AD7401A

PRODUCTION

Isolated Sigma-Delta Modulator

Data Sheet (Rev. E) Product Selection Table

Part Models: 3
1ku List Price: Starting From $4.16

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Overview

20 MHz maximum external clock rate
Second-order modulator
16 bits, no missing codes
±2 LSB INL typical at 16 bits
1 µV/°C typical offset drift
On-board digital isolator
On-board reference
±250 mV analog input range
Low power operation: 17 mA typical at 5.5 V
−40°C to +125°C operating range
16-lead SOIC package
Internal clock version: AD7400A
Safety and regulatory approvals
- UL 1577
  - V_ISO = 5000 V rms for 1 minute
- IEC / CSA 62368-1
- IEC / CSA 61010-1
- DIN EN IEC 60747-17 (VDE 0884-17)
  - V_IORM = 645 V peak
Qualified for Automotive Applications

The AD7401A 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 the Analog Devices, Inc., iCoupler^® technology. The AD7401A operates from a 5 V power supply and accepts a pseudo-differential input signal of ±250 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 up to 20 MHz. The original information can be reconstructed with an appropriate digital filter. The serial I/O can use a 5 V or a 3.3 V supply (V_DD2).

The serial interface is digitally isolated. High speed CMOS, combined with Analog Devices, Inc., iCoupler^® technology, means the on-chip isolation provides outstanding performance characteristics, superior to alternatives such as optocoupler devices. The device contains an on-chip reference. The AD7401A is offered in a 16-lead SOIC and has an operating temperature range of −40°C to +125°C.

Applications

AC motor controls
Shunt current monitoring
Data acquisition systems
Analog-to-digital and opto-isolator replacements

Part Models: 3
1ku List Price: Starting From $4.16

Documentation

Frequently Asked Question 1

FAQ 05/17/2017

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD7401AYRWZ	16-Lead SOIC Wide	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7401AYRWZ-RL	16-Lead SOIC Wide	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADW70015Z-0RL	16-Lead SOIC Wide	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 26, 2024 - 24_0023 Addition of Analog Devices, Ireland as an Alternate Fab Site for AD7401A
		PCN24_0023_Form Material_Report Delta Qualification Matrix Qualification Results Summary
AD7401AYRWZ	PRODUCTION
AD7401AYRWZ-RL	PRODUCTION
ADW70015Z-0RL	PRODUCTION
Feb 23, 2018 - 17_0193 AD7400, AD7401, AD7400A and AD7401A Datasheets: Updated Regulatory Information and Associated Creepage Specification
		PCN17_0193_Form Material_Report
AD7401AYRWZ	PRODUCTION
AD7401AYRWZ-RL	PRODUCTION
ADW70015Z-0RL	PRODUCTION
Nov 2, 2015 - 15_0135 Alternate Assembly Site of Select Isolator Products in 8L/16L SOIC_N, 16L/20L SOIC_W and 16L/20L SOIC_IC at ASE Chungli
		PCN15_0135_Form Material_Report Detailed Change Description Qualification Results Summary
AD7401AYRWZ	PRODUCTION
AD7401AYRWZ-RL	PRODUCTION
Nov 12, 2012 - 12_0269 Change of Moisture Sensitivity Level Rating for AD7400/01/00A/01A from MSL 1 to MSL 3.
		PCN12_0269_Form Material_Report Qualification Report Summary
AD7401AYRWZ	PRODUCTION
AD7401AYRWZ-RL	PRODUCTION
Feb 27, 2012 - 11_0066 Qualification of Alternate Fab Foundry Gold Plating Process Site for Isolation Products at ADI Limerick.
		PCN11_0066_Form Material_Report Qualification Plan Summary Flow Chart
AD7401AYRWZ	PRODUCTION
AD7401AYRWZ-RL	PRODUCTION
Aug 4, 2010 - 10_0117 Halogen Free Material Change for SOIC_W Products at Carsem
		PCN10_0117_Form Material_Report Reliability Report
AD7401AYRWZ	PRODUCTION
AD7401AYRWZ-RL	PRODUCTION
Aug 23, 2016 - 15_0135 Alternate Assembly Site of Select Isolator Products in 8L/16L SOIC_N, 16L/20L SOIC_W and 16L/20L SOIC_IC at ASE Chungli
		PCN15_0135_Form Material_Report Qualification Results Summary Qualification Results Summary Detailed Change Description Qualification Results Summary
ADW70015Z-0RL	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Device Drivers 1

CED1Z FPGA Project for AD7401/01A with Nios driver

Can't find the software or driver you need?

Tools & Simulations

IBIS Model 1

AD7400/AD7401 IBIS Model

Evaluation Kits

AD7401A Evaluation Board

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Product Details

The EVAL-AD7401AEDZ is a fully featured evaluation Kit for the AD7401A. This board operates in stand alone mode or in conjunction with the Converter Evaluation and Development board, EVAL-CED1Z . When operated with the Converter Evaluation and Development board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Converter Evaluation and Development board.