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- Contact Person : Ms. Jin Guangshu
- Company Name : Microcyber Corporation
- Tel : 86-24-31217278
- Fax : 86-24-31217279
- Address : Liaoning,Shenyang,#1Building , 17-8 Wensu Street, Hunnan New District
- Country/Region : China
- Zip : 110179
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Hot Sale HT1200M Communication Controller
HART Modem ASIC(According to HCF_SPEC-54)
General Description
The HT1200M is a single-chip, CMOS modem for use in Highway Addressable Remote Transducer (HART) field instruments and masters. The modem and a few external passive components provide all of the functions needed to satisfy HART physical layer requirements including modulation, demodulation, receive filtering, carrier detect and transmit-signal shaping. The HT1200M is pin-compatible with the SYM20C15 and HT20C15.
The HT1200M uses Phase Continuous Frequency Shift Keying (FSK) at 1200 bits per second. To conserve power the receive circuits are disabled during transmit operations and vice versa. This provides the half-duplex operation used in HART communications.
Main Characteristic
Single chip
FSK modem (Semi-duplex 1200b/s)
Integrates circuit of receiving band-pass filter with circuit of sending
signal waveform and reshaping
External connection with 460.8kHz crystal or ceramic filter
Internal clock vibrator or external clock input
Operation temperature: -40-85
Voltage: 3.3V5.0V
Operation current<200uA
LQFP32 and PLCC28 package
Function Description
The HT1200M is a functional equivalent of the SYM20C15 HART Modem. It contains a transmit data modulator and signal shaper, carrier detect circuitry, analog receiver and demodulator circuitry and an oscillator, as shown in Figure 4.
Hot Sale HT1200M Communication Controller