MC13028A 데이터 시트보기 (PDF) - Motorola => Freescale
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MC13028A Datasheet PDF : 20 Pages
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MC13028A
Figure 8. Stereo Noise and Stereo Composite
Distortion when Mono Transmitted
10
7.0
Stereo Audio Level
0
6.0
Stereo Composite Distortion
–10
5.0
– 20
4.0
Noise
– 30 5.0 Hz to 3.0 kHz
400 Hz to 3.0 kHz
3.0
50 Hz to 3.0 kHz
– 40
100 Hz to 3.0 kHz
2.0
– 50
1.0
– 60
40
50
60
70
SIGNAL STRENGTH (dBµV)
0
80
Figure 9. R1 versus Stereo Threshold Point
1000
R1 to VCC
100
R1 to Gnd
10
46 48 50 52 54 56 58 60
STEREO THRESHOLD (dBµV)
Figure 10. Decoder Separation versus Filter
Capacitor (Pin 14) Leakage Current
50
45
40
35
30
25
20
– 600 – 400 – 200 0
200 400 600
LEAKAGE CURRENT (10–9)
Figure 11. Decoder Distortion versus Filter
Capacitor (Pin 14) Leakage Current
2.0
1.0
– 600 – 400 – 200 0
200 400 600
LEAKAGE CURRENT (10–9)
Figure 12. Low Frequency Corner
of PLL Response
Loop Filter 15 µF
4.0
Loop Filter 47 µF
0
Loop Filter 4.7 µF
– 4.0
– 8.0
–12
10
100
MODULATION FREQUENCY (Hz)
Figure 13. AGC Voltage versus
Input Signal Level
500
400
300
200
100
0
40
50
60
70
80
90
INPUT SIGNAL STRENGTH (dBµV)
MOTOROLA ANALOG IC DEVICE DATA
11
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