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參數(shù)資料
| 型號： | TK10651 |
| 廠商： | TOKO Inc. |
| 英文描述： | LOW VOLTAGE COMPANDOR |
| 中文描述： | 低壓COMPANDOR |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 124K |
| 代理商： | TK10651 |
January 2000 TOKO, Inc.
Page 7
TK10651
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
THIRD ORDER LPF CHARACTERISTICS
OUTPUT VOLTAGE vs. THIRD
ORDER LPF INPUT FREQUENCY
0.1 0.2 0.5
1
fIN (kHz)
-70
V
-60
-40
0
-50
-20
-10
10
2
5
10 20 50
-30
100
OUTPUT VOLTAGE VS. THIRD
ORDER LPF INPUT VOLTAGE
-90
VIN (dBV)
-70
V
-60
-50
-40
-30
-20
-10
0
-80 -70 -60 -50 -40 -30 -20 -10
0
VCC = 3.0 V
fIN = 1.0 kHz
USING THE COMPANDOR TO IMPROVE S/N
This section provides an example of using the compandor
to improve S/N in a narrow band FM communication
system. In the test configuration below, the compressor
modulation level was measured as a function of the input
voltage to demonstrate the improvement resulting from the
use of the compressor. An audio signal is connected into
the compressor and the output is measured with the
modulation meter connected to the external modulation
input of the FM signal generator. The compressor's refer-
ence input level was set to produce
±
3.0 kHz frequency
deviation. As shown in the graph on the right, the peak
deviation remains the same when the compressor is used,
but a wider input range is obtained. The built-in character-
istics of the IDC circuit limit the maximum frequency devia-
tion to
±
4.5 kHz.
TEST CONFIGURATION
V
TCOMP
FM IF IC
TK10487
TK10651
EXP
FM
SG
MODULATION LEVEL vs.
COMPRESSOR INPUT
0.1 0.2 0.5
1
VIN (mVrms)
0
m
±
1
3
6
2
4
5
7
2
5
1020
50 100
COMPRESSOR
VCC = 3.0 V
fMOD = 1.0 kHz
THROUGH
相關PDF資料 |
PDF描述 |
|---|---|
| TK10651M | LOW VOLTAGE COMPANDOR |
| TK10651MTL | LOW VOLTAGE COMPANDOR |
| TK10930 | AM/FM IF DETECTOR |
| TK10930VCTL | AM/FM IF DETECTOR |
| TK10930VCTR | AM/FM IF DETECTOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TK10651M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW VOLTAGE COMPANDOR |
| TK10651MTL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW VOLTAGE COMPANDOR |
| TK10651MTL/10651 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW VOLTAGE COMPANDOR |
| TK10690MTL-G | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:Compressor,Expander,Excellent Frequency Response BW Equal 20KHz |
| TK10930 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:AM/FM IF DETECTOR |
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