AD7403

16-Bit, Isolated Sigma-Delta Modulator
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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.

APPLICATIONS

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  • Shunt current monitoring
  • AC motor controls
  • Power and solar inverters
  • Wind turbine inverters
  • Data acquisition systems
  • Analog-to-digital and opto-isolator replacements

Product Lifecycle

checked 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

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Product Details

The EVAL-AD7403FMCZ is a full featured evaluation board designed to allow the user to easily evaluate all features of the AD7403 isolated analog-to-digital converter (ADC). The evaluation board can be controlled by the EVAL-SDP-CH1Z via FMCZ connector (J9). The SDP-H1 board (EVAL-SDP-CH1Z) allows the evaluation board to be controlled through a USB port of a PC using the evaluation board software available for download from the product page or from the included installer CD.


On-board components include the following:

ADuM6000: isolated iCoupler® 5kV, DC / DC converter

ADP2441: 36 V, 1A, synchronous, step down DC-DC regulator

ADP7104ARDZ-5.0: 5 V low noise LDO


Features

  • Full featured evaluation board for the AD7403
  • On-board power supplies
  • Standalone capability
  • System demonstration platform (SDP-H1) compatible (EVAL-SDP-CH1Z)
  • PC software for control and data analysis (CD with software included in evaluation kit)

Evaluation Kit Contents
  • Evaluation board
  • CD containing evaluation board software installation

Additional Equipment Required
  • EVAL-SDP-CH1Z (must be ordered separately) includes a USB cable and 12v wall wart.
  • Signal source
  • PC running Windows XP SP3, Windows Vista, or Windows 7 with USB 2.0 port

Tools & Simulations

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IBIS Models

Design Tools

Product Recommendations

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AD7403 Companion parts

Recommended DC/DC Converters

  • For isolated Vdd1 (5V) , we recommend the ADUM6000 .
  • For non-isolated Vdd1 (5V) , we recommend the ADP2441 .

Recommended Processor for the AD7403

Design Resources

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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.

AD7403 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Discussions

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ad7403 Discussions

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Price Table Help

 
Evaluation Boards Pricing displayed is based on 1-piece.
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.