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UTCMC34018 Datasheet(数据表) 1 Page - Unisonic Technologies

部件型号  UTCMC34018
说明  VOICE SWITCHED SPEAKER-PHONE CIRCUIT
下载  14 Pages
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制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
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UTCMC34018 Datasheet(HTML) 1 Page - Unisonic Technologies

 
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UTCMC34018 LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R108-006,A
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.
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
SOP-28
ABSOLUTE MAXIMUM RATINGS(Ta=25°C,Voltages referred to pin 22)
PARAMETER
VALUE
UNIT
V+ terminal Voltage (pin 16)
+12,-1.0
V
CS (pin 18)
+12,-1.0
V
Speaker amplifier Ground(pin 14)
+3.0,-1.0
V
VLC(pin 24)
+VCC,-1.0
V
Storage temperature
-65 ~ +150
°C
RECOMMENDED OPERATION CONDITIONS
PARAMETER
VALUE
UNIT
V+ Terminal Voltage (pin 16)
+6.0 to +11
V
CS (pin 18)
0 to +11
V
Icc(pin 20)
0 to 3.0
mA
VLC(pin 24)
0.55VB to VB
V
Receive Signal(pin 27)
0 to 250
mVrms
Microphone Signal(pin 9)
0 to 5.0
mVrms
Speaker Amplifier Ground (pin 14)
-10 to +10
mVdc
Ambient Temperature
-20 to +60
°C




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