TDA8295 Datasheet, PDF (5/77 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
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; 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
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;
“ITU-R BS.468-4”; FM mode related to
27 kHz deviation before pre-emphasis;
10 % residual PC; SC1
color bar picture
54
58
-
dB
via internal mono sound demodulator;
“ITU-R BS.468-4”; AM; m = 54 %; 3 %
residual PC; SC1
color bar picture
43
46
-
dB
[1] 50 % ADC current; 100 % video DAC current; 50 % sound DAC current.
[2] 50 % ADC current; 50 % video DAC current; 25 % sound DAC current.
[3] 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.
5. Ordering information
Table 2. Ordering information
Type number
Package
Name
Description
TDA8295HN
HVQFN40 plastic thermal enhanced very thin quad flat package; no leads;
40 terminals; body 6 × 6 × 0.85 mm
Version
SOT618-1
TDA8295_1
Product data sheet
Rev. 01 — 4 February 2008
© NXP B.V. 2008. All rights reserved.
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