DS8500 Low-Power, Single-Chip HART Modem
Version
1
Registered Product Information
Manufacturer:
Analog Devices
Product Name:
DS8500 Low-Power, Single-Chip HART Modem
Product Description:
Modem IC
Protocol:
HART
Category:
Modem IC
Profile:
HART Field Device
More Information:
The DS8500 is a HART-registered single-chip modem IC ideal for low-power
process-control transmitters. Power consumption is reduced by dynamically
disabling the transmit or receive circuitry when not in use.
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.
Features
* Single-Chip, Half-Duplex, 1200bps FSK Modulation and Demodulation
* Digital Signal Processing Provides Reliable Input Signal Detection in
Noisy Conditions
* Sinusoidal Output Signal with Lowest Harmonic Distortion
* Few External Components Enable a Space-Saving Solution
* Standard Component 3.6864MHz Crystal
* Complies to HART Physical Layer Requirements
* 2.7V to 3.6V Operating Voltage
* 285µA (max) Current Consumption
* Space-Saving, 5mm x 5mm x 0.8mm, 20-Pin TQFN
Applications
* 420mA Loop-Powered Transmitters for Temperature, Pressure, Flow, and
Level Measurement
* HART Multiplexers
* HART Modem Interface Connectivity
Registered Product Details
Manufacturer ID (hex):
00607D
Device Type ID (hex):
E1FF
DEV_REV (hex):
0x01
Technology Version:
7
Wireless Product:
No
Registration Information
Registration Authority:
FieldComm Group
Registration Status:
Registered