器件名称:
ST5080
功能描述:
PIAFE PROGRAMMABLE ISDN AUDIO FRONT END
文件大小:
347.72KB 共32页
简 介:
ST5080A PIAFE PROGRAMMABLE ISDN AUDIO FRONT END ADVANCE DATA FEATURES: Complete CODEC and FILTER system including: PCM ANALOG TO DIGITAL AND DIGITAL TO ANALOG CONVERTERS POWERFUL ANALOG FRONT END CAPABLE TO INTERFACE DIRECTLY: - Microphone Dynamic, Piezo or Electrete - Earpiece down to 100 or up to 150nF - Loudspeaker down to 50 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 COMPANDING CODER AND DECODER PRECISION VOLTAGE REFERENCE Phones Features: DUAL SWITCHABLE MICROPHONE AMPLIFIER INPUTS. GAIN PROGRAMMABLE: 15 dB RANGE, 1 dB STEP. LOUDSPEAKER AMPLIFIER AUXILIARY OUTPUT. ATTENUATION PROGRAMMABLE: 30 dB RANGE, 2 dB STEP. SEPARATE EARPIECE AMPLIFIER OUTPUT. ATTENUATION PROGRAMMABLE: 15 dB RANGE, 1 dB STEP AUXILIARY SWITCHABLE EXTERNAL RING INPUT (EAIN). TRANSIENT SUPRESSION SIGNAL DURING POWER ON. INTERNAL PROGRAMMABLE SIDETONE CIRCUIT. ATTENUATION PROGRAMMABLE: 15 dB RANGE, 1 dB STEP. INTERNAL RING OR TONE GENERATOR INCLUDING DTMF TONES, SINEWAVE OR SQUAREWAVE WAVEFORMS. ATTENUATION PROGRAMMABLE: 27 dB RANGE, 3 dB STEP. COMPATIBLE WITH HANDS-FREE CIRCUIT TEA7540. ON CHIP SWITCHABLE ANTI-ACOUSTIC FEED-BACK CIRCUIT (ANTI-LARSEN). SO28 ORDERING NUMBER: ST5080D General Features: EXTENDED TEMPERATURE RANGE OPERATION (*) – 40°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 SUPPL……
