Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
View All Product from Texas InstrumentsThis EVM provides access to the features and measures the performance of the INA851. By default, theINA851EVM instrumentation amplifier is configured to a gain of 1 V/V. The evaluation board provides optionalfootprints for gain resistors RG1 and RG2 to modify the input-stage instrumentation-amplifier gain. Optionalfootprints R5 and R9 can be populated with 0-Ω jumpers to set the output stage gain to 0.2 V/V.The INA851 incorporates features that simplify interfacing to a fully-differential ADC. The VOCM connectorsets the output common-mode voltage. If the VOCM connector is not driven, the output common-mode voltagedefaults to the INA851 midsupply value. Clamp pins are provided to limit the INA851 output voltage level,which can be applied to the ADC inputs. The output clamp pins, VCLAMP+ and VCLAMP–, are accessibleusing connector J9. Selectable jumpers J11 and J12 set the output clamp voltage level to the INA851 supplies(default), or to external voltages using connector J9.Revision A of the INA851EVM allows access to the FDA_IN– and FDA_IN+ pins with optional capacitors C7and C18. These capacitors are in parallel with the INA851 output stage internal feedback resistors to implementnoise filtering. A simplified block diagram of the INA851EVM is displayed in Figure 2-1. For a full schematic ofthe INA851EVM, see Figure 7-1.U1 INA851RGT+3 k�+–3 k�+– +5 k�5 k�5 k�1.25 k�5 k�1.25 k�OutputClampD136 VSMAConnectorJ6J3SMAConnectorIN–RG–IN+RG+VS+VS–VCLAMP–VCLAMP+G02+G02–OUT+OUT–FDA_IN–FDA_IN+VCCVEEIN+IN–R11 100 �R2 100 �C12C9C15100 pF10pF10pFR5R10 100C13100 pFRG1 DNPJ5.4J5.1J5.3J5.2OutputConnectorOUT+OUT–DNPR9 DNPDNPDNPC7C18VCCC17100 nFVEEVCLAMP+VCLAMP–100 nFVclamp+_ext123100 nFVclamp-_extJ9.1J9.2J9.4J9.3VCCVCLAMP+J11123VEEVCLAMP–J12C6100 nFC19C20VOCMVCCVEEVCCVEEVclampConnectorJ10.1J10.2VCCVEER1VOCMConnectorOutputClampD2D3123J7123J4C5100 nFR4 100J1.1J1.2J1.3Power SupplyConnectorVCCVEEC110 µFC310 µFC2100 nFC4100 nF––100R1810 kR1910 kFDA_IN–FDA_IN–FDA_IN+FDA_IN+Figure 2-1. INA851EVM Simplified SchematicEVM Circuit Descriptionwww.ti.com4INA851 Evaluation ModuleSBOU273A – FEBRUARY 2022 – REVISED NOVEMBER 2022Submit Document FeedbackCopyright © 2022 Texas Instruments Incorporated
TYPE | DESCRIPTION | Select all |
---|---|---|
Voltage - Supply, Single/Dual (±) | 8V ~ 36V | |
Series | - | |
Board Type | Fully Populated | |
Package | Box | |
Supplied Contents | Board(s) | |
Product Status | Active | |
Utilized IC / Part | INA851 | |
Channels per IC | 1 - Single | |
Amplifier Type | Instrumentation | |
Output Type | Differential | |
Slew Rate | 37V/µs | |
-3db Bandwidth | 22 MHz | |
Current - Output / Channel | 37 mA | |
Current - Supply (Main IC) | 6 mA |
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
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