TDA8296 datasheet(55/87 Pages) NXP

55 / 87 page

TDA8296

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Product data sheet

Rev. 1 — 3 March 2011

55 of 87

NXP Semiconductors

TDA8296

Digital global standard low IF demodulator for analog TV and FM radio

Reference frequency in Oscillator mode (with a crystal)

fxtal

crystal frequency

MHz

Δf

xtal/fxtal

relative crystal frequency

variation

temperature, ageing and

spreading

±200 10−6

IF input

Vi(p-p)

peak-to-peak input voltage

for full-scale ADC input

(0 dBFS)

0.7

0.8

0.9

Ri(dif)

differential input resistance

Ci(dif)

differential input

capacitance

input voltage

operational input related to

ADC full scale; all standards;

sum of all signals

−3

dBFS

input frequency

PC / SC1

M/N standard

5.40 / 0.90 -

MHz

B standard

6.40 / 0.90 -

MHz

G/H standard

6.75 / 1.25 -

MHz

I standard

7.25 / 1.25 -

MHz

D/K standard

6.85 / 0.35 -

MHz

L standard

6.75 / 0.25 -

MHz

L-accent standard

1.25 / 7.75 -

MHz

FM radio

1.25

MHz

IF selectivity

sup(stpb)

stop-band suppression

Hilbert filter stop-band

−60

decimation filter stop-band

−40

notch for NSC (NPC for

L-accent standard)

[2]

−40

Carrier recovery FPLL

B−3dB(cl)

closed-loop

−3 dB

bandwidth

ultrawide

280

kHz

superwide

130

kHz

wide

kHz

medium

kHz

narrow

kHz

Δf

pullin

pull-in frequency range

[3] -

±830

kHz

mover(PC)

picture carrier over

modulation index

black for L/L-accent standard;

flat field white else

115

117

fstep(AFC)

AFC step frequency

128 steps

[3] 13

kHz

Table 64.

Characteristics …continued

Power supplies 3.3 V, 1.2 V; Tamb = 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 k

Ω (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

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