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SBOU226 – February 2020

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Universal Instrumentation Amplifier Evaluation Module: Alternate Pinout

User's Guide

SBOU226 – February 2020

Universal Instrumentation Amplifier Evaluation Module:

Alternate Pinout

This user's guide describes the characteristics, operation, and use of the INAEVM-ALT-SO8, a universal
evaluation module (EVM) that is compatible with a variety of instrumentation amplifiers (INAs), specifically
those with the resistor gain pins at pins 2 and 3. This EVM is compatible with the SOIC-8 (D) package,
and is designed to evaluate the performance of the devices in both single-supply and dual-supply
configurations. This document includes the schematic, printed circuit board (PCB) layout, and BOM.
Throughout this document the terms evaluation board, evaluation module, and EVM are synonymous with
the universal INAEVM-ALT-SO8.

Summary of Contents for INAEVM-ALT-SO8

Page 1: ...e INAEVM ALT SO8 a universal evaluation module EVM that is compatible with a variety of instrumentation amplifiers INAs specifically those with the resistor gain pins at pins 2 and 3 This EVM is compa...

Page 2: ...nce 8 3 5 Miscellaneous 8 4 Schematic PCB Layout and Bill of Materials 9 4 1 Schematic 9 4 2 PCB Layout 11 4 3 Bill of Materials 12 List of Figures 1 Universal INAEVM ALT SO8 Pinout 3 2 Dual Supply Co...

Page 3: ...e instrumentation amplifiers with the pinout shown in Figure 1 The EVM provide the following features Intuitive evaluation with the silkscreen schematic Easy access to nodes with surface mount test po...

Page 4: ...example of how to set up the EVM for dual supply operation Figure 2 Dual Supply Configuration 1 VS to test point TP1 2 VS to test point TP8 3 Install jumper shunt to position 1 and 2 on J1 4 Different...

Page 5: ...to the reference pin Figure 3 Single Supply Configuration Direct Reference Connection 1 VS to test point TP1 2 GND to test point TP8 3 Install jumper shunt to positions 2 and 3 on J1 4 Remove resistor...

Page 6: ...on A buffered reference configuration is useful when the source impedance is high for example a voltage divider Buffering a high impedance source with an operational amplifier provides a low impedance...

Page 7: ...s 2 and 3 on J1 and J2 5 VREF to test point TP14 6 Make sure that resistor R13 is not populated 7 Populate C13 with a 0 resistor The capacitor and resistor have the same footprint 8 Differential input...

Page 8: ...1 and Equation 2 Make C11 approximately ten times larger than C10 and C14 These calculations presume R4 R9 and C10 C14 Common mode cutoff frequency 1 Differential mode cutoff frequency 2 3 3 Output Ac...

Page 9: ...ack Copyright 2020 Texas Instruments Incorporated Universal Instrumentation Amplifier Evaluation Module Alternate Pinout 4 Schematic PCB Layout and Bill of Materials 4 1 Schematic The schematic for th...

Page 10: ...erials www ti com 10 SBOU226 February 2020 Submit Documentation Feedback Copyright 2020 Texas Instruments Incorporated Universal Instrumentation Amplifier Evaluation Module Alternate Pinout Figure 6 U...

Page 11: ...s Instruments Incorporated Universal Instrumentation Amplifier Evaluation Module Alternate Pinout 4 2 PCB Layout The component PCB layout for the SOIC 8 EVM is shown in Figure 7 NOTE Figure 7 is inten...

Page 12: ...6K160AC TDK C2 C4 C6 C8 4 1 F CAP CERM 1 uF 100 V 10 X7S 0805 0805 C2012X7S2A105K125AB TDK C9 C15 2 0 1 F CAP CERM 0 1 uF 100 V 10 X7S AEC Q200 Grade 1 0603 0603 CGA3E3X7S2A104K080AB TDK H1 H2 H3 H4 4...

Page 13: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Page 14: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Page 15: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Page 16: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Page 17: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Page 18: ...e resources are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reprod...

Page 19: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments INAEVM ALT SO8...

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