AD7403 - ADI

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

Part No

AD7403
Manufacturer

ADI
ChipWorker Part#

CW760395317
Description

16Bit, Isolated Sigma-Delta Modulator
Documentation

Datasheet

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AD7403 Specifications

Attribute	Attribute Value

Part Number	AD7403
Manufacturer	ADI
ChipWorker Part#	CW760395317
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The AD7403 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., _i_Coupler® technology. The AD7403 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.
The analog input is continuously sampled by a high performance analog modulator, and converted to a ones density digital output stream with a data rate of up to 20 MHz. The original information can be reconstructed with an appropriate digital filter to achieve 88 dB signal to noise ratio (SNR) at 78.1 kSPS. The serial input/output can use a 5 V or a 3 V supply (VDD2).
The serial interface is digitally isolated. High speed complementary metal oxide semiconductor (CMOS) technology, combined with monolithic transformer technology, means the on-chip isolation provides outstanding performance characteristics, superior to alternatives such as optocoupler devices. The AD7403 device is offered in a 16-lead, wide-body SOIC package and has an oper-ating temperature range of −40°C to +125°C. The AD7403-8 device is offered in an 8-lead, wide-body SOIC package and has an operating temperature range of −40°C to +105°C.
**Applications**
Shunt current monitoring
AC motor controls
Power and solar inverters
Wind turbine inverters
Data acquisition systems
Analog-to-digital and opto-isolator replacements
### Features and Benefits
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
Typical offset drift vs. temperature: 1.6 μV/°C typical
On-board digital isolator
On-board reference
See data sheet for additional features
**AD7403-EP supports defense and aerospace applications (AQEC standard)**
Download AD7403-EP data sheet
Military temperature range: −55°C to +125°C
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Enhanced product change notification
Qualification data available on request
V62/16625 DSCC Drawing Number

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