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INA299A1IDBVR

TIINA299A1IDBVR

Texas Instruments
Current Sense Amplifier 1 Circuit Single-Ended SOT-23-6
Active5,230 in stock
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Overview

The INA299A1IDBVR is a high-precision, bidirectional current sense amplifier designed to measure voltage drops across shunts over a wide common-mode range of -2V to 80V. It features a fixed gain of 20V/V and provides a single-ended output with a 650 kHz bandwidth, making it suitable for both DC and fast-transient current monitoring.

Why Choose This Part

This amplifier offers an excellent balance of speed and precision with a 2.5V/us slew rate and a low typical supply current of 650uA. Its wide input voltage range up to 80V allows for direct sensing in high-voltage rails without additional isolation components.

Applications

BMS Battery Management
Monitoring charge and discharge cycles in ESS battery systems with bidirectional current flow.
DC/DC Converters
High-side or low-side current sensing for closed-loop power control and overcurrent protection.
Remote Radio Units (RRU)
Precise power monitoring in telecommunications infrastructure components.
Motor Control
Phase current sensing in industrial motor drives requiring fast settling times and high common-mode rejection.

Key Specifications

Slew Rate 2.5V/us
Output Type Single-Ended
Mounting Type Surface Mount
-3db Bandwidth 650 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 provides test points for shunt connections and output monitoring. Ensure the shunt resistor is placed close to the IN+ and IN- pins to minimize trace inductance and maintain accuracy.

Also Consider

INA240A1PWR TITexas Instruments - Enhanced PWM rejection specifically optimized for motor drive applications.
MAX40056FAUA+ Analog Devices - High-precision bidirectional sensing with integrated protection for inductive kickback.