1 Features
• AEC-Q100 qualified for automotive applications:
– Temperature grade 1: –40°C to +125°C, TA
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Low input bias currents: 500 pA (typical)
(enables microamp current measurement)
• Low power:
– Low supply voltage, VS: 1.7 V to 5.5 V
– Low shutdown current: 100 nA (maximum)
– Low quiescent current: 50 μA at 25°C (typical)
• Accuracy:
– Common-mode rejection ratio: 132 dB
(minimum)
– Gain error: ±0.2% (A1 device)
– Gain drift: 7 ppm/°C (maximum)
– Offset voltage, VOS: ±15 μV (maximum)
– Offset drift: 80 nV/°C (maximum)
• Wide common-mode voltage: –0.2 V to +40 V with
survivability up to 42 V
• Bidirectional current sensing capability
• Gain options:
– INA190A1-Q1: 25 V/V
– INA190A2-Q1: 50 V/V
– INA190A3-Q1: 100 V/V
– INA190A4-Q1: 200 V/V
– INA190A5-Q1: 500 V/V

2 Applications
• Body control module (BCM)
• Telematics control unit
• Emergency call (eCall)
• Battery management system (BMS)
• Automotive head unit

3 Description
The INA190-Q1 is an automotive, low-power, voltageoutput,
current-shunt monitor (also called a currentsense
amplifier). This device is commonly used
for monitoring systems directly connected to an
automotive 12-V battery. The INA190-Q1 can sense
drops across shunts at common-mode voltages from
–0.2 V to +40 V, independent of the supply voltage.
In addition, the input pins have an absolute maximum
voltage of 42 V.
The low input bias current of the device permits the
use of larger current-sense resistors, thus providing
accurate current measurements in the microamp
range. The low offset voltage of the zero-drift
architecture extends the dynamic range of the current
measurement. This feature allows for smaller sense
resistors with lower power loss, while still providing
accurate current measurements.
The INA190-Q1 operates from a single 1.7-V to 5.5-
V power supply, and draws a maximum of 65 μA
of supply current when enabled; only 0.1 μA when
disabled. Five fixed gain options are available: 25 V/V,
50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device
is specified over the operating temperature range of
–40°C to +125°C, and offered in SC70 and SOT-23
packages.