TDA8295 Datasheet, PDF (55/77 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
CVBS output
V_o(p-p)
peak-to-peak output voltage
negative PC modulation (all
standards except L/L-accent);
75 Ω DC load; sync-white
modulation
65 %
-
0.7
0.9 V
90 % (nominal)
0.8
1.0
1.2 V
115 %
-
1.0
1.2 V
positive PC modulation
(L/L-accent standard);
75 Ω DC load; sync-white
modulation
65 %
-
0.7
0.9 V
97 % (nominal)
0.8
1.0
1.2 V
115 %
-
1.0
1.2 V
B_{video(−3dB)}
−3 dB video bandwidth
overall video response; CVBS
equalizer flat
all standards except M/N
4.8
4.85
- MHz
M/N standard
3.9
4.05
- MHz
α_resp(f)
frequency response
video equalizer; 8 equally
−5
spaced settings; value at
3.9 MHz
-
+4.5 dB
G_dif
differential gain
ϕ_dif
differential phase
V_stlt/V_CVBS(p-p) synchronization tilt voltage
to peak-to-peak CVBS
voltage ratio
“ITU-T J.63 line 330”
“ITU-T J.63 line 330”
-
1.5
3%
-
1.5
3 deg
-
1
2%
V_ftlt/V_CVBS(p-p) frame tilt voltage to
all standards except
-
peak-to-peak CVBS voltage L/L-accent
ratio
L/L-accent standard in peak
-
white AGC detection
1
3%
1
5%
∆V_tro/V_tro
relative transient response 2T pulse
overshoot voltage variation
[8] _-
2
5%
α_IM(blue)
intermodulation suppression carrier levels related to PC
(blue)
sync; PC = −3.2 dB;
CC = −19.2 dB; SC = −13 dB
1.1 MHz (related to
-
black-to-white in RMS,
equals CC + 3.6 dB)
64
- dB
3.3 MHz (related to CC)
-
75
- dB
TDA8295_1
Product data sheet
Rev. 01 — 4 February 2008
© NXP B.V. 2008. All rights reserved.
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