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.