Maxim Integrated DS8500
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.| Part No. | DS8500 |
|---|---|
| Datasheet | DS8500 Download |
| Manufacturer |  Maxim Integrated |
| Description | HART Modem |
| Buy | Stock & Price |
GENERAL DESCRIPTION
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 phasecontinuous 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
4mA–20mA Loop-Powered Transmitters for Temperature, Pressure, Flow, and Level Measurement HART Multiplexers HART Modem Interface Connectivity Benefits andFEATURES
● 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...
