TK10651

Manufacturer Part NumberTK10651
DescriptionLOW VOLTAGE COMPANDOR
ManufacturerTOKO, Inc
TK10651 datasheet
 
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FEATURES
Data and Voice Inputs
Data and Voice Outputs
Low Supply Current
Regulated Output
Wide Operating Voltage Range
Low Standby Current
Microphone Amplifier
IDC Circuit (Instantaneous Deviation Control)
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.
ORDERING INFORMATION
TK10651
PACKAGE CODE
M: Surface Mount
January 2000 TOKO, Inc.
LOW VOLTAGE COMPANDOR
APPLICATIONS
Portable Instrumentation
Cordless Telephones
Handy Talkies
Interphones
Amateur Radio Transceivers
INPUT AMP
EXP NF
+
EXP IN
EXP RECT
Tape/Reel Code
TO V ref
100 k
MIC AMP
+
COMP IN
Package Code
COMP NF
3.3 k
51 k
TAPE/REEL CODE
TL: Tape Left
COMP MUTE
TK10651
TK10651
20
1
FILTER OUT
FILTER IN
2
19
18
COMP OUT
3
4
17
DATA IN
5
16
C-DFC
15
COMP RECT
6
14
7
COMP NF
COMP IN
8
13
COMP REF
9
12
10
11
GND
BLOCK DIAGRAM
EXPANDER
30 k
THROUGH
SW
+
SUM
AMP
TO V ref
30 k
30 k
THROUGH
SUM
SW
AMP
+
TO V ref
TO V ref
+
100 k
100 k
100 k
V CC
EXP OUT
EXP RECT
DATA OUT
EXP NF
EXP IN
EXP REF
EXP MUTE
THROUGH
COMP MUTE
GND
COMP REF
FILTER OUT
BUF
AMP
FILTER IN
COMP OUT
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TK10651 Summary of contents