TDA8295 Datasheet, PDF (61/77 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(SC1)
first sound carrier weighted
signal-to-noise ratio
via external SSIF sound
demodulator in Dual mode;
“ITU-R BS.468-4”; FM mode
related to 27 kHz deviation
before pre-emphasis; 10 %
residual PC
black picture
60
64
- dB
flat field white picture
60
64
- dB
6 kHz sine wave picture
54
58
- dB
250 kHz square wave
55
59
- dB
picture
crosshatch picture
54
58
- dB
color bar picture
59
63
- dB
via SSIF sound demodulator;
“ITU-R BS.468-4”; AM;
m = 54 %; 3 % residual PC
black picture
40
43
- dB
flat field white picture
40
43
- dB
color bar picture
40
43
- dB
(S/N)_w(SC2)
second sound carrier
weighted signal-to-noise
ratio
via external SSIF sound
demodulator in Dual mode;
“ITU-R BS.468-4”; FM mode
related to 27 kHz deviation
before pre-emphasis; 10 %
residual PC
black picture
58
62
- dB
flat field white picture
58
62
- dB
6 kHz sine wave picture
54
58
- dB
250 kHz square wave
46
50
- dB
picture
crosshatch picture
56
60
- dB
color bar picture
57
61
- dB
(S/N)_w
weighted signal-to-noise FM radio; via SSIF sound
60
ratio
demodulator in Mono mode;
“ITU-R BS.468-4”
64
- dB
TDA8295_1
Product data sheet
Rev. 01 — 4 February 2008
© NXP B.V. 2008. All rights reserved.
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