TDA9887 Philips Semiconductors, TDA9887 Datasheet - Page 46

• Manufacturer Part Number: TDA9887
• Description: I2C-bus controlled multistandard alignment-free IF-PLL demodulator with FM radio
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2004 Aug 25
I
IF-PLL demodulator with FM radio
(1) Signal.
(2) Noise at H-picture (CCIR weighted quasi peak).
(3) Noise at black picture (CCIR weighted quasi peak).
2
C-bus controlled multistandard alignment-free
S/N
(dB)
W
Fig.21 Audio signal-to-noise ratio as a function of picture-to-sound carrier ratio in intercarrier mode.
10
10
20
30
40
50
60
70
0
52
49
46
43
40
37
34
gain controlled operation of FM PLL
Conditions: PC/SC ratio measured at pins VIF1 and VIF2; via transformer;
27 kHz FM deviation; 50 s de-emphasis.
31
46
28
25
22
19
16
13
Product specification
PC/SC ratio
10
TDA9887
(1)
(2)
(3)
7
mhc118
4