AD7401YRWZ-REEL7

隔离式Σ-Δ调制器 Isolated Sigma-Delta Modulator

GENERAL DESCRIPTION

The AD74011 is a second-order, Σ-Δ modulator that converts an analog input signal into a high speed, 1-bit data stream with on-chip digital isolation based on Analog Devices, Inc. iCoupler® technology. The AD7401 operates from a 5 V power supply and accepts a differential input signal of ±200 mV ±320 mV full scale. The analog input is continuously sampled by the analog modulator, eliminating the need for external sample-and-hold circuitry.

FEATURES

20 MHz maximum external clock rate

Second-order modulator

16 bits no missing codes

±2 LSB INL typical at 16 bits

3.5 μV/°C maximum offset drift

On-board digital isolator

On-board reference

Low power operation: 20 mA maximum at 5.25 V

−40°C to +105°C operating range

16-lead SOIC package

AD7400, internal clock version

Safety and regulatory approvals

  UL recognition

   3750 V rms for 1 minute per UL 1577

  CSA Component Acceptance Notice #5A

  VDE Certificate of Conformity

   DIN EN 60747-5-2 VDE 0884 Part 2: 2003-01

   DIN EN 60950 VDE 0805: 2001-12; EN 60950: 2000

   VIORM= 891 V peak

APPLICATIONS

AC motor controls

Data acquisition systems

A/D + opto-isolator replacements