tda9808t NXP Semiconductors, tda9808t Datasheet - Page 19

• Manufacturer Part Number: tda9808t
• Description: Single Standard Vif-pll With Qss-if And Fm-pll Demodulator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1999 Jun 04
handbook, halfpage
handbook, halfpage
2.85 V
1.85 V
Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator
Fig.6
3.0 V
1.5 V
Fig.8
(dB)
S/N
75
50
25
0
0.06
60
Typical signal-to-noise ratio as a function of
IF input voltage.
Typical video signal levels on output pin 9
(sound carrier off).
0.6
40
M, N standard
20
6
10
V i (VIF)(rms) (mV)
V i (VIF)(rms) (dB)
60
0
zero carrier level
white level
black level
sync level
MED684
MHA740
600
20
19
handbook, halfpage
handbook, halfpage
SC = sound carrier, with respect to sync level.
CC = chrominance carrier, with respect to sync level.
PC = picture carrier, with respect to sync level.
(1) Signal.
(2) AM rejection.
(3) Noise.
Fig.9
(dB)
21 dB
10
10
30
50
70
SC CC
13.2 dB
30
Typical audio level, noise and AM rejection
(50% FM deviation).
BLUE
Fig.7 Input signal conditions.
(1)
(2)
(3)
50
3.2 dB
PC
70
input voltage (dB V)
21 dB
SC CC
13.2 dB
Product specification
90
YELLOW
TDA9808
MHA741
110
10 dB
PC
MHA739