TDA8295 Datasheet, PDF (3/77 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
4. Quick reference data
Table 1. Quick reference data
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
Power supply
V_DD(1V2)
V_DD(3V3)
I_DD(tot)(1V2)
I_DD(tot)(3V3)
P_tot
supply voltage (1.2 V)
digital and analog
supply voltage (3.3 V)
digital and analog
total supply current (1.2 V)
total supply current (3.3 V)
total power dissipation
default settings; 75 Ω drive;
f_s = 54 MHz at ADC; including DAC
loads; R_RSET = 1 kΩ
Power-save mode; f_s = 54 MHz at
ADC; including DAC loads;
R_RSET = 2 kΩ; see Section 13.6
Standby mode
1.08 1.2
2.97 3.3
-
28
[1] _-
125
[1] _-
434
[2] _-
324
-
7
1.32 V
3.63 V
33
mA
136 mA
490 mW
369 mW
10
mW
IF input
V_i(p-p)
V_i
peak-to-peak input voltage for full-scale ADC input (0 dBFS)
1.8 2.0
input voltage
operational input related to ADC full
−3
−3
scale; all standards; sum of all signals
2.2 V
−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
Carrier recovery FPLL
B_{−3dB(cl)}
closed-loop −3 dB
bandwidth
wide
60
60
60
kHz
∆f_pullin
m_over(PC)
pull-in frequency range
picture carrier
overmodulation index
black for L/L-accent standard; flat field
white else
[3] _±830
115
±830
117
±830 kHz
-
%
IF demodulation (video equalizer in Flat mode)
α_sup(stpb)
stop-band suppression
video low-pass filter (M/N, B/G/H, I,
D/K, L/L-accent standard)
-
−60
-
dB
t_ripple(GDE)
group delay equalizer
ripple time
peak value for B/G/H half, D/K half,
I flat, M (FCC) full, L/L-accent full
standard
-
20
40
ns
TDA8295_1
Product data sheet
Rev. 01 — 4 February 2008
© NXP B.V. 2008. All rights reserved.
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