TK10651MTL/10651 TOKO [TOKO, Inc], TK10651MTL/10651 Datasheet

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TK10651MTL/10651

Manufacturer Part Number
TK10651MTL/10651
Description
LOW VOLTAGE COMPANDOR
Manufacturer
TOKO [TOKO, Inc]
Datasheet
1.TK10651MTL10651.pdf (12 pages)
FEATURES
DESCRIPTION
TK10651 is a noise reduction IC developed mainly for
cordless phones.
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.
January 2000 TOKO, Inc.
PACKAGE CODE
M: Surface Mount
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)
ORDERING INFORMATION
TK10651
It is also used for voice and data
TAPE/REEL CODE
TL: Tape Left
Tape/Reel Code
Package Code
APPLICATIONS
COMP MUTE
EXP RECT
COMP NF
COMP IN
EXP NF
Portable Instrumentation
Cordless Telephones
Handy Talkies
Interphones
Amateur Radio Transceivers
EXP IN
3.3 k
INPUT AMP
TO V ref
100 k
+
+
51 k
MIC AMP
LOW VOLTAGE COMPANDOR
THROUGH
SW
THROUGH
BLOCK DIAGRAM
SW
COMP RECT
FILTER OUT
COMP OUT
COMP REF
FILTER IN
COMP NF
COMP IN
TK10651
DATA IN
EXPANDER
C-DFC
30 k
GND
TO V ref
TO V ref
10
5
1
2
3
4
6
7
8
9
30 k
+
+
30 k
SUM
AMP
SUM
AMP
TK10651
100 k
100 k
TO V ref
20
19
18
17
16
15
14
13
11
12
+
100 k
AMP
BUF
EXP OUT
EXP RECT
EXP MUTE
THROUGH
COMP MUTE
V CC
DATA OUT
EXP REF
EXP NF
EXP IN
Page 1
GND
COMP REF
FILTER OUT
FILTER IN
COMP OUT

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TK10651MTL/10651 Summary of contents

Page 1

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. ...

Page 2

TK10651 ABSOLUTE MAXIMUM RATINGS Supply Voltage ......................................................... 10 V Power Dissipation (Note 1) ................................ 410 mW Junction Temperature .......................................... 150 C Operating Voltage Range .............................. 2.4 to 7.0 V TK10651 ELECTRICAL CHARACTERISTICS Test conditions 3 ...

Page 3

TK10651 ELECTRICAL CHARACTERISTICS (CONT.) Test conditions 3 1.0 kHz ...

Page 4

TK10651 1.0 µF FILTER OUT 10 k 1.0 µ FILTER IN 6800 pF 620 100 k COMPRESS OUT 10 k DATA IN 620 0.47 µF COMPRESS IN 620 4.7 µF SWITCH PIN HIGH (OPEN OR V ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS DC CHARACTERISTICS REFERENCE VOLTAGE vs. SUPPLY VOLTAGE 1.5 1.48 1.46 1.44 1.42 1 (V) REFERENCE VOLTAGE vs. AMBIENT TEMPERATURE 1.5 1.48 1.46 1.44 1.42 1.4 -40 - ...

Page 6

TK10651 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) EXPANDER AC CHARACTERISTICS (CONT.) OUTPUT REFERENCE VOLTAGE vs. AMBIENT TEMPERATURE -40 - COMPRESSOR AC CHARACTERISTICS INPUT REFERENCE VOLTAGE vs. SUPPLY VOLTAGE ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) THIRD ORDER LPF CHARACTERISTICS OUTPUT VOLTAGE vs. THIRD ORDER LPF INPUT FREQUENCY 10 0 -10 -20 -30 -40 -50 -60 -70 0.1 0.2 0 (kHz) USING THE COMPANDOR TO IMPROVE S/N ...

Page 8

TK10651 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) USING THE COMPANDOR TO IMPROVE S/N (CONT.) The improvement resulting from the expander is expressed by measuring the overall characteristics of the FM IF System (TK10487M). The signal generator was switched to internal modulation and ...

Page 9

COMPRESSOR By placing the data input pin following the compressor circuit, a data signal can be transmitted without being compressed. Audio from the microphone can be connected directly to the IC, because it passes through the built-in microphone amplifier (the ...

Page 10

TK10651 APPLICATION INFORMATION (CONT.) RECTIFIER The rectifier's smoothing capacitor pins (6 & 18), determine the smoothing characteristics and the time constants of the compressor and the expander. The time constant is deter- mined by the external capacitor value and the ...

Page 11

EXPANDER INPUT AMPLIFIER The non-inverting and inverting input pins as well as the output pins are available, and can be used as a buffer amp or filter amp. A data signal can be obtained from the output pin, without passing ...

Page 12

TK10651 SSOP-20 (MFP20) 20 AAAAA YYY KR 1 Lot No. 10.2 0.15 0.35 0.05 0. 1.0 Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified) TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Western Regional ...

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