TK10651 Datasheet, PDF (1/12 Pages) TOKO, Inc – LOW VOLTAGE COMPANDOR

TK10651
LOW VOLTAGE COMPANDOR
FEATURES
s Data and Voice Inputs
s Data and Voice Outputs
s Low Supply Current
s Regulated Output
s Wide Operating Voltage Range
s Low Standby Current
s Microphone Amplifier
s IDC Circuit (Instantaneous Deviation Control)
APPLICATIONS
s Portable Instrumentation
s Cordless Telephones
s Handy Talkies
s Interphones
s Amateur Radio Transceivers
DESCRIPTION
TK10651 is a noise reduction IC developed mainly for
cordless phones. It is also used for voice and data
communications. It has a built-in compressor circuit to
increase the average modulation level and an expander
circuit to reduce the noise level. The expander restores the
original dynamics of the input signal. The result is a high
quality signal transmission with low noise. Among the
many functions included, analog switching of the input and
output signal is particularly useful in cordless telephones.
Separate data input and output are provided. The audio
signal path can be muted during data transmission. The
signal path used for data transmission bypasses the com-
pressor and expander circuits.
The TK10651 is available in the SSOP-20 (MFP20)
surface mount package.
10651M
TK10651
FILTER OUT 1
FILTER IN 2
COMP OUT 3
DATA IN 4
C-DFC 5
COMP RECT 6
COMP NF 7
COMP IN 8
COMP REF 9
GND 10
BLOCK DIAGRAM
20 VCC
19 EXP OUT
18 EXP RECT
17 DATA OUT
16 EXP NF
15 EXP IN
14 EXP REF
13 _{EXP MUTE}
12 THROUGH
11 COMP MUTE
ORDERING INFORMATION
TK10651
Tape/Reel Code
Package Code
PACKAGE CODE
M: Surface Mount
TAPE/REEL CODE
TL: Tape Left
EXP NF
EXP IN
INPUT AMP
+
THROUGH
SW
EXP RECT
COMP IN
TO Vref
100 kΩ
+ ^{MIC AMP}
COMP NF
3.3 kΩ
51 kΩ
THROUGH
SW
COMP MUTE
EXPANDER
30 kΩ
+
TO Vref
SUM
AMP
30 kΩ
30 kΩ
SUM
AMP
+
TO Vref
GND
COMP REF
BUF
AMP
FILTER OUT
TO Vref
+
100 kΩ
100 kΩ
100 kΩ
FILTER IN
COMP OUT
January 2000 TOKO, Inc.
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