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INA299A3IDBVR

TIINA299A3IDBVR

Texas Instruments
Current Sense Amplifier 1 Circuit Single-Ended SOT-23-6
Active2,301 in stock
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Overview

The INA299A3IDBVR is a high-precision, bidirectional current-sense amplifier designed to monitor voltage drops across shunt resistors over a wide common-mode range of -2V to +80V. With a 400 kHz bandwidth and a high CMRR of 120dB, it provides accurate current measurements in systems prone to common-mode voltage fluctuations.

Why Choose This Part

The device features a low typical supply current of 650uA while maintaining a high slew rate of 2.5V/us. Its 120dB CMRR and 0.25 percent accuracy make it ideal for high-voltage environments where noise rejection is critical for maintaining signal integrity.

Applications

DC/DC Converters
High-side or low-side current monitoring to ensure efficient power conversion and overcurrent protection.
Battery Management Systems (BMS)
Precise tracking of charge and discharge cycles in ESS battery arrays for state-of-charge estimation.
Motor Control
Phase current sensing in industrial motor drives to provide feedback for closed-loop control systems.
Power Distribution Units
Monitoring current flow in server racks or industrial power rails to detect faults or load imbalances.

Key Specifications

Slew Rate 2.5V/us
Output Type Single-Ended
Mounting Type Surface Mount
-3db Bandwidth 400 kHz
Amplifier Type Current Sense
Package / Case SOT-23-6
Current - Supply 950uA
Number of Circuits 1
Current - Input Bias 13 uA
Operating Temperature -40degC ~ 125degC (TA)
Voltage - Input Offset 150 uV
Supplier Device Package SOT-23-6
Voltage - Supply Span (Max) 12 V
Voltage - Supply Span (Min) 2.7 V

Getting Started

To evaluate this part, use the INA299EVM evaluation module which allows for easy connection to external shunt resistors and power supplies. Ensure the bypass capacitor is placed close to the VDD pin (2.7V to 12V) and utilize Kelvin connections at the shunt resistor to maximize measurement accuracy.

Also Consider

MAX44284FAWT+T Analog Devices - Provides a high-precision alternative with extremely low power consumption for portable electronics.