High Side Measurement Current Shunt

Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring.

The Texas Instruments INA200, INA201, and INA202 devices are high-side current-shunt monitors with voltage output and integrated comparator. The INA20x devices can sense drops across shunts at common-mode voltages from –16 V to 80 V. The INA20x series is available with three output voltage scales: 20V/V, 50 V/V, and 100 V/V, with a bandwidth up to 500-kHz.

Complete Current Sense Solution
Three Gain Options Available:
INA200 = 20 V/V
INA201 = 50 V/V
INA202 = 100V/V
0.6-V Internal Voltage Reference
Internal Open-Drain Comparator
Latching Capability on Comparator
Common-Mode Range: 16 V to 80 V
High Accuracy: 3.5% Maximum Error Over Temperature
Bandwidth: 500 kHz (INA200)
Quiescent Current: 1800 μA (Maximum)
Packages: SOIC-8, VSSOP-8

Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.