Texas Instruments INA190EVM, User Manual

Page: 2 / 20

Overview
www.ti.com
2 SBOU201A – April 2018 – Revised September 2018
Submit Documentation Feedback
Copyright © 2018, Texas Instruments Incorporated
INA190EVM User's Guide
List of Figures
1 INA190EVM Schematic - Gain A1 and A3 Panels
......................................................................
8
2 INA190EVM Schematic - Gain A2 and A4 Panels
......................................................................
9
3 INA190EVM Schematic - Gain A5 and Guarding Panels
.............................................................
10
4 INA190EVM Top Overlay
.................................................................................................
11
5 INA190EVM Bottom Overlay
.............................................................................................
11
6 INA190EVM Top Layer
....................................................................................................
11
7 INA190EVM Bottom Layer
...............................................................................................
11
8 INA190EVM Top Solder
..................................................................................................
11
9 INA190EVM Bottom Solder
..............................................................................................
11
10 INA190EVM Drill Drawing
.................................................................................................
12
List of Tables
1 INA190 Device Summary
...................................................................................................
2
2 INA190EVM Kit Contents
...................................................................................................
3
3 Related Documentation
.....................................................................................................
3
4 Bill of Materials
.............................................................................................................
13
Trademarks
All trademarks are the property of their respective owners.
1 Overview
The INA190 devices are voltage output, high- and low-side measurement, bi-directional, zero-drift current
shunt monitors. This family of devices has gains that range from 25 V/V to 500 V/V. The voltage
developed across the device inputs is amplified by the corresponding gain of the specific device and is
presented at the output pin. These devices can accurately sense voltage drops across shunts at common-
mode voltages from –0.1 V to 40 V, independent of supply voltages. These devices operate with supply
voltages between 2.7 V and 5.5 V and draw a maximum of 65 µA at room temperature. The low offset of
the zero-drift architecture enables the sensing of very small differential input voltage which helps widen
the usable input dynamic range. Additionally, the INA190 has a very low input bias current and thus, can
easily measure microamps of current.
The INA190 devices are currently available in a QFN package. Table 1 summarizes the available device
gain options.
Table 1. INA190 Device Summary
Product Gain
INA190A1 25
INA190A2 50
INA190A3 100
INA190A4 200
INA190A5 500