1 Features

1• Qualified for Automotive Applications

• Current Sense Amplifier

– Common-Mode Range: –16 V to +80 V

– Accuracy: 3.5% (Maximum) Over Temperature

– Bandwidth: 500 kHz

– Gain: 20 V/V

• Integrated Dual Comparators:

– Comparator 1 With Latch

– Comparator 2 With Optional Delay

• Quiescent Current: 1.8 mA

• Latch-Up Performance Meets 100 mA Per AECQ100,

Level I

• Packages: TSSOP-14

2 Applications

• Electric Power Steering (EPS) Systems

• Body Control Modules

• Brake Systems

• Electronic Stability Control (ESC) Systems

3 Description

The INA203-Q1 is a unidirectional current-shunt

monitor (also called a current sense amplifier) with

voltage output, dual comparators, and voltage

reference. The INA203-Q1 can sense drops across

shunts at common-mode voltages from –16 V to +80

V. The INA203-Q1 is available with 20-V/V gain with

up to 500-kHz bandwidth.

The INA203-Q1 incorporates two open-drain

comparators with internal 0.6-V references and also

provides a 1.2-V reference output. The comparator

references can be overridden by external inputs.

Comparator 1 includes a latching capability, and

Comparator 2 has a user-programmable delay.

The INA203-Q1 operates from a single 2.7 V to 18 V

supply. It is specified over the extended operating

temperature range of –40°C to +125°C.