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INA180A1IDBVT

TIINA180A1IDBVT

Texas Instruments
Current Sense Amplifier 1 Circuit Rail-to-Rail SOT-23-5
Active2,990 in stock
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Overview

The INA180A1IDBVT is a high-side or low-side bidirectional current sense amplifier designed for cost-sensitive power management applications. It integrates a matched resistor gain network and provides a rail-to-rail output voltage that is proportional to the current flowing through an external sense resistor. This specific variant features a fixed gain and supports common-mode voltages from -0.2V to 26V.

Why Choose This Part

The device offers a 350 kHz bandwidth and a 2V/us slew rate, enabling rapid response to transient current events. With a low supply current of 260uA and a compact SOT-23-5 package, it is ideal for space-constrained and power-efficient embedded designs. Its wide common-mode range allows for sensing on rails up to 26V regardless of the supply voltage.

Applications

Battery Management Systems
Monitoring charge and discharge currents in multi-cell battery packs to prevent overcurrent conditions.
Motor Control
Measuring phase current or DC link current in brushless DC motors for torque and speed regulation.
Power Supply Monitoring
Real-time current tracking in DC-DC converters and telecommunications power modules.
Overcurrent Protection
Providing fast feedback to microcontrollers or hardware comparators to trigger safety shutdowns.

Key Specifications

Slew Rate 2V/us
Output Type Rail-to-Rail
Mounting Type Surface Mount
-3db Bandwidth 350 kHz
Amplifier Type Current Sense
Package / Case SC-74A, SOT-753
Current - Supply 260uA
Number of Circuits 1
Current - Input Bias 80 uA
Operating Temperature -40degC ~ 125degC
Voltage - Input Offset 100 uV
Supplier Device Package SOT-23-5
Voltage - Supply Span (Max) 5.5 V
Voltage - Supply Span (Min) 2.7 V

Getting Started

To evaluate this part, use the INA180EVM evaluation module which provides test points for the VDD, GND, and OUT pins. Ensure the shunt resistor is placed close to the IN+ and IN- pins to minimize trace resistance errors and inductive loops. The output is analog, so it should be connected to a microcontroller ADC with an appropriate RC filter if high-frequency noise is present.

INA180A1 Family

Also available as: INA180A1IDBVR

Also Consider

INA210 TITexas Instruments - Offers significantly higher precision with a lower offset voltage for high-accuracy sensing requirements.
MAX44284 Maxim Integrated / Analog Devices - Provides extremely low power consumption for portable, battery-operated IoT devices.
INA199 TITexas Instruments - A common alternative that shares a similar voltage range but is available in different gain configurations.