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ACPL-C72B

Broadcom
Part Number ACPL-C72B
Manufacturer Broadcom
Description Precision Miniature Isolation Amplifiers
Published Mar 17, 2024
Detailed Description ACPL-C72B, ACPL-C72A, ACPL-C720 Precision Miniature Isolation Amplifiers Data Sheet Description Features The Broadco...
Datasheet PDF File ACPL-C72B PDF File

ACPL-C72B
ACPL-C72B

Overview
ACPL-C72B, ACPL-C72A, ACPL-C720 Precision Miniature Isolation Amplifiers Data Sheet Description Features The Broadcom® ACPL-C72B, ACPL-C72A, and ACPL-C720 isolation amplifiers are designed for current sensing in electronic power converters in applications including motor drives and renewable energy systems.
In a typical motor drive implementation, current flows through an external shunt resistor and the resulting analog voltage drop is sensed by the isolation amplifier.
A differential output voltage that is proportional to the current is created on the other side of the optical isolation barrier.
Designed to reduce power loss on the shunt resistor, the ACPL-C72x series are optimized to accept a ±50-mV input voltage range.
For general applications, the ACPL-C72A (±1% gain tolerance) and the ACPL-C720 (±3% gain tolerance) are recommended.
For high-precision applications, the ACPL-C72B (±0.
5% gain tolerance) can be used.
The product operates from a single 5V supply and provides excellent linearity and dynamic performance of 65-dB SNR.
The high common-mode transient immunity (25 kV/μs) of the ACPL-C72x series provides the precision and stability needed to accurately monitor motor current in high-noise motor control environments, providing for smoother control (less “torque ripple”) in various types of motor control applications.
Combined with superior optical coupling technology, the ACPL-C72x series implements sigma-delta (Σ-Δ) analog-todigital converter, chopper-stabilized amplifiers, and a fully differential circuit topology to provide unequaled isolationmode noise rejection, low offset, high gain accuracy, and stability.
This performance is delivered in a compact, auto-insertable Stretched SO-8 (SSO-8) package that meets worldwide regulatory safety standards.
 ±0.
5% high gain accuracy (ACPL-C72B)  0.
5-mV input offset voltage  Excellent 0.
03% linearity  65-dB SNR  200-kHz wide bandwidth  3V to 5.
5V wide supply range  –40°C to +110°C operating temperature ...


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