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ACPL-0873T-500E - Automotive 3-Channel Digital Filter for Sigma-Delta Modulators

Overviews

ACPL-0873T-500E is a 3-channel digital filter designed specifically for Second Order Sigma Delta Modulators in voltage and current sensing. Each input channel can receive an independent Sigma-Delta (Σ-Δ) modulator bit stream. The bit streams are processed by three individual digital decimation filters. Features of the digital filter include four decimation ratios for Sinc2 mode and three decimation ratios for Sinc3 mode, offset calibration, and fast over-range detection. 

Product Features

Direct interface between Isolated Sigma-Delta Modulator (ACPL-C797T/C799T) and MCU/DSP

Three individual digital filters

Synchronizing sampling time

Fast over-range detection

Offset calibration

Channel 1 MCLK clock detection at power up

Programmable input configuration

SPI-compatible interface

Compact surface-mount QFN-20 5 mm × 5 mm

Specifications

Operating temperature –40°C to 125°C

SPI clock frequency up to 17MHz

Modulator clock frequency up to 25MHz

Applications

Automotive electric motor phase and rail current sensing

Automotive DC/DC converter current sensing

Automotive AC-DC charger current sensing

Automotive battery current sensing

General voltage or current sensing

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