HART Communication Controller

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HART Communication Controller
  • Microcyber
  • China
  • In Stock
  • 500 Sets/Month

HART Communication Controller 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. See the Pin Description and Functional Description sections for details on pin compatibility with the SYM20C15.
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.

HART Communication Controller Brief Introduction

As the modulation and demodulation controller with low power consumption, HT1200M is used for developing HART products and good at performance, cost and quality etc.

HT1200M is compatible with HT20C15 and SYM20C15.

HART Communication Controller Main Characteristic

Single chip

FSK modem (Semi-duplex 1200b/s)

Integrates circuit of receiving band-pass filter with circuit of sendingsignal 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

HART Communication ControllerHART protocol


HART Communication Controller Features

 

Can be used in designs presently using the SYM20C15 or equivalent type chip

Single-chip, half-duplex 1200 bits per second FSK modem

Bell 202 shift frequencies of 1200 Hz and 2200 Hz

3.3V-5.0V power supply

Transmit-signal wave shaping

Receive band-pass filter

Low power: optimal for intrinsically safe applications CMOS compatible

Internal oscillator requires 460.8kHz crystal or ceramic resonator

Meets HART physical layer requirements

Industrial temperature range of -40 °C to +85 °C

Available in a 28-pin PLCC and 32-pin LQFP packages

 

 

HART Communication Controller 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

 

 

Low power consumption

compatible with HT20Cl5 and SYM20Cl5

Single chip, FSK modem (Semi-duplex 1200b/s)

Integrates circuit of receiving band-pass filter

LQFP32 package

 

 

HART Communication Controller 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.

 

The internal HART modulates the transmit-signal and demodulates the receive signal. The transmit-signal shaper enables the HT1200M to transmit a HART compliant signal. The carrier is detected by comparing the receiver filter output with the difference between two external voltage references. The analog receive circuitry band-pass filters the received signal for input to the modem and the carrier detect circuitry. The oscillator provides the modem with a stable time base using either a simple external resonator or an external clock source.

 

HART Communication Controller Typical Application

hart protocol application

HART Communication Controller

HART Communication Controller HT1200M Hart Modem Typical Application


HART Communication Controller Pin Assignment

HART protocol



HART Communication Controller Parameters

hart protocol application


HART Communication Controller Dimension

Package Information

HART Communication Controller

HART protocol

hart protocol application

LQFP32

HART Communication Controller

HART protocol

PLCC28


HART Communication Controller FAQ

Q: Can I get a free electronic manual?

A: Yes, if you want it, please contact us.

 

Q: How to set the analog reference voltage?

A: This analog input sets the do operating point of the operational amplifiers and comparators and is usually selected to split the do potential between VDD and Vss. IAREF in DC Characteristics refer to Electrical Characteristics.

 

Q: Can you provided OEM service?

A: Yes, we can, such as communication board, we can also provided fieldbus development toolkit.



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