AD7400 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7400
Manufacturer

ADI
ChipWorker Part#

CW389428637
Description

Isolated Sigma-Delta Modulator
Documentation

Datasheet

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AD7400 Specifications

Attribute	Attribute Value

Part Number	AD7400
Manufacturer	ADI
ChipWorker Part#	CW389428637
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
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. _i_Coupler® technology. 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. 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 monolithic air core transformer technology, means the on-chip isolation provides outstanding performance characteristics superior to alternatives such as optocoupler devices. The part contains an on-chip reference. The AD7400 is offered in a 16-lead SOIC and has an operating temperature range of −40°C to +105°C.
An external clock version, AD7401, is also available.
**Applications**
AC motor controls
Data acquisition systems
A/D + opto-isolator replacements
### Features and Benefits
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
See attached Data Sheet for more Features.

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