TDA8295 Datasheet, PDF (60/77 Pages) NXP Semiconductors – Digital global standard low IF demodulator for analog TV and FM radio

NXP Semiconductors
TDA8295
Digital global standard low IF demodulator for analog TV and FM radio
Table 68. Characteristics …continued
Power supplies 3.3 V, 1.2 V; T_amb = 25 °C; PC / SC1 for L and M = 10 dB, all others 13 dB; residual picture carrier for L = 3 %,
all others 10 %; FM/AM modulation = 54 %, 1 kHz modulation frequency; measured in application PCB (see Figure 12) with
16 MHz crystal frequency, loaded with 75 Ω (CVBS) and 1 kΩ (SSIF/audio). Values are meant for ‘easy programming’
settings (recommended) except internal mono audio and IF demodulation. The low IF spectrum is delivered by a professional
downconverter.
Symbol
Parameter
Conditions
Min
Typ
Max Unit
(S/N)_w(AF)
AF weighted signal-to-noise
ratio
via internal mono sound
demodulator;
“ITU-R BS.468-4”; FM mode
related to 27 kHz deviation
before pre-emphasis; 10 %
residual PC; SC1
black picture
54
58
- dB
flat field white picture
53
57
- dB
6 kHz sine wave picture
52
56
- dB
250 kHz square wave
52
56
- dB
picture
crosshatch picture
52
56
- dB
color bar picture
54
58
- dB
via internal mono sound
demodulator;
“ITU-R BS.468-4”; AM;
m = 54 %; 3 % residual PC;
SC1
black picture
43
45
- dB
flat field white picture
43
46
- dB
color bar picture
43
46
- dB
via internal mono sound
47
demodulator;
“ITU-R BS.468-4”;
FM Radio mode
51
- dB
TDA8295_1
Product data sheet
Rev. 01 — 4 February 2008
© NXP B.V. 2008. All rights reserved.
60 of 77