Analog Devices AD7400
The AD7400 is a second-order, sigma-delta (Σ-Δ) modulator that converts an analog input signal to a high speed, 1-bit data stream with on-chip digital isolation based on Analog Devices, Inc. The AD7400 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.| Part No. | AD7400 |
|---|---|
| Datasheet | AD7400 Download |
| Manufacturer |  Analog Devices |
| Description | Isolated Sigma-Delta Modulator |
| Buy | Stock & Price |
FEATURES
► 10 MHz 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: 18 mA maximum at 5.25 V ► −40°C to +105°C operating range ► 16-lead SOIC package ► Safety and regulatory approvals ► UL 1577 ► VISO = 5000 V rms for 1 minute ► IEC / CSA 62368-1 ► IEC / CSA 61010-1 ► DIN EN IEC 60747-17 (VDE 0884-17) ► VIORM = 645 V peakAPPLICATIONS
► AC motor controls ► Data acquisition systems ► A/D + opto-isolator replacements FUNCTIONAL BLOCK DIAGRAM Data Sheet AD7400 Isolated Sigma-Delta ModulatorGENERAL DESCRIPTION
iCoupler® technology. The input information is contained in the output stream as a density of ones with a data rate of 10 MHz. The original information can be reconstructed with an appropriate digital filter. The serial I/O can use a 5 V or a 3 V supply (VDD2). The serial interface is digitally isolated. High speed CMOS, combined with m...
