AD7402 - ADI

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

Part No

AD7402
Manufacturer

ADI
ChipWorker Part#

CW983453204
Description

16Bit, Isolated Sigma-Delta Modulator
Documentation

Datasheet

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AD7402 Specifications

Attribute	Attribute Value

Part Number	AD7402
Manufacturer	ADI
ChipWorker Part#	CW983453204
Documentation	Datasheet
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Product Lifecycle Status	Unknown

Product Description

Product Details
The AD7402 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., iCoupler® technology. The AD7402 operates from a 4.5 to 5.5 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 10 MHz. The original information can be reconstructed with an appropriate digital filter to achieve 87 dB signal to noise ratio (SNR) at 39 kSPS. The serial input/output can use a 3 V to 5.5 V or a 3.3 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 AD7402 device is offered in an 8-lead wide body SOIC package and has an operating temperature range of −40°C to +105°C.
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 = 1250 VPEAK
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
10 MHz internal clock rate
16 bits, no missing codes
Signal-to-noise ratio (SNR): 87 dB typical
Effective number of bits (ENOB): 13.5 bits typical
Typical offset drift vs. temperature: 1.7 µV/°C
On-board digital isolator
On-board reference
Full-scale analog input range: ±320 mV
−40°C to +105°C operating range
High common-mode transient immunity: >25 kV/µs
8-lead, wide-body SOIC, with increased creepage package
Slew rate limited output for low electromagnetic interference (EMI)

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