器件名称: MC34018
功能描述: VOICE SWITCHED SPEAKER-PHONE CIRCUIT
文件大小: 182.46KB 共14页
简 介:UTC MC34018 LINEAR INTEGRATED CIRCUIT
VOICE SWITCHED SPEAKER-PHONE CIRCUIT
DESCRIPTION
The UTC MC34018 speaker-phone integrated circuit incorporates the necessary functions to produce a high quality hands-free speaker-phone system. The applications include household and office speaker-phones, intercom systems, hand free kit for mobile phones, and others.
SOP-28
FEATURES
*All necessary level detection and attenuation controls for a hand-free telephone included. *Background noise level monitoring with long time constant. *Background sound level compensation for transmit and receive levels as well as the background level. *Wide operating dynamic range through signal compression. *On-chip voltage regulators illuminate external regulators for lining operation. *Power audio amplifier for typical 100mW output (into 25 ohms)with peak limiting for speaker to minimize distortion. *Chip Select pin for active/stand by operation. *Volume control function for external volume control. *Standard 28-pin plastic DIP and SOP package.
DIP-28
ABSOLUTE MAXIMUM RATINGS(Ta=25°C,Voltages referred to pin 22)
PARAMETER
V+ terminal Voltage (pin 16) (pin 18) Speaker amplifier Ground(pin 14) VLC(pin 24) Storage temperature
CS
VALUE
+12,-1.0 +12,-1.0 +3.0,-1.0 +VCC,-1.0 -65 ~ +150
UNIT
V V V V °C
RECOMMENDED OPERATION CONDITIONS
PARAMETER
V+ Terminal Voltage (pin 16) 18) Icc(pin 20) VLC(pin 24) Receive Signal(pin 27) Microphone Signal(pin 9) Speaker Amplifier Ground (pin 14) Ambient Temperature
CS (p……
