UG-222 Evaluation Board User Guide
Contents
1. Rev 0 Page 13 of 20 3 2 anro amro anro mu HS rd 3 d 1 001 192 L 092 1 682 L 882 1 82 1 982 pou 634 138 J J I 15031 dt APT 1 P 15 2 X000 lt S 001 IGY 21 04 894 994 AP ASHESN AGTIX3 AGTIVS APT ox S ance anro oot 19104 MOLINON Md SNO1108 758 155 YS0 1 LSY 1104 304 41241 2103 v d Hm 25 dn3xvMe 67 t 2 yodi 59 govis 1u3 803 004 75 MEME EM 55 ion 2 15 4 sS SNOLLNG Ways 79 5 mE ON3 Dig 09 15 33 SEIS Et om ius 13549 28 1 n 44614508 e NU JOV4AYSLNI Ed 5 GiN ovd e 55 o osa 10899449 62 292 _ 1101 1 1 NI1V 1X S 21 a 0 vas q alt 3 0 lt lt lt lt lt lt lt 125 M 10163 6 292. vn DURO E ERINIR 6 Evaluation Board Hardware sse 3 Main Wido Wess tee RETIRER RENE 7 PowerSuppliesz tere ee 3 ADC SEU ee iet ere 8 SI M 3 Configuration Assist Tool sse 9 2 ee a i dee ete a 4 Low Noise Quick i 10 Using an Absolute Reference sse 4 WeighScale Demo tette eate 11 Connecting the AD7190 AD7192 to an External User Units Setup ivt i p eee ee 12 Microcontroller eit etii rte bei 4 Board schematics and 13 ur Scie ninh E Ordering Information 17 Using the AD7190 AD7192 Evaluation Board with the PC UE Nu 6 Related Likes eerie REVISION HISTORY 12 10 Revision 0 Initial Version Rev 0 Page 2 of 20 EVALUATION BOARD HARDWARE POWER SUPPLIES There are several power supply options on the AD7190 AD7192 evaluation board Connected to USB Connector The AD7190 AD7192 evaluation board is powered via the 5 V supply from the USB connector J51 This 5 V supply can be used to power the AD7190 AD7192 directly Link J1 should be placed in Position 5 V USB The 5 V supply from the USB connector can be regulated to 3 3 V using the on board ADP3303 3 a high precision low power 3 3 V output voltage regulator Therefore using Link J1 the 3 3 V can be used as the power supply to the AD7190 AD7192 Link J1 should be placed in Position 3 3 V The AD71
3. 400u 1 520 SS Samples Sampling Start 7 Capture Sampling Data Channel Selection Latest Data Analysis Results Number Samples 0 Mean Average 0 000000 y Maximum Value 0 000000 y Minimum Value 0 000000 y P P Noise RMS Noise 00v P P Resolution 0 0 Bit RMS Resolution 0 0 Bit 09551 006 AD7190EB SW V Figure 6 AD7190 AD7192 Evaluation Software Main Window Rev 0 Page 6 of 20 MAIN WINDOW Menu Bar File This allows you to write the current set of data to a file for later use log data as it is gathered and exit the program Board This allows you to alter the contrast on the LCD display Buttons Delete Data Clear Graphs This allows you to delete the data displayed in the graphs ADC Reset This allows you to reset the AD7190 AD7192 to its default power on settings ADC Setup This opens the ADC Setup window which allows you to configure the AD7190 AD7192 Low Noise Quick Test This allows you to access the noise testing software WeighScale Demo This allows you to access the weigh scale demonstration software User Units Setup This allows you to change the display units on the graph and histogram Sampling This allows you to sample continuously or to sample a specific number of samples When the Sampling Capture Defined Sample Set option is selected the sample size is entered in the Samples box Start Sampling This allows you to read samples
4. Phycomp Phycomp Phycomp Phycomp Phycomp Not inserted Phycomp Phycomp Phycomp Omron Keystone Tyco Electronics Amp Tyco Electronics Amp Phoenix Contact Not inserted Phoenix Contact Lumberg Molex Not inserted Everbouquet Tyco ADR421BRZ ADP3303ARZ 5 ADP3303ARZ 3 3 AD5258BRMZ10 CY7C68013A 56LFXC 24LC64 1 SN 76341 308LF HSMC C191 HSME C191 Not inserted CX5032GB24000HOPESZZ P6SMB68AT3G BAT721C BSS138N Not inserted 2238 867 15129 2238 586 15636 2238 786 15649 2238 246 13663 2255 206 13672 TAJA106MO16R BMB2A1000LN2 232270296001 232270461001 232270461002 232270461003 232270461508 Not inserted 232270461004 232270461009 232270464709 B3S 1000 5934594 1241050 4 1241050 8 1803332 Not inserted 1727010 1613 14 548190572 Not inserted MC1602C SYR 1 826629 6 Rev 0 Page 17 of 20 RELATED LINKS Resource Description AD7190 Product Page AD7190 4 8 kHz Ultralow Noise 24 Bit Sigma Delta ADC with PGA AD7192 Product Page AD7192 4 8 kHz Ultralow Noise 24 Bit Sigma Delta ADC with PGA ADP3303 Product Page ADP3303 High Accuracy anyCAP 200 mA Low Dropout Linear Regulator ADR421 Product Page ADR421 Ultraprecision Low Noise 2 500 V XFET Voltage References AD5258 Product Page AD5258 Nonvolatile I C Compatible 64 Position Digital Potentiometer Rev 0 Page 18 of 20 NOTES Rev 0 Page 19 of 20 NOTES ESD Caution ESD electrostatic discharge sensitive
5. conversion data When the board is connected to and possibly powered from a PC via a standard USB interface the PC software allows the graphical display of real time data logs them into a text file allows you to modify the AD7190 AD7192 internal settings and generally helps in understanding the part features and performance Finally the board s flexible interface structure allows it to be connected in a number of useful configurations For example the digital section of the evaluation board can be used inde pendently as a convenient digital interface for a user s own sensor design PCB or module containing the AD7190 AD7192 Alternatively an external microcontroller can be interfaced to the AD7190 AD7192 and thus the evaluation board can act as a complete analog front end for creating and debugging software on the user s own digital platform VOLTAGE REGULATOR PC AND LabVIEW BASED SOFTWARE 09551 001 Figure 1 AD7190 AD7192 Evaluation Board PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS Rev 0 Page 1 of 20 TABLE OF CONTENTS Eeat res scies 1 Software Installation sse 6 Introduction da eee ep ee e 1 Evaluation Software Installation sss 6 Generali Descriptio nic ii netter tee dete eee eee e eed 1 Evaluation Board Installation sse 6 Revision History innere e Oe e te s 2 Using
6. 301 XOL yoo vM mS a mS za 19 62 NIV N 310 3770 ON x x x x 4001 4 EN uos 82 NIV uaaig u3219 ua31 42245 9371 vam ATO m 723 28031 ueej9 3384 39V110A 203 sjulod 59 D Figure 13 EVAL AD7190EBZ EVAL AD7192EBZ Schematic Analog Z334 1d 2438 0d INIV 53 3SION a 92 39 3001 ool 545 Duinp M0 58 Zr lt 775 WOONIV yndul 3 AA 425859980 jou INON 10351592 5 KORAT er pup 103161 Konea m pJDOq UDI 90 bujejxe up JO tN 18 04d T SA 6438 0 eq os p UD 5 n a z0 2433 0d JOV4AYSLNI 71835 Oe au Id rr t le 0434 913 912 lt 1 An0X 19h s ATON i 90 9 UD JO i NATIN MN P 42612 044231 indino 43015 Ser PIX 061447 in 0 64 ELA QN9Y 061 A ada A 01018 101 3591
7. AD7192 evaluation board to your PC USB connector using the USB cable included in the evaluation kit The POWER LED on the evaluation board should turn on and Found new hardware wizard should start automatically on the PC 2 Follow the steps in the wizard until the installation is completed USING THE SOFTWARE Start the AD7190 AD7192 evaluation software on the PC Click on the Windows Start button then click Programs Analog Devices AD7190 AD7192 and finally AD7190 AD7192 evaluation software The software allows you to configure the AD7190 AD7192 gather samples and analyze the data Consult the AD7190 AD7192 data sheets for further information on the register bits and their functions Figure 6 shows the main window that is displayed when the program starts The Main Window section briefly describes the various menu and button options in the main window The data that has been read can be exported to other packages such as MathCAD or Microsoft Excel for further analysis P AD719x Evaluation Board Software 0088 07190 Delete Data Clear Graphs DATA Waveform Display Units _ V mV inv 1 00u 500n 0 00 OFF 1 00 X scale 1 52u T Fixed Ly 30 40 50 60 70 Sample Number X scale Samples ANALYSIS rogum After Sampling Analyse All Samples LT 100 45 1 00 500n 000 500n Samples Board Connected 8 62 4
8. You can use the ADC Setup window to determine the values to be written to the AD7190 AD7192 on chip registers for different configurations When you change the configuration for example the gain or channel the values in the Register HEX section are updated automatically You can manually alter the values in the Registers HEX section as well When the values in this section are altered the other sections of the ADC Setup window are updated so that you can easily see the impact of the register changes gt Evaluation Software xi 4D7190 setup read ERROR USB communication ERROR Details Ignore Figure 9 Configuration Tool 09551 009 Rev 0 Page 9 of 20 LOW NOISE QUICK TEST B Low Noise Quick Test Hardware Setup CANCEL The Low Noise Quick Test helps to setup the evaluation board and to demonstrate the ADC low noise performance you click the OK button the next screen will show you the recommended hardware setup We Low Quick Test Hardware Setup Please set up the evaluation board for the noise test As a starting point nsert link J1 inte position SV 0587 insert links J2 and J3 all positions n this setup the ADC analog power supply is SV voltage reference SV AIN1 and AIN2 are shorted together and biased to approximately 2 6V P Low Noise Quick Test ADC Setup This is the last step of the Low Noise Quick Test setup If you click the OK button now the ADC will automatica
9. as shown in Figure 5 A 6 wire load cell is shown but a 4 wire load cell can also be connected GND SHLD AVDD EXC REF1 4 AIN3 AINA REF1 PWR SW GND SHLD 09551 005 Figure 5 Load Cell Connection to Header J4 The AD7190 AD7192 are configured for an output data rate of 4 69 Hz The gain is programmed to 128 Channel AIN3 AINA is selected as the active channel with REFIN1 REFINI selected as the reference source The conversions from the AD7190 AD7192 are displayed on the LCD display The four buttons beneath the LCD display allow the user to calibrate the weigh scale system adjust the LCD contrast and display the results in code or weight The function of each button is listed at the bottom of the LCD display To operate the weigh scale demonstration connect the load cell to Header J4 as shown in Figure 5 Apply power to the AD7190 AD7192 evaluation board using either a 9 V battery or a 9 V dc power source Ensure that Link J1 is in Position 5 V BAT EXT The weigh scale demonstration can also be powered from the USB connector if the board is connected to a PC Link J1 should be in Position 5 V USB in this case With no weight on the weigh scale an offset calibration should be performed selectable from the buttons below the LCD display The expected full scale weight should then be placed on the load cell and the full scale calibration performed The user should select the corresponding full scale weight on t
10. from the AD7190 AD7192 DATA Display Units This allows you to display the conversions in hexadecimal decimal volts or in user specified units If the conversions are displayed in volts the value of the reference voltage must be entered in the Vref box Autoscale This allows you to enable or disable the autoscale function on the waveform plot X scale This allows you to have a fixed x axis or a dynamic x axis When the x axis is fixed the number of samples to display is entered in the X Scale Samples box ANALYSIS Channel The data channel to be analyzed is selected using this button After Sampling The software can process the conversions as they are being gathered or it can process the samples when the ADC has completed the selected number of conversions Analyse Samples This feature allows you to fix the sample size used for analyzing Alternatively the software can process all samples gathered When the Analyse Last Samples option is selected the sample size must be entered in the Last Samples box The software captures all samples generated by the AD7190 AD7192 If the software fails to gather all samples then the message shown in Figure 7 appears Software missed some of the ADC samples Click to clear right click for details Figure 7 Error Message When Samples Not Captured 09551 007 The software may drop samples for the following reasons e The data is being analyzed in parallel with
11. the data to calculate the maximum conversion minimum conversion and average conversion The rms noise peak to peak noise and resolution are also calculated Rev 0 Page 10 of 20 09551 010 WEIGHSCALE DEMO We Weighwt Dems Hardware Setup Piease connect your Weigh Scale Demo ADC Setup as detailed on the The loadcell negativ If the loadcell has a 4 Connect 6 wire conn Analog Input AIN3 AIN4 Gain 128 on chip buffer ON Bipolar operation Chop disabled Voltage reference input REF1 Continuous conversion First filter notch 10 Hz Internal on chip clock BPDSW ON CANCEL un If you click the OK button now the ADC will automatically be setup as follows The software will be set for continuous sampling and continuous analysis of last 20 samples You can modify any software settings or ADC setup any time afterwards As the last step please setup and calibrate user units to see the results in grams Click on User Units Setup button in the main software window 09551 011 Figure 11 Weigh Scale Demo A load cell can be connected directly to the AD7190 AD7192 evaluation board When the WeighScale Demo button in the main window see Figure 6 is clicked you are guided through a series of windows that give information on connecting the load cell to the AD7190 AD7192 evaluation board The AD7190 AD7192 device is automatically configured to have a gain of 128 Channel
12. the gathering of samples You should delay the analysis until the samples are gathered e Other programs are running on the PC e The is too slow Rev 0 Page 7 of 20 Evaluation Board User Guide ADC SETUP 71 Channel Selection FS bits First Notch Hz ONES 0 Status 40 ER 09 d ___50 x a 1 Mode 080060 x Ain 3 Ain 4 60Hz Rejection Filter Type B R F x SIN EZ 2 Confi 0117 x Temp Sensor dasti orr Y I SINC4 7 j 00 Ain2 Ain2 Buffer Zero Latency 3 Data FFFFFF BUF ON e Aini AiCom c 4 ChiplD 84 opping x Ap 5 GpoCon 00 LER Diagnostic Glock Configuration 9 Offset 800000 x Ain 4 Aincom F 7 FullScale 553060 Ref Selection P4 Disable Disable Power Switch 09551 008 Figure 8 ADC Setup Window The ADC Setup window gives you access to the AD7190 AD7192 registers You can write to the registers and read from the registers This window operates even when an AD7190 AD7192 evaluation board is not connected to the software It operates as an AD7190 AD7192 configuration tool ADC Reset The ADC is reset to its default condition using this button ADC Read Click this button to read the values of the registers on the AD7190 AD7192 The ADC Setup window displays the hexadecimal values returned from the AD7190 AD7192 The other sections of the ADC Setup window are a
13. 09909099 Sl 99192 ma NAISA cares BERRET FE oe QI Wie ac asn 9 Z Bil Sivas 2 35i ACE 97 ACT zen AUT u ady bnqep 39V J831NI 8SN YATIOYLNOOD 951 10128uu02 J 01 gsn MS WO34d33 SVHINOO 991 azz va doup samo 104 ipesn si 346114909 21 AG 097 20 230410495 E 255 Zey 49 astaan A6 4497409 912 198 Di 3 lSNI GND eulpyrv 3915100 A6 19 anal Ag 9 amd 4ngi anya 9 383 ano anc A 153 S iM 255 veo ABTIVE icq T 10012 4 2 I6 TWNH31X3 IT WS ver A6 1X3 AGE 40 2410 i AG ASN Sexpu epolp DJjxe UL 5 9399105 Od A6 10948 AD S oin PPAG ALS EVAL AD7190EBZ EVAL AD7192EBZ Schematic Digital Figure 14 Rev 0 Page 14 of 20 09551 013 E te Es w3 J51 ae eae 8888 O 051 R74 LI mr sgg 15 5 28 8 5 7 Ep L 2053 us 5 J el lo 9 57 v2 al Tg C50 52 cJ S RA En suus 3 S s GS R30 R53 52 C5
14. 2 5 C30 L1 R1 R2 R5 R3 R4 R8 R20 to R25 R6 R7 R52 to R54 R9 to R15 R19 R50 R51 R16 R17 R75 R76 R18 R55 to R57 R62 to R73 R31 R32 R74 5110 S5 B1 J1 J2 J3 J5 to JO J10 J31 J51 J52 U53 N A ADR421 reference 5 V voltage regulator 3 3 V voltage regulator 10 64 step digital potentiometer USB controller 64K PC EEPROM LCD connector LED red high intensity gt 90 mCd 0603 LED green high intensity gt 50 mCd 0603 4 9152 MHz crystal 24 MHz crystal Diode Diode N MOSFET Capacitor ceramic 12 pF ceramic capacitor 0 01 ceramic capacitor 0 1 uF ceramic capacitor 1 ceramic capacitor 4 7 ceramic capacitor 10 pF tantalum capacitor Ferrite bead 0 resistor 100 resistor 1 kO resistor 10 kO resistor 1 5 O resistor Resistor 100 resistor 10 O resistor 47 resistor Switch Clip for 9 V battery 2 x 4 way header 2 x 8 way header 1 x 8 way header Connector 50 O straight SMB Screw terminal block Connector power jack barrel 2 1 mm SMD Connector USB Mini B SMD Header LCD module 2x16 character count 1x 16 pin top LCD header Analog Devices Analog Devices Analog Devices Analog Devices Cypress Semiconductor Microchip Technology Inc FCI Avago Technology Avago Technology Not inserted AVX On Semiconductor Philips Infineon Not inserted Phycomp Phycomp Phycomp Phycomp Phycomp AVX Tyco
15. 6 R63 R68 R67 R66 R76 vso R52 RST u32 4 C58 U51 C59 nz OS a et NTERFACE BERE I R63 AME 4 ie El fel enl gt 5555 m SAMPLE2 SAMPLEI si 2 53 s4 RESET e 80 AGND Yi 8 5R 88 M 8582 5 x E m P3 LED3 RS hy AGND P2 s ww c18 c20 CPs 07190 PSW REF2 LED2 AGND REFI PSW Ee m y at Ea pert MCI m L 1 13 om Ui E Jen REF 1 AIN3 R5 Coen RI m ang ES AINCOM C5 C10 E Eos AVDD AVDD T c Cee ANZ werd AGND 250 mE J ZEZ2S558 i AVDD p e AGND ROM 19 8 VOLTAGE rer Figure 16 EVAL AD7190EBZ EVAL AD7192EBZ Silkscreen Rev 0 Page 15 of 20 09551 014 Figure 17 EVAL AD7190EBZ EVAL AD7192EBZ Solder Side View Rev 0 Page 16 of 20 ORDERING INFORMATION BILL OF MATERIALS Table 2 Reference Designator Description Manufacturer Order No U1 AD7190 AD7192 Analog Devices AD7190BRUZ AD7192BRUZ KR AOU gt o 02 031 032 050 051 052 053 LED1 to LED3 LED51 LED4 to LED8 XTAL1 XTAL51 D1 D31 to D34 Q51 C1 to C7 C15 C16 C52 C53 C8 C10 C11 C13 C19 to C24 C31 to C33 C54 to C61 C9 C12 C14 C34 to C37 C50 C51 C17 C18 C
16. 90 AD7192 can be powered using a 9 V battery B1 or using an external 9 V dc source connected at J31 The 9 V is regulated down to 5 V using the on board ADP3303 5 a high precision low power 5 V output regulator Using Link J1 this Table 1 Socket Functions regulated 5 V can be used as the supply to the AD7190 AD7192 To use this option Link J1 should be placed in Position 5 V BAT An external power supply can be applied via J10 Link J1 should be placed in Position EXT Standalone Operation The AD7190 AD7192 evaluation board can be powered using a 9 V battery B1 or using an external 9 V dc source connected at J31 The 9 V is regulated down to 5 V using the on board ADP3303 5 a high precision low power 5 V output regulator Using Link this regulated 5 V can be used as the supply to the AD7190 AD7192 To use this option Link J1 should be placed in Position 5 V BAT An external power supply can be applied via J10 Link J1 should be placed in Position EXT SOCKETS There are five sockets relevant to the operation of the AD7190 AD7192 on this evaluation board The functions of these sockets are outlined in Table 1 Socket Description REF24 Subminiature SMB connector This socket is used in conjunction with REFIN2 to apply an external reference to the AD7190 AD7192 The voltage for the REFIN2 input of the AD7190 AD7192 is applied to this socket REF2 Subminiature SMB connector This
17. AIN3 AIN4 is selected and the output data rate is programmed to 10 Hz When the instructions given in each window are completed click OK The AD7190 AD7192 evaluation board gathers samples continuously and uses batches of 20 samples to analyze the data The software displays the maximum voltage measured the average voltage the minimum voltage the rms noise and resolution The sample size used to process the data can be altered using the Last Samples box Rev 0 Page 11 of 20 USER UNITS SETUP a Tools Window Help To customize this software for your application you can setup a linear transfer function between the ADC output code and the display result user units of your choice After software start the default user units are pre set as 100 for ADC operating in bipolar mode WeighScale demo function pre sets the user units approximately for load cell with sensitivity V kg The easiest way to setup the user units is to perform a calibration as follows Connect your hardware setup ADC let software sampling and get back here Menu gt Setup gt User Units Select correct channel to which the sensor is connected Set your sensor to 0 condition for example 0 kg weight and click the Calibrate Offset button Set your sensor to another defined condition for example 1 kg weight fill out the Gain Cal Target value and click Calibrate Gain button Modify the Unit Name Gain Cal Targe
18. ANALOG DEVICES UG 222 Evaluation Board User Guide One Technology Way 9106 Norwood MA 02062 9106 U S A Tel 781 329 4700 Fax 781 461 3113 www analog com Evaluation Board for the AD7190 AD7192 4 8 kHz Ultralow Noise 24 Bit Sigma Delta ADCs FEATURES Full featured evaluation board for the AD7190 AD7192 Standalone interface using microcontroller and LCD display PC software for control of AD7190 AD7192 using USB interface Various linking options INTRODUCTION This user guide describes the evaluation board for the AD7190 AD7192 which are 4 8 kHz ultralow noise 24 bit sigma delta Z A ADCs The AD7190 AD7192 are complete analog front ends for low frequency measurement applications The parts contain two differential inputs four pseudo differential inputs and include a low noise instrumentation amplifier reference detect and a low side power switch Full data on the AD7190 AD7192 is available in the AD7190 and AD7192 data sheets available from Analog Devices Inc and should be consulted in conjunction with this user guide when using the evaluation board NOISE TEST CIRCUITRY ANALOG AD7190 INPUTS AD7192 VOLTAGE REFERENCE GENERAL DESCRIPTION The AD7190 AD7192 evaluation kit is a powerful tool for exploring and evaluating the AD7190 AD7192 features The evaluation board can be operated in complete standalone battery powered mode The LCD display is used to display the
19. SOLUTE REFERENCE An ADR421 is included on the AD7190 AD7192 evaluation board so that the part can also be evaluated using an absolute reference The reference can be connected to the REFIN2 and REFIN2 pins of the AD7190 AD7192 by connecting the links of Header J3 as shown in Figure 4 S uds a asg2Zicu gt 222 aaaarc Figure 4 Connecting an Absolute Reference to the AD7190 AD7192 CONNECTING THE AD7190 AD7192 TO AN EXTERNAL MICROCONTROLLER The AD7190 AD7192 evaluation board can be connected to an external microcontroller using Header J2 With all links in place the AD7190 AD7192 are connected to the on board microcontroller However with these links removed the AD7190 AD7192 are disconnected from the evaluation board microcontroller The user can then use a header to interface the AD7190 AD7192 to the external microcontroller 09551 004 Rev 0 Page 4 of 20 USING THE AD7190 AD7192 EVALUATION BOARD IN STANDALONE MODE The AD7190 AD7192 evaluation board can be operated in standalone mode In this mode the evaluation board functions as a weigh scale demonstration Channel AIN3 AIN4 is the analog input channel with REFIN1 REFIN1 as the refer ence source These analog input pins and reference pins are connected to the J4 header along with AVDD and GND This header allows the user to connect a load cell to the AD7190 AD7192 The load cell should be connected to the header
20. device Charged devices and circuit boards can discharge without detection Although this product features patented or proprietary protection Alas circuitry damage may occur on devices subjected to high energy ESD Therefore proper ESD precautions should be taken to avoid performance degradation or loss of functionality Legal Terms and Conditions By using the evaluation board discussed herein together with any tools components documentation or support materials the Evaluation Board you are agreeing to be bound by the terms and conditions set forth below Agreement unless you have purchased the Evaluation Board in which case the Analog Devices Standard Terms and Conditions of Sale shall govern Do not use the Evaluation Board until you have read and agreed to the Agreement Your use of the Evaluation Board shall signify your acceptance of the Agreement This Agreement is made by and between you Customer and Analog Devices Inc ADI with its principal place of business at One Technology Way Norwood 02062 USA Subject to the terms and conditions of the Agreement ADI hereby grants to Customer a free limited personal temporary non exclusive non sublicensable non transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above and agrees not to use the Evaluation Board for any oth
21. eement at any time upon giving written notice to Customer Customer agrees to return to ADI the Evaluation Board at that time LIMITATION OF LIABILITY THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED AS IS AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS ENDORSEMENTS GUARANTEES OR WARRANTIES EXPRESS OR IMPLIED RELATED TO THE EVALUATION BOARD INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTY OF MERCHANTABILITY TITLE FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER S POSSESSION OR USE OF THE EVALUATION BOARD INCLUDING BUT NOT LIMITED TO LOST PROFITS DELAY COSTS LABOR COSTS OR LOSS OF GOODWILL ADI S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE HUNDRED US DOLLARS 100 00 EXPORT Customer agrees that it will not directly or indirectly export the Evaluation Board to another country and that it will comply with all applicable United States federal laws and regulations relating to exports GOVERNING LAW This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts excluding conflict of law rules Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suff
22. er purpose Furthermore the license granted is expressly made subject to the following additional limitations Customer shall not i rent lease display sell transfer assign sublicense or distribute the Evaluation Board and ii permit any Third Party to access the Evaluation Board As used herein the term Third Party includes any entity other than ADI Customer their employees affiliates and in house consultants The Evaluation Board is NOT sold to Customer all rights not expressly granted herein including ownership of the Evaluation Board are reserved by ADI CONFIDENTIALITY This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board including but not limited to soldering or any other activity that affects the material content of the Evaluation Board Modifications to the Evaluation Board must comply with applicable law including but not limited to the RoHS Directive TERMINATION ADI may terminate this Agr
23. he LCD display as the weigh scale demonstration supports full scale weights of 500 g to 10 kg The software then continuously reads conversions from the AD7190 AD7192 scales the conver sions appropriately and displays the resulting weight on the LCD display Rev 0 Page 5 of 20 USING THE AD7190 AD7192 EVALUATION BOARD WITH THE PC SOFTWARE SOFTWARE INSTALLATION The AD7190 AD7192 evaluation board software should be installed before connecting the AD7190 AD7192 evaluation board to the PC EVALUATION SOFTWARE INSTALLATION To install the evaluation software perform the following steps l Insertthe AD7190 AD7192 evaluation kit CD in the CD ROM drive of your PC The Evaluation software installation wizard should start automatically after inserting the CD If the wizard does not start navigate to the AD7190 AD7192 evaluation kit CD on your PC and start Setup exe 2 Atthe prompt select a destination directory which is C Program Files Analog Devices AD7190 AD7192 by default After the directory is selected the installation procedure copies the files into the relevant directories on the hard drive The installation program creates a program group called Analog Devices with the subgroup AD7190 AD7192 in the Start menu of the taskbar 3 When the installation procedure is complete double click the AD7190 AD7192 icon to start the program EVALUATION BOARD INSTALLATION To install the evaluation board 1 Connect the AD7190
24. lly be setup as follows Analog Input AIN1 AIN2 Gain 128 on chip buffer ON Bipolar operation Chop disabled Voltage reference input REF2 P1 P2 Continuous conversion First filter notch 4 7 Hz Internal on chip clock The software will then read 100 samples from the ADC and perform noise analysis After that you can modify any software settings or ADC setup and or repeat the sampling and analysis For further improvement of the evaluation system noise performance you can try to use a power supply less noisy than the 5V derived from PC s USB For example connect a 9V battery to the contacts on board change the link J1 SELECT AVDD to position 5V and repeat the noise test Figure 10 Low Noise Quick Test When the Low Noise Quick Test button in the main window see Figure 6 is clicked you can quickly and easily measure the rms noise ofthe AD7190 AD7192 The software configures the AD7190 AD7192 to have a gain of 128 and an output data rate of 4 7 Hz Channel AIN1 AING is selected and the reference voltage is set to 5 V The software assumes that the 5 V from the USB is used as the reference to the AD7190 AD7192 The software also provides instructions on the link positions for the AD7190 AD7192 evaluation board When the instructions given in each window are completed click the OK button The AD7190 AD7192 software gathers 100 samples displays the results in the waveform and analyzes
25. lso updated to reflect the AD7190 AD7192 configuration ADC Write Click this button to write the information displayed in the Registers HEX window to the AD7190 AD7192 Analog Inputs Select the analog input channels using the Channel Selection buttons The gain polarity and chopping can also be selected The analog inputs can be buffered or unbuffered using the Buffer button Finally the Diagnostic button enables disables the burnout currents Digital Filter The output data rate first filter notch the order of the sinc filter zero latency and enabling disabling the REJ60 bit are programmed using these buttons You can enter the frequency of the first filter notch and the software calculates the value to be written to Bits FS 9 0 of the mode register Alternatively you can enter the FS 9 0 value in decimal and the software calculates the first filter notch The value to be written to the AD7190 AD7192 is displayed in the Registers HEX section Voltage Reference The reference source and reference value are programmed in this section You can select REFIN1 or REFIN2 enable or disable the reference detect function and set the voltage of the reference When the reference setup is changed the changes to the configuration register are shown in the Registers HEX section Clock Configuration The clock to be used by the AD7190 AD7192 is selected in this section When an external master clock is selected the clock freq
26. olk County Massachusetts and Customer hereby submits to the personal jurisdiction and venue of such courts The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed 2010 Analog Devices Inc All rights reserved Trademarks and ANALOG registered trademarks are the property of their respective owners UG09551 0 12 10 0 DEVICES www analog com Rev 0 Page 20 of 20
27. socket is used in conjunction with REFIN2 to apply an external reference to the AD7190 AD7192 The voltage for the REFIN2 input of the AD7190 AD7192 is applied to this socket AIN1 Subminiature BNC SMB connector This socket is used to apply an analog input signal to AIN1 AIN2 Subminiature BNC SMB connector This socket is used to apply an analog input signal to AIN2 MCLK Subminiature BNC SMB connector An external clock source can be applied to the AD7190 AD7192 using this socket Rev 0 Page 3 of 20 NOISE TEST Header J3 allows the user to perform noise testing of the AD7190 AD7192 With all links in the vertical position see Figure 2 the analog and reference are applied to the AD7190 AD7192 as shown in Figure 3 AINCOM AGND REF2 tc 99999999 Figure 2 Link Positions for Noise Testing AVDD AIN1 AIN2 REF2 09551 002 AVpp AVpp REFIN2 AD7190 AD7192 REFIN2 09551 003 Figure 3 Noise Test Connections As shown in Figure 3 inserting the links in Header J3 connects a resistor network to the AD7190 AD7192 The reference to the ADC is provided by The resistor divider generates a bias voltage of approximately 2 Channel AIN1 and Channel AIN2 are connected to this voltage Therefore conver sions can now be performed using this external short to measure the rms noise peak to peak noise and peak to peak resolution USING AN AB
28. t Unit Channel Ain3 AinA Calibrate Offset Calibrate Gain E 77g J 1000 While the software is sampling you can check the result instantly Latest ADC Data Latest User Result 8431382 gt 0 023 9 Alternatively you can customize user units by changing the User Offset and User Gain Their meanings can be seen from the equation below User Offset User Gain Unit Name 1 2431405 0 001 ld 09551 012 Figure 12 User Units Setup Window The User Units Setup window which is accessed by clicking the offset and gain error of the system can also be calibrated You User Units Setup button in the main window see Figure 6 can perform a system offset and system full scale calibration allows you to define the display units for the conversions For The resulting coefficients are held in memory they are not example if a load cell is connected to the AD7190 AD7192 written to the ADC calibration registers the conversions from the ADC can be displayed in grams The Rev 0 Page 12 of 20 EVALUATION BOARD SCHEMATICS AND ARTWORK 2 pay g C031 usd 1 5 4 adw MSd 3 amoral erl MSd A ONG T TR 71 9 8 anay 435 8r si t TENY b 0 Sem 1338 2 3 Gav c 51 9490 G1HS QND 1 gt 013 YOSNAS NOILO3NNO2 QNnO39 x x TN NAA aly XOL XOL
29. uency must be entered in the MHz box Digital Outputs The four digital outputs PO to P3 are programmed and enabled disabled in this section The low side power switch is also controlled in this section using the Power Switch button Mode of Operation This button allows you to select various modes of operation including continuous conversion single cycle conversion and calibration Rev 0 Page 8 of 20 Output Data Format This section allows you to select the output format of the data conversions and to enable the parity When several analog inputs are enabled the Data Status option should be selected under Data Only Registers HEX This window displays the values to be written to the AD7190 AD7192 registers When features such as the analog input chan nel gain and mode of operation are changed the values in the Register HEX section are updated automatically You can write directly to the Registers HEX section altering the contents of any register When the values in this section are altered the other sections of the ADC Setup window are updated to reflect the changes CONFIGURATION ASSIST TOOL The AD7190 AD7192 evaluation software can be used as a configuration assist tool even when an AD7190 AD7192 evaluation board is not connected When the AD7190 AD7192 evaluation board software is open click the ADC Setup button The message shown in Figure 9 appears Click the Ignore button The ADC Setup window opens
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