AD5700: FAQ

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  • AD5700 logic signal isolation

    Q There is no specification in the datasheet for RXD / CD – what current can these outputs drive? We want to isolate these signals and now we must select optocouplers according to the current…
  • AD5700 Protocols

    Q 1. Would you be able to advise on using the AD5700 for protocols other than HART? Does the AD5700 simply convert RS-232 to Bell 202 and vice versa, or does it only respond to HART encoded data? 2.…
  • AD5700/AD5700-1 & Full Duplex Operation

    Q. Can the AD5700/AD5700-1 support Full Duplex Operation? ---------------------------------------------------------------- A. HART is, by nature, half duplex. It uses one channel (one pair of wires…
  • AD5700: Current loop and HART with 4 channels

    Q We want to design a 4 channel current loop (4-20mA) receiver with HART. We have identified the AD5700 as usable for the HART interface (Master). Do you have suggestion to how the design should be made…
  • AD5700: HART Manufacturing ID

    Q If i am using your HART modem IC can I use your Manufacturer ID in the HART code? A The manufacturer ID and manufacturers ID codes are assigned by the Hart Communication Foundation (HCF…
  • AD5700: Problem with HART Modem

    Q We have a Loop Powered Transmitter with an AD5451 and AD5700 combination (HART), driven by a small microcontroller. All works nearly fine, the DAC (AD5451) has no problem, and also the AD5700 can send…
  • AD5700: Purpose of the switch on the RTS - HART_OUT line

    Q What is the purpose of the switch on the RTS - HART_OUT line (on datasheet diagram figure 28 and 29) Is it needed? A The switch is needed in that position in some cases: If the analog input current…
  • DEMO-AD5700D2Z kit : Finding a low cost IDE

    Q I am looking at using the DEMO-AD5700D2Z kit (Complete 4 mA to 20 mA Loop Powered Field Instrument with HART Interface) and want a low cost development environment for modifying the sample…
  • Eval-ADUCM360QSPZ + Demo-AD5700D2Z

    Q I have a customer who has bought one of the Demo-AD5700D2Z He want s to write some software so his Fluke 754 Documenting Process calibrator can communicate with this board. Can he use the Keil Ulink…

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