TDA8296 Datasheet, PDF (56/87 Pages) NXP Semiconductors – Digital global standard low IF demodulator for analog TV and FM radio

NXP Semiconductors
TDA8296
Digital global standard low IF demodulator for analog TV and FM radio
Table 64. 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; nominal residual picture carrier of
3 % for L/L’ , 10 % for M, 10 % for B/G, 12.5 % for D/K, 20 % for I; FM/AM modulation = 54 %, 1 kHz modulation frequency;
measured in application PCB (see Figure 22 and Figure 23) with 16 MHz crystal frequency, terminated with 75 Ω (CVBS) and
1 kΩ (SSIF/audio). Operation mode set via easy programming (Section 9.3.1), otherwise stated. Low IF input signal at -3dB
full scale, input frequencies as defined under row header IF input.
Symbol
Parameter
Conditions
Min
Typ
Max Unit
IF demodulation (video equalizer in Flat mode)
B_T(tot)
total transition bandwidth Nyquist filter; all standards
-
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
-
MHz
-
-
dB
−60
-
dB
B_{video(−1dB)} −1 dB video bandwidth
M/N standard
-
B/G/H, I, D/K, L/L-accent
-
standard
3.8
-
MHz
4.8
-
MHz
t_ripple(GDE)
group delay equalizer ripple peak value for B/G/H half,
-
time
D/K half, I flat, M (FCC) full,
L/L-accent full standard
20
40 ns
Digital IF AGC (internal loop)
B_{−3dB(cl)}
closed-loop −3 dB
negative modulation (all
[4] ₄₀₀
-
-
Hz
bandwidth
standards except L/L-accent)
positive modulation
(L/L-accent standard)
0.2
-
-
Hz
t_resp
response time
±20 dB level change; video
settled within ±3 dB
negative modulation (all
-
standards except
L/L-accent)
3
-
ms
positive modulation
-
(L/L-accent standard)
100
-
ms
ΔG_AGC
AGC gain range
Tuner IF AGC (external loop)
−20
-
+48 dB
t_resp
response time
at 60 dBμV (RMS) PC input; ^[5]
±20 dB level change; video
settled within ±3 dB
with TDA1827x;
-
3 000
-
ms
positive modulation
with TDA1827x;
-
negative modulation
600
-
ms
f_{−3dB(lpf)}
low-pass filter −3 dB
frequency
IF AGC postfilter
0.9
1.0
1.1 kHz
TDA8296
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 3 March 2011
© NXP B.V. 2011. All rights reserved.
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