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AD7403 Datasheet Isolated Sigma-delta Modulator

Manufacturer: Analog Devices

Overview: Data Sheet 16-Bit, Isolated Sigma-Delta Modulator AD7403.

General Description

The AD74031 is a high performance, second-order, Σ-Δ modulator that converts an analog input signal into a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler® technology.

The device operates from a 5 V (VDD1) power supply and accepts a differential input signal of ±250 mV (±320 mV full-scale).

The differential input is ideally suited to shunt voltage monitoring in high voltage applications where galvanic isolation is required.

Key Features

  • 5 MHz to 20 MHz external clock input rate 16 bits, no missing codes Signal-to-noise ratio (SNR): 88 dB typical Effective number of bits (ENOB): 14.2 bits typical Offset drift vs. temperature AD7403: 1.6 µV/°C typical AD7403-8: 2 µV/°C typical On-board digital isolator On-board reference Full-scale analog input range: ±320 mV Operating range AD7403:.
  • 40°C to + 125°C AD7403-8:.
  • 40°C to + 105°C High common-mode transient immunity: >25 kV/µs Wide-body SOIC with increased creepage pac.

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