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TDA8295_09 Datasheet, PDF (67/83 Pages) NXP Semiconductors – Digital global standard low IF demodulator for analog TV and FM radio | |||
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NXP Semiconductors
TDA8295
Digital global standard low IF demodulator for analog TV and FM radio
Table 72. Characteristics â¦continued
Power supplies 3.3 V, 1.2 V; Tamb = 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 15) with
16 MHz crystal frequency, loaded with 75 Ω (CVBS) and 1 kΩ (SSIF/audio). Values are meant for âeasy programmingâ
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;
âITU-R BS.468-4â; 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;
âITU-R BS.468-4â; 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;
âITU-R BS.468-4â; 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;
âITU-R BS.468-4â
64
- dB
TDA8295_C2_2
Product data sheet
Rev. 02 â 27 November 2009
© NXP B.V. 2009. All rights reserved.
67 of 83
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