DS8500
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DS8500

HART Modem

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Fewer External Components and a Small 20-Pin TQFN Package Reduce System Cost and Size

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Part Models 2
1ku List Price Starting From $6.23
Features
  • Single-Chip, Half-Duplex Modem Overlays 1200bps FSK Digital Communication on Top of Installed 4mA–20mA Current Loop Infrastructure
  • Digital Signal Processing Provides Reliable Input Signal Detection in Noisy Conditions
  • Standard Component 3.6864MHz Crystal Reduces System Cost
  • Fully Tested and Verified as a HART-Registered Modem IC
  • Integrated Solution Requires Minimal Power and Space
    • 2.7V to 3.6V Operating Voltage
    • 285µA (max) Current Consumption
    • Space-Saving, 5mm x 5mm x 0.8mm, 20-Pin TQFN Package
    • Few External Components Required
Additional Details
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The DS8500 is a single-chip modem with Highway Addressable Remote Transducer (HART) capabilities. It has been fully tested and verified and has received a HART® Certificate of Registration. The device integrates the modulation and demodulation of the 1200Hz/2200Hz FSK signal, has very low power consumption, and needs only a few external components due to the integrated digital signal processing. The input signal is sampled by an analog-to-digital converter (ADC), followed by a digital filter/demodulator. This architecture ensures reliable signal detection in noisy environments. The output digital-to-analog converter (DAC) generates a sine wave and provides a clean signal with phase- continuous switching between 1200Hz and 2200Hz. Low power is achieved by disabling the receive circuits during transmit and vice versa. The DS8500 is ideal for low-power process control transmitters.

Applications

  • 4-20mA Loop-Powered Transmitters for Temperature, Pressure, Flow, and Level Measurement
  • HART Modem Interface Connectivity
  • HART Multiplexers
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file View Data Sheet (Rev.3)
Documentation View All Documentation
Part Models 2
1ku List Price Starting From $6.23
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DS8500

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Data Sheet

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UPDATED 04/06/2020
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DS8500: HART Modem Data Sheet (Rev.3)

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Reliability Data

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UPDATED 01/12/2023
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DS8500 Reliability Data redirect icon

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Documentation

Documentation

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 Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
DS8500-JND+ 20-LFCSP-5X5X0.75 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
DS8500-JND+T&R 20-LFCSP-5X5X0.75 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

DS8500-KIT

Evaluation Kit for the DS8500

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DS8500-KIT

Evaluation Kit for the DS8500

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DS8500-KIT
Evaluation Kit for the DS8500

Features and Benefits

  • The EV Kit Provides Fast and Simple Evaluation by Providing a Total HART Communications Chain on Board
  • Example HART Master and Field Device Circuits Demonstrate Usage in the Two Most Common HART Connection Configurations
  • HART Registered Modem IC
  • On-Board Isolated 4mA–20mA Communications Loop
  • MAXQ622 USB Microcontroller with Demo Firmware
  • External Connections Allow for Advanced Evaluation of the DS8500 in Other Configurations
Buy Now View Details

Product Detail

The DS8500 evaluation kit (EV kit) provides a convenient and a quick platform to evaluate the DS8500 HART® modem. It allows quick evaluation through a demonstration mode and in-depth evaluation using HART Communication Foundation (a part of FieldComm Group) tools.

Applications

  • 4-20mA Loop-Powered Transmitters for Temperature, Pressure, Flow, and Level Measurement
  • HART Modem Interface Connectivity
  • HART Multiplexers

Evaluation Kits1

DS8500-KIT

Evaluation Kit for the DS8500
Reference Designs

Reference Designs 1

MAXREFDES16

MAXREFDES16

Novato (MAXREFDES16#): 4-20mA Loop-Powered Temperature Sensor with HART

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MAXREFDES16

Novato (MAXREFDES16#): 4-20mA Loop-Powered Temperature Sensor with HART

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MAXREFDES16
Novato (MAXREFDES16#): 4-20mA Loop-Powered Temperature Sensor with HART

Features and Benefits

  • 2-, 3-, or 4-wire RTD sensor input
  • -200°C to +850°C measured temperature range
  • -40°C to +85°C operating range
  • 0.03°C temperature resolution
  • < 0.05% span error or ±0.2°C at +23°C (whichever is greater)
  • < 0.1% span error or ±1.0°C over operating range
  • 12V to 40V supply voltage range
  • 200µA RTD excitation current
  • Auto compensation of wire resistance for 3-wire RTD
  • 4–20mA current loop output
  • 10Ω to 1kΩ loop load
  • Highway addressable remote transducer (HART) communication protocol requires minimum load of 230Ω
  • Sensor burnout detection
  • NAMUR down scale: < 3.2mA
  • NAMUR up scale: programmable from 20.5mA to > 24mA
  • Loop current limiter: 30mA ±5mA
  • HART protocol compatible
View Detailed Reference Design external link

Part Used 7

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Design & Integration Tools

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Reference Designs1

MAXREFDES16

MAXREFDES16

Novato (MAXREFDES16#): 4-20mA Loop-Powered Temperature Sensor with HART

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