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參數(shù)資料
| 型號： | TEA7091 |
| 廠商： | 意法半導體 |
| 英文描述： | Telephone Analog Front End(電話模擬前端) |
| 中文描述： | 電話模擬前端（電話模擬前端） |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 109K |
| 代理商： | TEA7091 |
TEA7091
TELEPHONE ANALOG FRONT END
PRODUCT PREVIEW
FEATURES:
SPEECH
DC LINE CURRENT RANGE FROM 6 TO
110mA
Tx AND Rx GAIN EXTERNALLY ADJUST-
ABLE
AGC IN Tx AND Rx EXTERNALLY PRO-
GRAMMABLE
AGC DISABLEABLE THROUGH MICROCON-
TROLLER BUS
SINGLE/DOUBLE
SIDETONE
SOFTWARE PROGRAMMABLE
SOFTCLIPPING ON Tx CHANNEL
SQUELCH TO REDUCE Tx NOISE ENVI-
ROMENT AND TO IMPROVE HOWLING IM-
MUNITY IN LOUDHEARING MODE
RECEIVING AMPLIFIER FOR PIEZO OR
ELECTRODYNAMIC TRANSDUCERS
+6dB MODE ON Rx CHANNEL (SELECTABLE
THROUGH MICROCONTROLLER BUS)
–6dB MODE ON Tx CHANNEL (SELECTABLE
THROUGH MICROCONTROLLER BUS)
FREQUENCY GENERATOR FOR WAITING
MELODY
ERROR BEEP GENERATOR
HOLD LINE CURRENT DETECTOR FOR
TRANSFER/ AUTO RELEASE
GROUP LISTENING / ON-HOOK DIALING
ANTI HOWLING WITH ACOUSTIC FEED-
BACK SYSTEM COUPLED WITH SQUELCH
DIGITAL VOLUME CONTROL (8 STEPS OF
4dB EACH) THROUGH MICROCONTROL-
LER BUS
ANTILARSEN ATTENUATION (4 DIFFERENT
LEVELS) PROGRAMMABLE THROUGH MI-
CROCONTROLLER BUS
HANDSFREE INTERFACE
PIN AND SOFTWARE FACILITY FOR EASY
INTERCONNECTION
CONTROLLER IC.
WITH
HANDSFREE
RING ON LOUDSPEAKER
EMBEDDED SWITCH MODE POWER SUP-
PLY TO FEED THE LOUDSPEAKER AMPLI-
FIER DURING RING MODE
DIGITAL VOLUME CONTROL (8 STEPS OF
4dB EACH) THROUGH MICROCONTROL-
LER BUS
RING FREQUENCY GENERATOR PRO-
GRAMMED THROUGH MICROCONTROL-
LER BUS
DIALLING
DTMF GENERATOR (CONTROLLED BY
MCU BUS)
DC MASK VALUE DURING MAKE PERIOD
PROGRAMMABLE THROUGH MICROCON-
TROLLER BUS
MICROCONTROLLER INTERFACE
STABILIZED VOLTAGE FOR MICROCON-
TROLLER
2 WIRE SERIAL BUS
RING INDICATOR
POWER-ON SIGNAL
RESET SIGNAL
LINE CURRENT VARIATION INDICATOR
SELF BIASED LOUDSPEAKER AMPLIFIER FOR
ANSWERING MACHINE
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
September 1993
PLCC44
PQFP44
1/7
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相關代理商/技術參數(shù) |
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|---|---|
| TEA7092 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TELEPHONE SET INTEGRATED CIRCUIT |
| TEA7092TQ | 制造商:STMicroelectronics 功能描述:SPEECH NETWORK ADVANCED 46DB 44TQFP - Trays |
| TEA7092TQT | 制造商:STMicroelectronics 功能描述:SPEECH NETWORK ADVANCED 46DB 44TQFP - Tape and Reel |
| TEA7530 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR AMPLIFIER |
| TEA7530DP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MONITOR AMPLIFIER |
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