5B38 Analog Devices Inc
Contents
1. 9B38 Sensitivity Output Range 3 mV V 5 Vto 5 V 3 mV V 5 Vto 5 V 2 mV V 5 Vto 5 V i 5 V to 5 V Model 5B38 Half Bridge 30 mV 3 mV V Sensitivity 0 08 Span 1 mV RTI 5 V 1 mV 15 ppm C 2 uV rms 250 VV Hz Bandwidth 3 dB Output Rise Time 10 to 90 Span Output Settling Time to 0 1 Input to Output Continuous Output to Power Continuous Transient 1 KQ Source Imbalance 50 60 Hz Normal Mode Rejection 50 60 Hz Continuous Transient Output Resistance Voltage Output Protection Output Selection Time Max Logic 0 Min Logic 1 Max Logic 1 Input Current 0 Power Supply Voltage Power Supply Current Power Supply Sensitivity Mechanical Dimensions Rated Performance Operating Storage Relative Humidity RFI Susceptibility Same as full bridge version 10 kHz 40 us 250 us Common Mode Voltage CMV 1500 V rms maximum 3 V maximum ANSI IEEE C37 90 1 1989 Common Mode Rejection CMR 100 dB 3 dB 10 kHz Input Protection Signal and Excitation Voltage 240 V rms maximum ANSI IEEE C37 90 1 1989 50 Q Continuous Short to Ground 6 us Cioaa 0 to 2 000 pF Output Enable Control 1V 2 5V 36 V 0 4 mA 5 V 4590 200 mA Full Load 120 mA No Load 25 ppm reading 2 5uV RTI 2 275 x 2 375 x 0 595 57 8 mm x 59 1 mm x 15 1 mm Environmental Temperature Range 25 C to 85 C 40 C to 85 C 40 C to 85 C 0 to 93 40 C non2. 3 EXCITATION 4 EXCITATJON 5 iNPUT LO 6 INPUT Hi 16 POWER COM 17 5vDc 18 V 5839 ONLY 19 vo com 20 Vour EXCEPT 5839 21 RESERVED 22 READ ENABLE 0 23 WRITE ENABLE 0 BOTTOM VIEW Figure 4 Model 5B Series Module with pin out assignments Rev 0 Page 5 of 8 WARNING WA ESD SENSITIVE DEVICE 9B38 OUTLINE DIMENSIONS ho ee ee ee 0518 a TOP 129 do D 89 1 ii Tn eT G BOTTOM a TERA Figure 5 Outline Dimensions Rev 0 Page 6 of 8 9B38 NOTES Rev 0 Page 7 of 8 9B38 NOTES 2004 Analog Devices Inc All rights reserved Trademarks and ANALOG registered trademarks are the property of their respective companies www ana l 0 g com moreno Leal DEVICES Rev 0 Page 8 of 8
3. times the enable input should be grounded to power common as it is on the 5B01 and 5B08 backplanes Me ay DATE CODE 9748 0038 TAGES eens Rev 0 Page 2 of 8 5B38 Models Available Model Input Bridge Type 5B38 02 Full Bridge 5B38 04 Half Bridge 5B38 05 Full Bridge 5B38 Custom F Bridge Range Excitation 300 Qto 10 kQ 10 0 V 300 Qto 10 kQ 10 0 V 300 Qto 10 KQ 10 0 V 300 Qto 10 kQ 10 0 V Custom Input sensitivity ranges are available Refer to configuration guide 5B38 Specifications Description Standard Ranges Custom Ranges Output Ranges Ri gt 50 RO Initial 25 C Nonlinearity Input Offset vs Temperature Output Offset vs Temperature Gain vs Temperature Excitation Voltage Output full load Load Range Load Regulation vs Temperature Half Bridge Voltage Level Half Bridge Voltage vs Temperature Input Bias Current Power On Power Off Overload Input 0 1 Hz to 10 Hz Bandwidth Input 10 kHz Bandwidth Output 100 kHz Bandwidth Model 5B38 Full Bridge Input Ranges 20 mV 2 mV V Sensitivity 30 mV 3 mV V Sensitivity 10 mV to 500 mV 5 V to 5 V Accuracy 0 08 Span 10 uV RTI 0 02 Span 1 uVPC 440 uV C 25 ppm of Reading C 10 V 3 mV 10 KQ minimum 300 Q maximum 5 ppm mA 15 ppm C N A N A 3 nA Input Resistance 20 MQ minimum 40 kQ minimum 40 kQ minimum Noise 0 4 uV rms 70 VV Hz 10 mV peak peak Rev 0 Page 3 of 8
4. ANALOG DEVICES FEATURES Wide bandwidth Single Channel Signal Conditioning Interfaces Amplifies and Filters signals from full bridge and half bridge strain gage transduces between 3000 and 10kQ Isolated Precision Output of 5V to 5V 10 kHz bandwidth of the 5B38 ideally suits to measure signals that vary rapidly with time Module circuitry can withstand 240v rms at the input screw terminals All 5B38 series modules are mix and match and Hot Swappable APPLICATIONS Industrial signal conditioning Industrial signal isolation Industrial signal filtering PRODUCT OVERVIEW The 5B Series represents an innovative generation of low cost high performance plug in signal conditioners Designed for industrial applications these modules incorporate highly reliable transformer based isolation and automated surface mount manufacturing technology They are compact economical components whose performance exceeds that available from more expensive devices Combining 1500 V rms continuous isolation 0 05 calibrated accuracy small size and low cost the 5B Series is an attractive alternative to expensive signal conditioners and in house designs All modules are potted and identical in pin out and size 2 27 x 2 32 x 0 595 They can be mixed and matched permitting users to address their exact needs and may be hot swapped without disturbing field wiring or power The isolated input modules provide 0 to 5V or 5V outputs a
5. Figure 1 5B38 Functional Block Diagram There are also a number of backplanes and mounting sockets which provide a complete signal conditioning solution for end users Each backplane incorporates screw terminals for field wiring inputs and outputs and cold junction sensors for thermocouple applications These signal conditioners are designed to provide an easy and convenient solution to signal conditioning problems of both designers and end users in measurement and control applications Typical uses include microcomputer based measurement systems standard data acquisition systems programmable controllers analog recorders and dedicated control systems The 5 B series modules are ideally suited to applications where monitoring and control of temperature pressure flow rotation and other analog signals are required The 5B Series modules and backplanes are approved by Factory Mutual FM and the 5B Series modules are approved by the Canadian Standards Association CSA for use in Class 1 Division 2 Groups A B C and D locations These approvals certify that the 5B Series is suitable for use in locations where a hazardous concentration of flammable gas may exist only under fault conditions of operation Equipment of this category is called non incendive and they need no special enclosures or other physical safeguards The 5B series modules and backplanes have been tested and passed the stringent heavy industrial requirements of the Eur
6. condensing 0 5 Span error 400 MHz 5 Watt 3 ft 1 Includes the combined effects of repeatability hysteresis and nonlinearity Loads heavier than 50 kQ will degrade nonlinearity and gain temperature coefficient The output common must be kept within 3 V of power common Specifications subject to change without notice Rev 0 Page 4 of 8 9B38 PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS EXC Lo HI Exc EXC ei ris el AE EXC HI Exc FULL BRIDGE STRAIN GAGE HALF BRIDGE STRAIN GAGE USER SUPPLIED QUARTER BRIDGE STRAIN GAGE Figure 3 5B38 Input Field Connections Table 1 Pin Function Descriptions Pin No Description 1 EXC 2 LO 3 HI 4 EXC ESD CAUTION ESD electrostatic discharge sensitive device Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection Although this product features proprietary ESD protection circuitry permanent damage may occur on devices subjected to high energy electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance degradation or loss of functionality 0 150 3 8 0 385 9 8 0 525 12 9 2 275 57 8 MAX 0 275 6 7 0 475 11 6 0 375 9 5 SOCKET 0 038 PIN 4 0 595 gt 15 1 MAX TOP VIEW 9B38 Qi SENSOR 2 SENSOR
7. nd accept J K T E R S N or B type thermocouples These modules feature complete signal conditioning functions including 240 V rms input protection filtering chopper stabilized low drift 1 uV oC amplification 1500 V rms isolation and sensor excitation when required All modules feature excellent common mode rejection and meet industrial transient surge withstand specifications Rev 0 Information furnished by Analog Devices is believed to be accurate and reliable However no responsibility is assumed by Analog Devices for its use nor for any infringements of patents or other rights of third parties that may result from its use Specifications subject to change without notice No license is granted by implication or otherwise under any patent or patent rights of Analog Devices Trademarks and registered trademarks are the property of their respective companies Isolated Wide Bandwidth Strain Gage Input 9B38 FUNCTIONAL BLOCR DIAGRAM T ANTI ALIASING I a SIGNAL y ISOLATION acnve Ps LPF o 20 Vout 3 POLE PROT ee 1 ii ino pl 8 Counon PROTECTED l EXCITATION i SOURCE i I 2 lt H Hi ren READ ENABLE Ls J mw OWE ISOLATION i x Es Drs voc ge a TER 3 oe POWER i a VS COMMON L ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION BARRIER NC NO CONNECTION
8. opean Union s electromagnetic compatibility ENC directive EN50082 1 and EN50081 2 When used according to installation directions refer to 5B series User Manual any errors caused by EMI RFI interference will be less than 0 1 of the full scale 5B measurement range for field strengths up to 10 V M and frequencies up to 1 GHz One Technology Way P O Box 9106 Norwood MA 02062 9106 U S A Tel 781 329 4700 www analog com Fax 781 326 8703 2004 Analog Devices Inc All rights reserved GENERAL DESCRIPTION The 5B38 is a wide bandwidth single channel signal conditioning module that interfaces amplifies and filters signals from full bridge and half bridge strain gage transducers between 300Q and 10kQ The module provides an isolated bridge excitation of 10V and a protected isolated precision output of 5V to 5V The 10 kHz bandwidth of the module ideally suits to measure signals that vary rapidly with time such as strain on an automobile chassis during a crash test The 5B38 protects the computer side from damage due to field side over voltage faults The module withstands 240V rms at its input terminals without damage thereby shielding computer side circuitry from field side over voltage conditions In addition the 5B38 is mix and match and hot swappable with all 5B Series modules so can be inserted or removed from any socket in the same backplane without disrupting system power The 5B38 04 contains bridge completion ci
9. rcuitry so can function with half bridge strain gages For quarter bridge requirements the user must complete the bridge input to the half bridge level externally The factory can configure the module for a wide range of input ranges sensitivities A signle pole anti aliasing filter resides at each modules input A three pole low pass filter in the output stage sets the MODEL 5838 02 TYPE SOL FULL BRIDGE INPUT 40 0V EXC INN INPUT OUTPUT 9B38 bandwidth and yields optimal noise performance for accurate measurement of small signals in high electrical noise A chopper stabilized input amplifier provides low drift and stable gain Signal isolation by transformer coupling uses a proprietary modulation technique for linear stable and reliable performance The differential input circuit on the field side is fully floating eliminating the need for any input grounding A demodulator on the computer side of the signal transformer recovers the original signal which is then filtered and buffered to provide a low noise low impedance output signal An additional benefit the output section acts as a third floating port eliminating possible problems from ground loops and power supply noise The output common must be kept within 3V of power common A series output switch eliminates the need for external multiplexing in many applications The switch is turned on by an active low enable input If the switch is to be on at all
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