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.