TDA8295_09 Datasheet, PDF (59/83 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 72. 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 15) 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
IF input
V_i(p-p)
peak-to-peak input voltage for full-scale ADC input
(0 dBFS)
1.8
2.0
2.2 V
R_i(dif)
C_i(dif)
V_i
differential input resistance
10
differential input capacitance
-
input voltage
operational input related to
−3
ADC full scale; all standards;
sum of all signals
15
- kΩ
2
3 pF
−3
−3 dBFS
f_i
input frequency
PC / SC1
M/N standard
-
5.75 / 1.25 - MHz
B standard
-
6.75 / 1.25 - MHz
G/H standard
-
7.75 / 2.25 - MHz
I standard
-
7.75 / 1.75 - MHz
DK and L standard
-
7.75 / 1.25 - MHz
L-accent standard
-
1.25 / 7.75 - MHz
FM radio
-
1.25
- MHz
IF selectivity
α_sup(stpb)
stop-band suppression
Hilbert filter stop-band
−60
-
- dB
decimation filter stop-band
−40
-
- dB
notch for NSC (NPC for
[4] _−40
-
- dB
L-accent standard)
Carrier recovery FPLL
B_{−3dB(cl)}
closed-loop −3 dB
bandwidth
ultrawide
superwide
280
280
280 kHz
130
130
130 kHz
wide
60
60
60 kHz
medium
30
30
30 kHz
narrow
15
15
15 kHz
Δf_pullin
m_over(PC)
pull-in frequency range
picture carrier
overmodulation index
see Figure 11
black for L/L-accent standard;
flat field white else
[5] _-
115
±830
117
- kHz
-%
f_step(AFC)
AFC step frequency
128 steps
IF demodulation (video equalizer in Flat mode)
[5] ₁₃
-
- kHz
B_T(tot)
total transition bandwidth Nyquist filter; all standards
1
α_sup(stpb)
stop-band suppression
Nyquist filter; all standards
−60
video low-pass filter (M/N,
-
B/G/H, I, D/K, L/L-accent
standard)
1
1 MHz
-
- dB
−60
- dB
TDA8295_C2_2
Product data sheet
Rev. 02 — 27 November 2009
© NXP B.V. 2009. All rights reserved.
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