Overview
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
- 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
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., iCoupler® 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 operating 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
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (5)
Documentation & Resources
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ADSP-CM40x in Solar PV Inverters4/24/2015
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Protect your Innovations: from High Precision to High Power8/9/2023
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High Performance Inverter Platform From Analog Devices6/22/2023
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Overview of Isolated Inverter Platform for Motor Control Design6/22/2023
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Control, Drive, Sense, High Density SiC/GaN Power Conversion6/13/2023
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高密度の SiC/GaN による電力変換、それを支える制御/駆動/検出技術3/3/2022
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Analog Devices' Isolation Technology for Industrial Motor Control3/3/2022
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控制、驱动、检测高密度SiC/GaN功率转换3/3/2022
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Motor Control Solutions for an Industrial Ethernet Machine11/28/2018
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Synchronized Multi-Axis Systems Offering11/28/2018
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How Next-Generation Isolated Sigma-Delta Modulators Improve Your System-Level Current Measurement12/20/2021
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IC Ecosystem for Driving Next-Generation SiC/GaN Power Converters10/25/2017
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Selecting the Right Sense Resistor for Motor Control with Reinforced Isolation11/1/2016
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Functional Safety for Integrated Circuits Used in Variable Speed Drives7/1/2016
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A System Approach to Understanding the Impact of Nonideal Effects in a Motor Drive Current Loop5/1/2016
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A Networked Approach To Improving Energy Efficiency In Manufacturing Automation Systems1/1/2016
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Gate Drive and Current Feedback Signal Isolation in Industrial Motor Drives9/1/2015
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Sigma Delta Conversion Used for Motor Control8/1/2015
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Sigma-Delta Modulators Improve Motion Control Efficiency6/1/2015
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Driving Synchronized Precision Motion in Multiaxis Servo Control Systems4/1/2015
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Enhancing Industrial Motor Control Performance Utilizing Digital Isolator Technology11/1/2014
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Measurement Techniques for Industrial Motion Control6/1/2014
Software & Systems Requirements
Evaluation Software
Tools & Simulations
Virtual Eval - BETA
Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.

MathWorks®
Product Recommendations
AD7403 Companion Parts
Recommended DC/DC Converters
Recommended Processor for the AD7403
- For integrated sinc filter implementation: ADSP-CM402F, ADSP-CM403F, ADSP-CM407F, ADSP-CM408F, ADSP-CM409F.
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
---|---|---|---|---|
AD7403-8BRIZ | Material Declaration | Reliability Data | 8-Lead SOIC (Increased Creepage) | |
AD7403-8BRIZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC (Increased Creepage) | |
AD7403-8BRIZ-RL7 | Material Declaration | Reliability Data | 8-Lead SOIC (Increased Creepage) | |
AD7403BRIZ | Material Declaration | Reliability Data | 16-Lead SOIC (Increased Creepage) | |
AD7403BRIZ-RL | Material Declaration | Reliability Data | 16-Lead SOIC (Increased Creepage) | |
AD7403BRIZ-RL7 | Material Declaration | Reliability Data | 16-Lead SOIC (Increased Creepage) | |
AD7403TRIZ-EP | Material Declaration | Reliability Data | 16-Lead SOIC (Increased Creepage) | |
AD7403TRIZ-EP-RL7 | Material Declaration | Reliability Data | 16-Lead SOIC (Increased Creepage) | |
Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
AD7403 Discussions
Sample & Buy
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.