AD5700-1

Low Power HART Modem with Precision Internal Oscillator

Data Sheet
Rev. F
icon-recommended Recommended for New Designs
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Datasheet
Data Sheet Rev. F
CN Rev. B | JP Rev. A
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Circuit Note Rev. 0
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Overview

Features and Benefits

  • HART-compliant fully integrated FSK modem
  • 1200 Hz and 2200 Hz sinusoidal shift frequencies
  • 115 µA maximum supply current in receive mode
  • Suitable for intrinsically safe applications
  • Integrated receive band-pass filter
    • Minimal external components required
  • Clocking optimized for various system configurations
    • Ultralow power crystal oscillator (60 µA maximum)
    • External CMOS clock source
    • Precision internal oscillator
  • Buffered HART output—extra drive capability
  • 8 kV HBM ESD rating
  • 1.71 V to 5.5 V power supply
  • 1.71 V to 5.5 V interface
  • −40°C to +125°C operation
  • 4 mm × 4 mm LFCSP package
  • HART physical layer compliant
  • UART interface

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

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Product Lifecycle icon-recommended 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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IBIS Models

Reference Designs (8)

Product Recommendations

AD5700-1 Companion Parts

Recommended Output DAC's

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

Reference Materials

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.

AD5700-1 Material Declaration
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PCN-PDN Information

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  • AD5700-1ACPZ-RL7 Production
  • AD5700-1BCPZ-R5 Production
  • AD5700-1BCPZ-RL7 Production

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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.