ADIMAX40056FAUA+
Overview
The MAX40056FAUA+ is a high-side bidirectional current-sense amplifier designed specifically for monitoring inductive loads subject to high-speed PWM signals. It features a unique PWM rejection circuitry that suppresses common-mode transients up to 500V/us, ensuring accurate current measurements without the need for external filtering that can introduce phase lag.
Why Choose This Part
The device offers a wide -0.1V to +65V input range with 140dB DC CMRR and 60dB AC CMRR at 50V. Its integrated 1% reference simplifies bidirectional sensing designs, while the 1.5V/us slew rate and 300kHz bandwidth provide fast response times for PWM-heavy environments.
Applications
Key Specifications
Getting Started
To evaluate this part, use the MAX40056EVKIT evaluation board which allows for quick testing of different gain variants and PWM rejection performance. Ensure the sense resistor is placed as close to the IC pins as possible to minimize parasitic inductance and maintain measurement accuracy.
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