1 Features

? AEC-Q100 qualified for automotive applications

– Temperature grade 1: –40°C ≤ TA ≤ 125°C

– HBM ESD classification level 2

– CDM ESD classification level C6

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? Common-mode range (VCM): –0.2V to 26V

? High bandwidth: 350kHz (A1 devices)

? Offset voltage:

– ±55μV (maximum) at VCM = 0V

– ±100μV (maximum) at VCM = 12V (A4 device)

? Output slew rate: 2V/μs

? Bidirectional current-sensing capability

? Accuracy:

– Maximum gain error (A1, A2, A3): ±0.2

– Maximum offset drift: 0.5μV/°C

? Gain options:

– 20V/V (A1 devices)

– 50V/V (A2 devices)

– 100V/V (A3 devices)

– 200V/V (A4 devices)

? Quiescent current: 260μA (maximum)

2 Applications

? Body Control Modules

? Zonal Control Modules

? ADAS Domain Controllers

? ADAS Sensor Diagnostics

3 Description

The INA185-Q1 current sense amplifier is designed

for use in cost-sensitive space constrained

applications. This device is a bidirectional, currentsense

amplifier (also called a current-shunt monitor)

that senses the voltage drop across a current-sense

resistor at common-mode voltages from –0.2V to 26V,

independent of the supply voltage. The INA185-Q1

integrates a matched resistor gain network in four,

fixed-gain device options: 20V/V, 50V/V, 100V/V, or

200V/V. This matched gain resistor network minimizes

gain error and reduces the temperature drift.

The INA185-Q1 operates from a single 2.7V to 5.5V

power supply. The device draws a maximum supply

current of 260μA and features high slew rate and

bandwidth making this device an excellent choice for

many power-supply and motor-control applications.

The INA185-Q1 is available in an industry standard

SC70 package. The device is specified over the

extended operating temperature range of –40°C to

125°C.