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NCS199A1RSQT2G

ONNCS199A1RSQT2G

onsemi
Current Sense Amplifier 1 Circuit Rail-to-Rail SC-88/SC70-6/SOT-363
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Overview

The NCS199A1RSQT2G is a high-side or low-side current-shunt monitor with a fixed gain of 50. It features a zero-drift architecture that enables high-accuracy current sensing with a low input offset voltage across a wide common-mode range of -0.3V to 26V.

Why Choose This Part

This amplifier utilizes a zero-drift architecture to maintain high precision across the full -40 to 125 degrees Celsius operating range. Its low 40uA typical supply current and compact SC70-6 package make it ideal for power-constrained and space-limited embedded designs.

Applications

Battery Management Systems
Monitoring charge and discharge cycles in portable electronics or small battery packs.
Power Supply Monitoring
Real-time current measurement for overcurrent protection or power consumption tracking in DC-DC converters.
Motor Control Feedback
Measuring phase currents or DC bus current in motor drive circuits.

Key Specifications

Slew Rate 1V/us
Output Type Rail-to-Rail
Mounting Type Surface Mount
-3db Bandwidth 90 kHz
Amplifier Type Current Sense
Package / Case 6-TSSOP, SC-88, SOT-363
Current - Supply 40uA
Number of Circuits 1
Current - Input Bias 39 uA
Operating Temperature -40degC ~ 125degC
Voltage - Input Offset 5 uV
Supplier Device Package SC-88/SC70-6/SOT-363
Voltage - Supply Span (Max) 26 V
Voltage - Supply Span (Min) 2.2 V

Getting Started

To evaluate this part, place a low-resistance shunt resistor in the high-side or low-side power path and connect the differential inputs across it. Ensure the common-mode voltage remains within the -0.3V to 26V range and bypass the VDD pin with a 0.1uF capacitor.

Also Consider

MAX44284 Maxim Integrated / Analog Devices - Provides extremely low power consumption for ultra-low-power battery applications.
INA199 TITexas Instruments - A pin-compatible alternative with a similar 26V common-mode range and gain of 50.

Categories

Analog ICs