AD5700

Low Power HART Modem

Manufactured by:

Design News Golden Mousetrap Award 2012

Product Details

The AD5700/AD5700-1 are single-chip solutions, designed and specified to operate as a HART® FSK half-duplex modem, complying with the HART physical layer requirements. The AD5700/AD5700-1 integrate all of the necessary filtering, signal detection, modulating, demodulating and signal generation functions, thus requiring few external components. The 0.5% precision internal oscillator on the AD5700-1 greatly reduces the board space requirements, making it ideal for line-powered applications in both master and slave configurations. The maximum supply current consumption is 115µA, making  theAD5700/AD5700-1 an optimal choice for low power loop-powered applications. Transmit waveforms are phase continuous 1200 Hz and 2200 Hz sinusoids. The AD5700/AD5700-1 contain accurate carrier detect circuitry and use a standard UART interface.

Applications

  • Field transmitters
  • HART multiplexers
  • PLC and DCS analog I/O modules
  • HART network connectivity

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

(1)

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EVAL-AD5700

Product Details

Both the AD5700 and the AD5700-1 products can be evaluated using the EVAL-AD5700-1EBZ Evaluation board. If evaluating the AD5700 product, simply disable the internal oscillator (i.e. configure the part to use either a CMOS clock or a crystal oscillator). No SDP board is required for this Evaluation board.

Tools & Simulations

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Reference Designs

(4)

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CN0267

CN0267 Circuit Diagram

CN0267 Photo

CN0382

CN0382 Circuit Diagram

CN0382 Photo

CN0278

CN0278 Circuit Diagram

CN0270

CN0270 Circuit Diagram

CN0270 Photo

Product Recommendations

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AD5700 Companion Parts

Recommended Output DAC's

  • For 16-bit, loop powered, 4 mA to 20 mA DAC , we recommend the AD5421 .
  • For 16-bit, quad-channel, 4 mA to 20 mA and voltage output DAC , we recommend the AD5755-1 .
  • For 12-bit /16-bit, current source and voltage output DAC's , we recommend the AD5412 or the AD5422 .
  • For 12-bit /16-bit, line powered, 4 mA to 20 mA current source DAC's , we recommend the AD5410 or the AD5420 .

Reference Materials

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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.

AD5700 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Discussions

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AD5700 Discussions

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Sample & Buy

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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.