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ACPL-C740 - Optically Isolated Sigma-Delta Modulator

General Description

The Broadcom® ACPL-C740 is a 1-bit, second-order sigmadelta (-) modulator that converts an analog input signal into a high-speed data stream with galvanic isolation based on optical coupling technology.

Key Features

  • Superior optical isolation and insulation.
  • 20-MHz internal clock.
  • 1-bit, second-order sigma-delta modulator.
  • 16 bits resolution no missing codes (12 bits ENOB).
  • 86 dB SNR.
  • 1 µV/°C maximum offset drift.
  • ±1% gain error.
  • Internal reference voltage.
  • ±200-mV linear range with single 5V supply (±320 mV full scale).
  • 3V to 5.5V wide supply range for digital interface.
  • 40°C to +110°C operating temperature range.
  • SSO-8 package.
  • 25-.

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Datasheet Details

Part number ACPL-C740
Manufacturer Broadcom
File Size 1.39 MB
Description Optically Isolated Sigma-Delta Modulator
Datasheet download datasheet ACPL-C740 Datasheet

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ACPL-C740 Optically Isolated Sigma-Delta Modulator Data Sheet Description The Broadcom® ACPL-C740 is a 1-bit, second-order sigmadelta (-) modulator that converts an analog input signal into a high-speed data stream with galvanic isolation based on optical coupling technology. The ACPL-C740 operates from a 5V power supply with dynamic range of 86 dB with an appropriate digital filter. The differential inputs of ±200 mV (full scale ±320 mV) are ideal for direct connection to shunt resistors or other low-level signal sources in applications, such as motor phase current measurement. The analog input is continuously sampled by a means of sigma-delta over-sampling using an onboard clock.