描述 Description

A5191HRT 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 A5191HRT is pin-compatible with the SYM20C15. See the Pin Description and Functional Description sections for details on pin compatibility with the SYM20C15. The A5191HRT 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.

特性 Features

? Low power
? Optimal for intrinsically safe applications
? Bell 202 shift frequencies of 1200 Hz and 2200 Hz
? Single-chip, half-duplex 1200 bits per second FSK modem
? Transmit-signal wave shaping
? Receive band-pass filter
? Meets HART physical layer requirements
? CMOS compatible

應(yīng)用 Application

? Highway Addressable Remote Transducer (HART) field instruments and masters
? Instrumentation terminals and measurement devices

簡介

A5191HRT屬于集成電路（IC）的調(diào)制解調(diào)器-IC模塊。由制造生產(chǎn)的A5191HRT調(diào)制解調(diào)器 - IC 和模塊接口調(diào)制解調(diào)器 IC 和模塊是用于調(diào)制或解調(diào)來自電話或電纜線路的傳入信號以便從計算機傳輸?shù)钠骷?。?shù)據(jù)格式有 ASK、FSK、Bell 202、HART、V.21、V.22、V.23、V.32、V.34、V.90 和 V.92，波特率包括可選、300、1.2k、1.8k、2.4k、4.8k、9.6k、14.4k、19.2k、20k、33.6k、38.4k、56k 和 200k，安裝類型有插口式、表面貼裝型或通孔式。