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ST5088 Fiches technique(PDF) 1 Page - STMicroelectronics |
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ST5088 Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 33 page ST5088 PROGRAMMABLE AUDIO FRONT END FOR DIGITAL PHONES AND ISDN TERMINALS FEATURES: Complete CODEC and FILTER system including: PCM ANALOG TO DIGITAL AND DIGITAL TO ANALOG CONVERTERS POWERFUL ANALOG FRONT END CAPA- BLE TO INTERFACE DIRECTLY: - Microphone Dynamic or Electrete - Earpiece down to 100 Ω or up to 150nF - Loudspeaker down to 50 Ω or Buzzer up to 600nF. TRANSMIT BAND-PASS FILTER ACTIVE RC NOISE FILTER RECEIVE LOW-PASS FILTER WITH SIN X/X CORRECTION MU-LAW OR A-LAW SELECTABLE COM- PANDING CODER AND DECODER PRECISION VOLTAGE REFERENCE Phones Features: DUAL SWITCHABLE MICROPHONE AMPLI- FIER INPUTS. GAIN PROGRAMMABLE: 15 dB RANGE, 1 dB STEP. LOUDSPEAKER AMPLIFIER OUTPUT. SWITCHABLE MAXIMUM GAIN: +9dB/+27dB WITH AUTOMATIC DIGITAL ANTICLIPPING SYSTEM. aTTENUATION PROGRAMMABLE: 30dB RANGE, 2dB STEP. SEPARATE EARPIECE AMPLIFIER OUTPUT. ATTENUATION PROGRAMMABLE: 15 dB RANGE, 1 dB STEP. AUXILIARY TAPE RECORDER ANALOG IN- TERFACE: Tx + Rx COMBINED OUTPUT. AUXILIARY SWITCHABLE EXTERNAL RING INPUT (EAIN). TRANSIENT SUPRESSION SIGNAL DURING POWER ON. INTERNAL PROGRAMMABLE SIDETONE CIRCUIT. ATTENUATION PROGRAMMABLE: 15 dB RANGE, 1 dB STEP, INDEPENDENT FROM Rx CONTROL. INTERNAL RING OR TONE GENERATOR IN- CLUDING DTMF TONES, SINEWAVE OR SQUAREWAVE WAVEFORMS. ATTENU- ATION PROGRAMMABLE: 27 dB RANGE, 3 dB STEP. RINGER CONTROL PROGRAMMABLE IN- TERNALLY ( µP) OR EXTERNALLY (pin AT) COMPATIBLE WITH HANDS-FREE CIRCUIT TEA7540. ON CHIP SWITCHABLE ANTI-ACOUSTIC FEED-BACK CIRCUIT (ANTI-LARSEN). General Features: EXTENDED TEMPERATURE RANGE OP- ERATION (*) –25 °C TO +85°C. EXTENDED POWER SUPPLY RANGE 5V ±10%. 60 mW OPERATING POWER (TYPICAL). 1.0 mW STANDBY POWER (TYPICAL). CMOS DIGITAL INTERFACES. SINGLE + 5V SUPPLY. DIGITAL LOOPBACK TEST MODE. PROGRAMMABLE DIGITAL AND CONTROL INTERFACES: – Digital PCM Interface associated with separate serial Control Interface MI- CROWIRE ™ compatible. – GCI interface compatible. (*) Functionality guaranteed in the range – 25 °C to +85°C; Timing and Electrical Specifications are guaranteed in the range –5 °C to +70°C. APPLICATIONS: ISDN TERMINALS. DIGITAL TELEPHONES CT2 AND GSM APPLICATIONS This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. December 1999 ® ORDERING NUMBERS: ST5088D ST5088FN PLCC28 SO28 1/33 |
Numéro de pièce similaire - ST5088 |
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Description similaire - ST5088 |
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