AD7401 - Analog Devices

AD7401 Isolated Sigma-Delta Modulator

The AD74011 is a second-order, sigma-delta (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 m.

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 Safety and regulatory approvals UL recognition 5000 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice #5A VDE Certificate of Conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM = 891 V peak APPLICATIONS AC motor controls Data acquisition systems A/D + opto-isolator replacements GENERAL DES.