G

0.6-V

Reference

Comparator

OUT

RESET

GND

VS

CMPOUT

VIN+

VIN-

CMPIN

13

INA200, INA201, INA202

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SBOS374E – NOVEMBER 2006 – REVISED SEPTEMBER 2017

Product Folder Links: INA200 INA201 INA202

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7 Detailed Description

7.1 Overview

The INA200, INA201, and INA202 devices are high-side current-shunt monitors with voltage output. The INA20x

devices can sense drops across shunts at common-mode voltages from –16 V to 80 V. The INA200–INA202

devices are available with three output voltage scales: 20 V/V, 50 V/V, and 100 V/V, with up to 500-kHz

bandwidth. The INA200, INA201, and INA202 devices incorporate an open-drain comparator and internal

reference providing a 0.6-V threshold. External dividers set the current trip point. The comparator includes a

latching capability, that can be made transparent by grounding (or leaving open) the RESET pin. The INA200,

INA201, and INA202 devices operate from a single 2.7 to 18-V supply, drawing a maximum of 1800 μA of supply

current. Package options include the very small MSOP-8 and the SO-8. All versions are specified over the

extended operating temperature range of –40°C to +125°C.

7.2 Functional Block Diagram

7.3 Feature Description

7.3.1 Basic Connections

Figure 26 shows the basic connections of the INA20x devices. The input pins (VIN+ and VIN–) must be connected

as closely as possible with Kelvin connections to the shunt resistor to minimize any resistance in series with the

shunt resistance.

Power-supply bypass capacitors are required for stability. Applications with noisy or high-impedance power

supplies may require additional decoupling capacitors to reject power-supply noise. Connect bypass capacitors

close to the device pins.