription The TPA0103 Audio Power Amplifier Evaluation Module is a complete low power three channel audio power amplifier It consists of the TI TPA0103 3 Channel Audio Power Amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2 inches by 1 inches Figure 1 1 Figure 1 1 The TI TPA0103 Audio Amplifier Evaluation Module MODEA O H r12 MODE B O TPA0103 EVM REV A Lit SLOP103 c5 s n SDWN O S1 oo Re a COUT O R5 D GND O LOUT O 3 009228 Single in line header pins are mounted to the underside of the module circuit board to allow the EVM to be plugged into the TI Plug N Play Audio Amplifier Evaluation Platform or to be wired directly into existing circuits and equipment when used stand alone The platform has room for a single TPA0103 evaluation module and is a convenient vehicle for demonstrating Tl s audio power amplifier and related evaluation modules The EVMs simply plug into the platform which auto matically provides power to the modules interconnects them correctly and connects them to a versatile array of standard audio input and output jacks and connectors Easy to use configuration controls allow the platform and EVMs to quickly model many possible end equipment configurations There i
18. he center channel input are adjustable between approximately 2 and 22 and the headphone inputs are fixed at a gain of 1 In the typical application in which the TPA0103 powers left and right speakers until headphones are plugged in the line input gain can be set so that the two inputs provide approximately the same perceived listening level in the headphones as from the speakers An input multiplexor in the amplifier IC selects between the two inputs according to the state of the HP LINE IC pin The TPA0103 amplifier IC like most other amplifiers exhibits its best distortion and noise performance at lower gain levels see the TPA0103 data sheet Gain versus total harmonic distortion THD should be considered in each application Both the module input signal level and the TPA0103 module gain should be adjusted to obtain the lowest overall distortion level for a particular overall gain A quick rule of thumb everything else being equal the module input signal level should be as high as possible without clipping or overloading the TPA0103 input and the TPA0103 gain should be kept as low as possible Details Using The TPA0103 EVM With the Plug N Play Evaluation Platform 3 3 Using The TPA0103 EVM With the Plug N Play Evaluation Platform The TPA0103 Audio Amplifier Evaluation Module was designed to be used with the TI Plug N Play Audio Amplifier Evaluation Platform It simply plugs into socket U2 The following paragraphs provide additiona
19. l details for using the TPA0103 EVM with the platform 3 3 1 Installing and Removing EVM Boards TI Plug N Play evaluation modules use single in line header pins installed on the underside of the module circuit board to plug into sockets on the platform The EVM pins and the platform sockets are keyed such that only the correct type of EVM can be installed in a particular socket and then only with the proper orientation Evaluation modules are easily removed from the platform by simply prying them up and lifting them out of their sockets Care must be taken however to prevent bending the pins 3 3 1 1 EVM Insertion 1 Remove all power from the evaluation platform 2 Locate socket U2 on the platform 3 Orient the module correctly 4 Carefully align the pins of the module with the socket pin receptacles 5 Gently press the module into place 6 Checkto be sure that all pins are seated properly and that none are bent Over 3 3 1 2 EVM Removal 1 Remove all power from the evaluation platform 2 Using an appropriate tool as a lever gently pry up one side of the module a small amount 3 Change to the opposite side of the module and use the tool to pry that side up a small amount 4 Alternate between sides prying the module up a little more each time to avoid bending the pins until it comes loose from the socket 5 Lift the EVM off of the platform Details 3 7 Using The TPA0103 EVM With the Plug N Play Evaluation Platfo
20. lied to the EVM Mode A pin must be able to sup ply enough current to overcome the pulldown resistor on the module 100 KQ possibly in parallel with a second pulldown resistor 100 kO 3 4 4 TPAO0103 EVM Connected for Center Channel BTL Output Figure 3 9 TPA0103 EVM Connected for Center Channel BTL Output 5V O GND H ROUT O Audio GND O Input ss El COUT Right HP L O co cio S4 El MODE A O A R12 MODE B O TPA0103 EVM REV A Lit SLOP103 Audio C5 s2 BEY sDWN a Input c3 Left S mn RN cour G External Mute R5 ESI GND O Control tive high 009228 LOUT O I active high 5V Table 3 3 Typical TPA0103 EVM Jumper Settings for Center Channel BTL Stand Alone EM s s s sa ss Note ON shunt installed OFF open X don t care 3 16 Details Using The TPA0103 EVM Stand Alone 3 4 2 TPA0103 EVM Connected for Stereo Headphones Output Figure 3 10 TPA0103 EVM Connected for Stereo Headphones Output 5V Audio Input Right Audio Input Left VDD C11 O GND GND G ss Oo COUT O HP L O co cio 54 El MODE A O m R12 MODE B O TPA0103 EVM REV A Lit SLOP103 Eb s2 ENS spwne
21. nnel operate 180 out of phase with each other for increased power The center channel speaker load is connected directly across COUT and COUT and neither line is connected to ground BTL operation provides many benefits including quadruple the output power of single ended operation and no need for bulky output coupling capacitors The left and right stereo channels operate in the single ended mode the speaker load is connected between the OUT terminal through an output coupling capacitor to system ground For more information see the TPA0103 amplifier IC data sheet TI Literature Number SLOS167 3 2 2 Output Modes The TPA0103 amplifier operates in any of three output modes or mutes according to the status of the two control terminals MODE A and MODE B as shown in Table 3 1 Table 3 1 TPA0103 Output Modes TERMINAL 3 Channel Mute Center Only UR Oniy mea t H Ct AOA Note L logic low H logic high Details 3 5 The TPA0103 Audio Power Amplifier Evaluation Module 3 2 3 3 6 Inputs and Gain The left and right single ended channels remain separate from input to output On the TPA0103 EVM board the left and right channel inputs are mixed to produce a monaural representation of the stereo signal and applied to the amplifier IC center channel input Each of the left and right channels has two separate signal inputs They are called line and headphone HP and are pin selectable The line inputs and t
22. o Headphones Output 3 17 Tables LL g Oa fh WD O P c1 vi Typical TI Plug N Play Platform Jumper and Switch Settings for the TPA0103 2 1 Typical TPA0103 EVM Jumper Settings 2 1 TI Plug N Play Platform Jumper and Switch Settings for the TPA0103 2 3 TPA0103 EVM Jumper Settings mannn 2 3 TPA0103 EVM Stand Alone Jumper Settings 2 4 TPAO0108 Output MOd6S ii Adr dPRI Ee e rRiPRer sgerbe teP3erRres 3 5 TPA0103 Output Modes sssssssssssssse eee rm 3 9 Typical TPA0103 EVM Jumper Settings for Center Channel BTL Stand Alone 3 16 Typical TPA0103 EVM Jumper Settings for Stereo Headphones Output 3 17 TPA0103 EVM Parts List Ia 3 18 Chapter 1 Introduction This chapter provides an overview of the Texas Instruments TPM TPA0103 Audio Amplifier Evaluation Module SLOP103 It includes a list of EVM features a brief description of the module illustrated with a pictorial diagram and a list of EVM specifications Topic Page Vel EeaturesEllghlights sossconsconnonboansononansdnnboaanacpodnnant 1 3 i 2 Descriptiong 95 55 55 50 2 050 5 0 P I2 SEDES 1 4 1 3 TPA0103 EVM Specifications imma 1 4 Introduction 1 1 Feature Highlights Feature Highlights The TI TPA0103 Audio Amplifier Evaluation Module and the TI Pl
23. one jack 3 3 4 1 Headphone Jack Control Signals The platform headphone output jack J10 contains an internal switch that changes the state of a pair of control lines when a plug is inserted Figure 3 7 Each control line is pulled down by a 1 kQ resistor to ground R4 and R5 The switch in the headphone jack pulls one line or the other up to Vpp through a 240 Q resistor R3 depending on whether a plug is inserted in J10 or not Figure 3 7 Mute Mode and Polarity Control 3 12 VDD Polarity JP8 JP6 WAUAWA J10 Lo Mode U2 Headphone Power Jack Hi Mute Amplifier R5 SPK Beas eee 1kQ U2 U4 Details Using The TPA0103 EVM With the Plug N Play Evaluation Platform 3 3 4 2 Mute Mode Select JP6 A 3 pin jumper header JP6 on the platform functioning as an SPDT switch routes the control signal from the headphone jack to either the mute control input pin or the mode control input pin of the evaluation module B To switch the TPA0103 amplifier module between center channel speaker and stereo headphone modes using the control signal from the platform headphone jack jumper JP6 to MODE m For center channel only or 3 channel output modes as selected by EVM jumper S2 leave JP6 open 3 3 4 8 Mute Mode Polarity Select JP8 A second 3 pin jumper header JP8 on the platform selects the control signal polarity by connecting either the active high or the active low line f
24. otes 1 X Don t care OFF Open ON Closed 2 Set S2 to ON when signal conditioning board is installed in U1 set S2 to OFF when no signal conditioning board is installed Table 2 2 Typical TPA0103 EVM Jumper Settings _oururmone s Note OFF Open ON Closed Topic Page ZMA Pre calo ni WW AA steve rer overs Dele tete ets inte 2 2 2 2 Quick Start List for Platform esee nnn 2 3 2 3 Quick Start List for Stand Alone 2 4 2 1 Precautions 2 1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to Vcc power input connector J1 J2 and or Vpp power input connector J6 are correct Overvoltage or reverse polarity power applied to these terminals can open onboard soldered in fuses and cause other damage to the platform installed evaluation modules and or the power source Inserting or Removing EVM Boards Do not insert or remove EVM boards with power applied damage to the EVM board the platform or both may result Figure 2 1 Quick Start Platform Map 2 2 2661 SLNAWNYLSNI I SVX4L Noon Bin peg fp Do not insert or re
25. puting devices pursuant to subpart J of part 15 of FCC rules which are designed to provide reasonable protection against radio frequency interference Operation of this equipment in other environments may cause interference with radio communications in which case the user at his own expense will be required to take whatever measures may be required to correct this interference Trademarks Tl is a trademark of Texas Instruments Incorporated Contents Hogar AI AI ee ne ee eee 1 1 1 1 Feature Highlights ai 20 ce RII a 1 3 12 Description IA dh ma Reed RR eae e ee a ede ea 1 4 1 8 TPA0103 EVM Specifications 1 4 QUICK Start io EUREN 2 1 2 1 PrecautiOns 222 2ez e 2x Ue REY PREISEN RE WR Ss eye eb eee eee RE YR TISNER 2 2 2 2 Quick Start List for Platform ai WA AA eens 2 3 2 3 Quick Start List for Stand Alone waa 2 4 Details e P 3 1 31 I DI IA IA Decne IAA dae dada aa 3 2 3 2 The TPA0103 Audio Amplifier Evaluation Module 3 3 3 2 1 TPAO103 Audio Amplifier IC 3 4 3 2 2 Output MOdES AA 3 5 3 2 3 Inputs and Gaif AAA DEF ak am ar ERE ere Rete 3 6 3 3 Using The TPA0103 EVM With The Plug N Play Evaluation Platform 3 7 3 3 1 Installing and Removing EVM Boards 3 7 3 3 2 TPA0103Module Jumper Settings 3 8 3 9 9 Signal Rottilig otruicie
26. rm 3 3 2 TPA0103 Module Jumper Settings The TPA0103 EVM is equipped with several jumpers that act like SPST switches to allow module operation to be modified to suit various requirements In the following discussion setting a jumper to ON means that a shunt is installed across the two pins of the jumper Setting a jumper to OFF means that no shunt is installed on the jumper See Figure 3 5 In typical applications some or all of the jumper functions are controlled by the system microcontroller or external logic Note that jumpers S2 through S5 tie various amplifier control input pins directly to Vpp When one of these EVM jumpers is set to ON the signal on the associated EVM control input pin will have no effect In addition Vpp appears on that EVM control input pin Care should be taken to ensure that low impedance paths to ground are not provided through the circuitry that applies control signals to the EVM control input pins or that external circuits will not be upset by Vpp appearing on the EVM control input lines Figure 3 5 TPA0103 EVM Jumpers LOUT 3 8 R15 20 kQ ROUT GND HS GND HS NC NC LOUT ROUT LLINE IN RLINE IN RIN LHP IN RHP IN RINHP CIN RBYPASS TPA0103 VDD VDD VDD SHUTDOWN NC GND MUTE OUT HP LINE HP L COUT COUT MODE B MODE A COUT GND HS GND HS MODE A
27. rom the headphone jack to jumper JP6 m When JP6 is set to Mode set JP8 to Hi m When JP6 is open JP8 settings are ignored Details 3 13 Power Reguirements 3 3 5 Power Requirements 3 14 The TPA0103 Audio Power Amplifier Evaluation Module can operate from any voltage between approximately 3 V and 5 5 V however the TPA0103 amplifier IC on the module is characterized for operation at 3 3 V and 5 V For best performance highest output power with lowest distortion the module should be operated at approximately 5 V unless there is a specific reason for operating it from a lower voltage The TI Plug N Play Audio Amplifier Evaluation Platform with a voltage regulator EVM installed on it can provide a regulated Vpp supply from a wide variety of unregulated Vcc voltage inputs between approximately 5 5 V and 12 V including an on board 9 V battery Or an external regulated power source can be used to supply Vpp voltage to the platform and the TPA0103 evaluation module installed on it Although the TPA0103 amplifier IC draws approximately 0 9 A from the power supply during continuous full power output peak current draw can be as high as 1 5 A Any power supply connected to the platform should be capable of providing 1 5 A of current to avoid clipping the output signal during peaks Current consumption driving speakers at normal listening levels is typically 0 5 A or less The platform is equipped with overvoltage and reverse polarity s
28. s nothing to build nothing to solder and nothing but the speakers included with the platform to hook up 1 3 TPA0103 EVM Specifications Supply voltage range VDD wanananannnnananaanana 3Vto5 5V Supply current JH eres nrin esee ete knee kk Roe eed d ee 1 5 A max Continuous output power Po center channel THD 0 2 4 Q BTL Vpp 5 V 1 75 W L R channels THD 0 2 4 QO SE Vpp 5 V 535 mW L R channels THD 0 2 32 Q SE Vpp25 V 100 mW Audio input voltage Vj L RIN gais 2 22BTL 0 75 Vpp max URIN EP gained iii RR ERR 4 Vpp max Minimum load impedance Ri iia aaa 49 Introduction IET PA Quick Start The steps in this chapter can be followed to quickly prepare the TPA0103 audio amplifier EVM for use Using the TPA0103 with the TI Plug N Play Audio Amplifier Evaluation Platform is a quick and easy way to connect power signal and control inputs and signal outputs to the EVM using standard connectors The audio amplifier evaluation module can also be used stand alone by making connections directly to the module pins and it can be wired directly into existing circuits or equipment The platform switch and jumper settings shown in Tables 2 1 and the TPA0103 EVM jumper settings shown in Table 2 2 are typical for the TPAO103 EVM Table 2 1 Typical TI Plug N Play Platform Jumper and Switch Settings for the TPAO103 _ourpurmove se sr we N
29. tereo inputs and switching between output modes The module can be used with the TI Plug N Play Audio Amplifier Evaluation Platform Figure 3 1 or wired directly into circuits or equipment The module has single in line header connector pins mounted to the under side of the board These pins allow the module to be plugged into the TI platform which automatically makes all the signal input and output power and control connections to the module The module connection pins are on 0 1 inch centers to allow easy use with standard perf board and plug board based prototyping systems Or the EVM can be wired directly into existing circuits and equipment when used stand alone The module appears in Figure 3 2 and its schematic is shown in Figure 3 3 Figure 3 2 TPA0103 EVM R10 VDD O O GND i R8 n ss LE co cio 54 EI MODE A O t R12 MODE B O TPA0103 EVM REV A Lit SLOP103 C5 S DE SDWN O S1 Em R M COUT O R5 ER GND O LOUT O 009228 Details 3 3 The TPA0103 Audio Power Amplifier Evaluation Module Figure 3 3 TPA0103 EVM Schematic Diagram LOUT 3 2 1 3 4 R15 20 kQ TPA0103 Audio Amplifier IC GND HS GND HS NC NC LOUT ROUT LLINE IN RLINE IN LHP IN RHP IN CIN RBYPASS TPA0103
30. ug N Play Audio Amplifier Evaluation Platform include the following features TPA0103 Low Voltage Audio Power Amplifier Evaluation Module 535 mW single ended into 4 Q at 5 V L R channels 1 75 W bridge tied load BTL into 4 O at 5 V center channel 3 3 V and 5 V operation Low distortion lt 0 25 THD N at full power Ultra low current consumption in full shutdown mode Two sets of stereo inputs with internal MUX Module gain adjustable between approximately 2 and 22 Quick and Easy Configuration with The TI Plug N Play Audio Amplifier Evaluation Platform Evaluation module is designed to simply plug into the platform auto matically making all signal control and power connections Platform provides flexible power options Jumpers on the platform select power and module control options Switches on the platform route signals Platform provides quick and easy audio input and output connections Platform Power Options Onboard 9 V battery External 5 V 15 V DC Vcc supply inputs External regulated Vpp supply input Socket for onboard 5 V 3 3 V Vpp voltage regulator EVM Onboard overvoltage and reverse polarity power protection Platform Audio Input and Output Connections Left and right RCA phono jack inputs Miniature stereo phone jack input Left and right RCA phono jack outputs Left and right compression speaker terminal outputs Miniature stereo headphone jack output Introduction 1 3 Description 1 2 D
31. upply voltage input protection in the form of fused crowbar circuits I Vpp voltage applied to platform screw terminals J6 MUST NOT exceed the absolute maximum rating for the TPA0103 amplifier IC installed on the evaluation module 6 V or damage to the IC may result In no case should Vpp voltage of the incorrect polarity or in excess of 6 1 V be applied to screw terminals J6 of the platform or the power protection circuit on the Vpp line will trip Vcc voltage applied to the platform MUST NOT exceed the maximum voltage input specified for the voltage regulator module installed in socket U6 12 V for the SLVP097 or damage to the voltage regulator module may result In no case should Vcc voltage applied to the platform exceed 15 V or the overvoltage protection circuit on the Vcc bus will trip Details Inputs and Outputs 3 3 6 Inputs and Outputs 3 3 6 1 Inputs 3 3 6 2 Outputs The TI Plug N Play Audio Amplifier Evaluation Platform is equipped with several standard conectors for audio inputs and outputs In most cases audio signals enter the platform through either a pair of RCA phono jacks J3 and J5 or a miniature 1 8 stereo phone jack J4 Certain signal conditioning and amplifier EVMs however may have additional signal input connectors mounted on the module circuit board The platform audio signal input jacks J3 J4 and J5 are of the closed circuit type grounding the signal input lines when no plugs are insert
32. wi TEXAS INSTRUMENTS TPAO103 Audio Power Amplifier Evaluation Module User s Guide August 1998 Mixed Signal Products SLOUO15 IMPORTANT NOTICE Texas Instruments and its subsidiaries Tl reserve the right to make changes to their products or to discontinue any product or service without notice and advise customers to obtain the latest version of relevant information to verify before placing orders that information being relied on is current and complete All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement including those pertaining to warranty patent infringement and limitation of liability TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty Specific testing of all parameters of each device is not necessarily performed except those mandated by government requirements CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH PERSONAL INJURY OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE CRITICAL APPLICATIONS TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD T
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