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
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.
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