DS8500-JND+T&R
Interface ICs
Technical Specifications
| Type | Description |
|---|---|
| Data Rate | 1.2 kbps |
| Interface | UART |
| Supply Current | 285uA |
| Supply Voltage | 2.7V~3.6V |
| Type | Description |
|---|---|
| Features | - |
| Operating Temperature | -40°C~+85°C |
| Quiescent Current | - |
| Package / Case | QFN-20-EP(5x5) |
Product Introduction
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.
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
Applications
- 4mA–20mA Loop-Powered Transmitters for Temperature, Pressure, Flow, and Level Measurement
- HART Multiplexers
- HART Modem Interface Connectivity
Datasheet
Alternative Parts
Common DS8500-JND+T&R alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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