TIINA181A1IDBVR
Overview
The INA181A1IDBVR is a bidirectional, cost-optimized current sense amplifier designed for high-side or low-side sensing. It integrates a matched resistor gain network and can monitor common-mode voltages from -0.2V to +26V regardless of the supply voltage. This specific A1 variant provides a fixed gain of 20 V/V in a compact SOT-23-6 package.
Why Choose This Part
The device offers a high 350 kHz bandwidth and 2V/us slew rate, making it suitable for fast control loops. Its bidirectional capability allows for a single IC to monitor both charging and discharging states by using a reference voltage to offset the output. With a wide operating temperature range from -40C to 125C, it maintains reliability in harsh industrial environments.
Applications
Key Specifications
Getting Started
To evaluate this part, use the INA181EVM evaluation module which supports all gain versions and allows for easy connection to shunt resistors. Ensure the VREF pin is driven by a low-impedance source to maintain accuracy in bidirectional sensing applications. For high-speed signals, keep the input trace lengths matched and minimize parasitic inductance near the shunt resistor.
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