1 Features

1• Qualified for Automotive Applications

• AEC-Q100 Qualified With the Following Results:

– Device Temperature Grade 1: −40°C to 125°C

Ambient Operating Temperature Range

– Device HBM ESD Classification Level 2

– Device CDM ESD Classification Level C6

• Complete Unidirectional High-Side Current

Measurement Circuit

• Wide Supply and Common-Mode Ranges

– INA139-Q1: 2.7 V to 40 V

– INA169-Q1: 2.7 V to 60 V

• Independent Supply and Input Common-Mode

Voltages

• Single Resistor Gain Set

• Low Quiescent Current (60 μA Typical)

• Wide Temperature Range: –40°C to +125°C

• Package: TSSOP-8

2 Applications

• Electric Power Steering (EPS) Systems

• Body Control Modules

• Brake Systems

• Electronic Stability Control (ESC) Systems

3 Description

The INA139-Q1 and INA169-Q1 (INA1x9-Q1) are

high-side, unidirectional, current shunt monitors. Wide

input common-mode voltage range, high-speed, low

quiescent current, and TSSOP-8 packaging enable

use in a variety of applications.

The device converts a differential input voltage to a

current output. This current is converted back to a

voltage with an external load resistor that sets any

gain from 1 to over 100. Although designed for

current shunt measurement, the circuit invites

creative applications in measurement and level

shifting.

Both the INA139-Q1 and INA169-Q1 are available in

a TSSOP-8 package, and are specified for the –40°C

to +125°C temperature range.