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INA301A1IDGKR

TIINA301A1IDGKR

Texas Instruments
Current Monitor Regulator High/Low-Side 8-VSSOP
NRND3,135 in stock

Overview

The INA301A1IDGKR is a high-side or low-side current-shunt monitor that combines a precision voltage-output amplifier with an integrated high-speed comparator. It provides a real-time analog output for current monitoring alongside a fast-acting alert signal with a response time as low as 1 microsecond. This device is designed for overcurrent protection and feedback control in systems operating with common-mode voltages up to 36V.

Why Choose This Part

The INA301A1IDGKR offers a high bandwidth of 550kHz and a slew rate of 4V/us, making it suitable for dynamic current measurements. Its zero-drift architecture ensures 0.1 percent accuracy across the full -40C to 125C temperature range. The integrated open-drain comparator supports latching mode, reducing the need for external high-speed logic to catch transient fault conditions.

Applications

Overcurrent Protection
Utilizes the integrated high-speed comparator and 1 microsecond response time to protect sensitive power electronics from short circuits.
Motor Control
Provides high-accuracy phase current sensing for closed-loop motor control in industrial drives.
Power Supply Monitoring
Monitors rail currents in server and telecom power supplies with a wide common-mode range of 0V to 36V.
Battery Management Systems
Accurately measures charge and discharge currents in battery packs with zero-drift performance.

Key Specifications

Function Current Monitor
Mounting Type Surface Mount
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Sensing Method High/Low-Side
Voltage - Input 0V ~ 36V
Operating Temperature -40degC ~ 125degC
Supplier Device Package 8-VSSOP

Getting Started

To evaluate this part, use the INA301EVM evaluation module which provides test points for the analog output and alert pins. Connect a shunt resistor sized for your target current range, ensuring the differential voltage stays within the linear range of the A1 gain variant. Configure the alert threshold using a single external resistor on the LIMIT pin and select between transparent or latching mode using the RESET pin.