Texas Instruments INA281EVM, User Manual

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Overview
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4 SBOU244 – June 2020
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INA281EVM
2 Overview
The INA281 device is a voltage-output, high-side and low-side measurement, current sense amplifier with
an enable pin in a very-small SOT-23 package. As shown in
Table 1 , the INA281 has gains that range
from 20 V/V to 500 V/V, depending on the gain option selected. The voltage developed across the device
inputs is amplified by the corresponding gain of the specific device, and is presented at the output pin. The
device accurately senses voltage drops across shunts at common-mode voltages from –4 V to +110 V,
independent of supply voltages. The device survives common-mode voltages from –20 V to +120 V. The
device operates with supply voltages between 2.7 V and 20 V, and draws a typical of 1.7 mA at room
temperature.
Table 1. INA281 Gain Option Summary
Product Gain (V/V)
INA281A1 and INA281B1 20
INA281A2 and INA281B2 50
INA281A3 and INA281B3 100
INA281A4 and INA281B4 200
INA281A5 and INA281B5 500
2.1 EVM Kit Contents
Table 2 summarizes the contents of the INA281EVM kit. Contact the Texas Instruments Product
Information Center nearest you if any component is missing. TI also recommends checking the INA281
device product folder at www.ti.com for any further information regarding this product.
Table 2. INA281EVM Kit Contents
Item Item Part Number Quantity
INA281EVM test board INA281EVM 1
2.2 Related Documentation From Texas Instruments
This document provides information regarding Texas Instruments' integrated circuits used in the assembly
of the INA281EVM.
Table 3. Related Documentation
Document Literature Number
INA281 product data sheet SBOSA29
INA281-Q1 product data sheet SBOSA01