TDA9882 Philips Semiconductors, TDA9882 Datasheet - Page 33

• Manufacturer Part Number: TDA9882
• Description: Alignment-free multistandard vision and QSS FM sound IF PLL demodulator
• Manufacturer: Philips Semiconductors

Philips Semiconductors
9397 750 13507
Product data sheet
Fig 18. Audio signal-to-noise ratio as a function of picture-to-sound carrier ratio in intercarrier mode.
Fig 19. Typical audio signal-to-noise ratio as a function of input signal at AM standard.
(1) Signal.
(2) Noise at H-picture (CCIR weighted quasi peak).
(3) Noise at black picture (CCIR weighted quasi peak).
(1) Signal.
(2) Noise.
S/N
(dB)
Conditions: PC/SC ratio is measured at pins VIF1 and VIF2; via transformer; 27 kHz FM deviation; 50 s de-emphasis.
Condition: m = 54 %.
W
10
10
20
30
40
50
60
70
0
52
49
S/N
(dB)
W
10
10
30
50
70
30
46
43
40
50
37
Rev. 01 — 16 November 2004
34
Multistandard vision and QSS FM sound IF PLL demodulator
gain controlled operation of FM PLL
31
70
28
25
22
90
(1)
(2)
19
V
i
(dB V)
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
16
mhc119
13
110
PC/SC ratio
TDA9882
10
www.DataSheet4U.com
(1)
(2)
(3)
7
mhc118
4
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