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INA211AIDCKT

TIINA211AIDCKT

Texas Instruments
Current Sense Amplifier 1 Circuit Single-Ended SC-70-6
NRND5,171 in stock
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Overview

The INA211AIDCKT is a high-accuracy, zero-drift voltage-output current-shunt monitor designed for sensing drops across shunts at common-mode voltages from -0.3V to 26V. Its ultra-low offset of 35 microvolts (max) and 500 V/V gain allow for precise current measurement using very small shunt resistors, minimizing power loss in the sensing path. The device is packaged in a compact SC-70-6, making it ideal for space-constrained power management and industrial monitoring applications.

Why Choose This Part

The zero-drift architecture ensures extremely low offset and temperature drift, maintaining high accuracy over the entire -40C to 125C operating range. With a low supply current of 65uA and high-side or low-side sensing capability, it offers flexibility in power-sensitive designs without sacrificing precision.

Applications

Battery Charging and Discharging
Monitoring current flow in battery-powered handheld devices to track state-of-charge and prevent over-current conditions.
Power Supply Management
Implementing over-current protection and load monitoring in DC-DC converters and power distribution units.
Precision Motor Control
Sensing phase currents or return path currents in low-power brushless or brushed DC motor drives.
Telecom Infrastructure
Monitoring current consumption on system backplanes and line cards within a 26V range.

Key Specifications

Slew Rate 0.4V/us
Output Type Single-Ended
Mounting Type Surface Mount
Amplifier Type Current Sense
Package / Case 6-TSSOP, SC-88, SOT-363
Current - Supply 65uA
Number of Circuits 1
Current - Input Bias 28 uA
Operating Temperature -40degC ~ 125degC
Gain Bandwidth Product 7 kHz
Voltage - Input Offset 0.55 uV
Supplier Device Package SC-70-6
Voltage - Supply Span (Max) 26 V
Voltage - Supply Span (Min) 2.7 V

Getting Started

To evaluate this part, use the INA211EVM evaluation module from Texas Instruments, which provides a pre-populated PCB with test points for shunt connections. When designing your PCB, use Kelvin connections for the shunt resistor inputs to avoid measurement errors caused by trace resistance.

INA211A Family

Also available as: INA211AIDCKR

Also Consider

INA199A1DCKT TITexas Instruments - A lower-cost alternative with similar pinout and 50V/V gain for applications with less stringent accuracy requirements.
INA210AIDCKT TITexas Instruments - Part of the same family but with a higher gain of 200V/V for different shunt resistor scaling needs.