tda8296 NXP Semiconductors, tda8296 Datasheet - Page 63

• Manufacturer Part Number: tda8296
• Description: Tda8296 Digital Global Standard Low If Demodulator For Analog Tv And Fm Radio
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 64.
Power supplies 3.3 V, 1.2 V; T
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
1 k
full scale, input frequencies as defined under row header IF input.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10] At high deviation mode at D/K standard, IF frequency has to be programmed, that SIF frequency is higher than 500 kHz
[11] To set audio gain to +6 dB for internal sound demodulation, register 22h has to be programmed to 08h.
TDA8296
Product data sheet
Symbol
PSRR
α
sup(f)L(unw)
Ω
See
Standard dependent located at 6.9 MHz, 7.9 MHz, 8.3 MHz and 9.25 MHz.
The pull-in range can be doubled to ±1 660 kHz by I
To counteract a fast IF level reduction, the digital IF AGC loop has a speed-up circuit for positive video modulation.
In the ordinary system application, this slow response is counteracted by the fast digital IF AGC loop. ADC clipping is practically avoided
by fast-attack AGC characteristic.
Graph differential gain versus temperature.
HAD: 250 ns for M standard, 200 ns for others.
The values given are measured with an IF AGC time constant of 5 Hz. For that, capacitor C7 in
instead of 2.2 nF. Doing so, the PSRR on 3.3 V together with the tuner can be improved.
SC2 is not listed, but supported for all world standards.
(default: 350 kHz).
(SSIF/audio). Operation mode set via easy programming
Section 9.3.17
Characteristics
Parameter
power supply rejection ratio f
unwanted leakage
frequency suppression
for PLL setting.
…continued
amb
= 25
Figure 22
°
C; PC/SC1 for L and M = 10 dB, all others 13 dB; nominal residual picture carrier of
Digital global standard low IF demodulator for analog TV and FM radio
All information provided in this document is subject to legal disclaimers.
and
Conditions
video signal: gray; level: 50 %;
TDA8296 stand alone
related to SSIF (SC1) in
10 MHz to 200 MHz band
wanted signal (peak-to-peak)
and unwanted signal (RMS)
ripple
FM sound; 1.2 V
FM sound; 3.3 V
AM sound; 1.2 V
AM sound; 3.3 V
Figure
2
= 70 Hz; 100 mV (p-p);
C-bus register like described in
Rev. 1 — 3 March 2011
23) with 16 MHz crystal frequency, terminated with 75
(Section
9.3.1), otherwise stated. Low IF input signal at -3dB
[8]
[8]
Table
Min
-
-
-
-
-
16. Then the AFC read-out has 256 steps.
Figure 19
Typ
80
39
40
38
51
must be chosen 220 nF
TDA8296
© NXP B.V. 2011. All rights reserved.
Max
-
-
-
-
-
Ω
(CVBS) and
Unit
dB
dB
dB
dB
dB
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