TDA8295 Datasheet, PDF (58/77 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
SSIF/mono sound output
f_o(SSIF)
SSIF output frequency
SC1 or FM radio carrier
M standard
[10]
-
4.5
- MHz
B/G/H standard
-
5.5
- MHz
I standard
-
6.0
- MHz
D/K/L/L-accent standard
-
6.5
- MHz
FM radio
-
5.5
- MHz
V_o(SSIF)(RMS) RMS SSIF output voltage
1 kΩ DC or AC load;
no modulation;
PC / SC1 = 13 dB; scaled
linearly for all other ratios
all standards except B/G/H
30
35
40 mV
B/G/H standard
27
32
37 mV
FM radio (single carrier)
460
530
610 mV
V_o(AF)(RMS) RMS AF output voltage
1 kΩ DC or AC load
M standard; 54 %
125
modulation degree
(±13.5 kHz FM deviation
before pre-emphasis)
143
165 mV
B, G/H, I, D, K standard;
125
54 % modulation degree
(±27 kHz FM deviation
before pre-emphasis)
143
165 mV
L/L-accent standard; AM;
110
m = 54 %
126
145 mV
FM radio; 30 % modulation
56
degree (±22.5 kHz FM
deviation before
pre-emphasis)
65
75 mV
high Deviation mode
487
(D/K standard China);
FM deviation before
pre-emphasis ±400 kHz;
sound level setting: −12 dB
560
644 mV
TDA8295_1
Product data sheet
Rev. 01 — 4 February 2008
© NXP B.V. 2008. All rights reserved.
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