TK10651 TOKO, Inc, TK10651 Datasheet

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TK10651

Manufacturer Part Number
TK10651
Description
LOW VOLTAGE COMPANDOR
Manufacturer
TOKO, Inc
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
TK10651D
Manufacturer:
SAMSUNG
Quantity:
3 000
Price:
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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TK10651 Summary of contents

Page 1

... 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 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 ...

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 1.0 kHz ...

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 Pin 11 Comp Mute OFF Pin 12 Compandor Pin 13 Exp Mute OFF Page 4 TEST CIRCUIT 18000 1000 pF 1.0 µ ...

Page 5

... SUPPLY VOLTAGE (V) January 2000 TOKO, Inc 3.0 V 100 1.0 kHz 100 mV(rms TK10651 SUPPLY CURRENT vs. SUPPLY VOLTAGE NO SIGNAL (V) SUPPLY CURRENT vs. AMBIENT TEMPERATURE 3 SIGNAL 5 4 ...

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 (V) INPUT REFERENCE VOLTAGE vs. AMBIENT TEMPERATURE 3 1.0 kHz ...

Page 7

... IDC circuit limit the maximum frequency devia- tion to 4.5 kHz. TEST CONFIGURATION FM TK10651 SG COMP January 2000 TOKO, Inc 100 3.0 kHz frequency TK10651 TK10487 EXP V TK10651 OUTPUT VOLTAGE VS. THIRD ORDER LPF INPUT VOLTAGE 3 1.0 kHz -10 -20 -30 -40 -50 -60 -70 -90 -80 -70 -60 -50 -40 -30 -20 - (dBV) MODULATION LEVEL vs ...

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 the output is defined when the RF input = the graph below indicates, ...

Page 9

... The input can accommodate a variety of microphones by adjusting the gain to match the microphone's output volt- age. The user should set the gain and input level so that the output level at pin 3 is normally 300 mV (standard level). TK10651 100 k COMP ...

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 internal 10 k resistance. RECTIFIER GAIN CELL ...

Page 11

... The compressor's and expander's mute pins and the through pin (noise reduction is off) are pulled up by internal current sources, therefore they do not need an external pull up. EXP OUT Concerning the switching logic, refer to the table in the Test Circuit section DATA 17 OUT + - TK10651 11,12,13 Page 11 ...

Page 12

... Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 IC-231-TK11031 0798O0.0K Marking Information Marking TK10651 Fax: (847) 699-7864 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 January 2000 TOKO, Inc. ...

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