KL34018 Datasheet, PDF (1/14 Pages) IK Semicon Co., Ltd – Background noise level monitoring with long time constant

TECHNICAL DATA
LINEAR INTEGRATED CIRCUIT
VOICE SWITCHED SPEAKER PHONE CIRCUIT
KL34018
DESCRIPTION
The KL34018 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.
ORDERING INFORMATION
Device
Operating
Temperature Range
KL34018N
KL34018D
KL34018DT
TA = -25 to 85 C
KL34018N Plastic
KL34018D/DW SOIC
Package
DIP28
SOP28
SOP28
Packing
Tube
Tube
Tape & Reel
ABSOLUTE MAXIMUM RATINGS (Ta=25℃,Voltages referred to pin 22)
PARAMETER
VALUE
UNIT
V+ terminal Voltage (pin 16)
-1.0 to +12
V
CS (pin 18)
-1.0 to +12
V
Speaker amplifier Ground(pin 14)
-1.0 to +3.0
V
VLC(pin 24)
Storage temperature
-1.0 to +Vcc
V
-65 to +150
℃
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
RECOMMENDED OPERATION CONDITIONS
PARAMETER
V+ Terminal Voltage (pin 16)
CS (pin 18)
Vcc (pin 20)
VLC(pin 24)
Receive Signal(pin 27)
Microphone Signal(pin 9)
Speaker Amplifier Ground (pin 14)
Ambient Temperature
VALUE
+6.0 to +11
0 to +11
0 to 3.0
0.55VB to VB
0 to 250
0 to 5.0
-10 to +10
-25 to +85
UNIT
V
V
mA
V
mVrms
mVrms
mVdc
℃
2011, March, Rev. 01