TDA8296 Datasheet, PDF (5/87 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 1. Quick reference data …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
THD
total harmonic distortion FM; for 50 kHz deviation before
pre-emphasis (25 kHz for M standard)
-
0.15
0.3 %
AM; m = 80 %
-
0.5
1
%
B_{AF(−3dB)}
−3 dB AF bandwidth
AM
FM
20 27
40 50
-
kHz
-
kHz
(S/N)_w(AF)
AF weighted
signal-to-noise ratio
via internal mono sound demodulator;
52 54
“ITU-R BS.468-4”; FM mode related to
27 kHz deviation before pre-emphasis;
10 % residual PC; SC1; color bar picture
-
dB
via internal mono sound demodulator; ^[2] 40 44
(audio gain +6 dB) “ITU-R BS.468-4”;
AM; m = 54 %; 3 % residual PC; SC1;
color bar picture
-
dB
[1] The pull-in range can be doubled to ±1660 kHz by I²C-bus register like described in Table 16. Then the AFC read-out has 256 steps.
[2] To set audio gain to +6 dB for internal sound demodulation, register 22h has to be programmed to 08h.
5. Ordering information
Table 2. Ordering information
Type number
Package
Name
Description
TDA8296HN
HVQFN40 plastic thermal enhanced very thin quad flat package; no leads;
40 terminals; body 6 × 6 × 0.85 mm
Version
SOT618-1
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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