TDA8296 datasheet(4/87 Pages) NXP

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TDA8296

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Product data sheet

Rev. 1 — 3 March 2011

4 of 87

NXP Semiconductors

TDA8296

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

CVBS output

Vo(p-p)

peak-to-peak output

voltage

negative PC modulation (all standards

except L/L-accent); 75

Ω DC load;

sync-white modulation; 90 % (nominal)

0.9

1.0

1.1

positive PC modulation (L/L-accent

standard); 75

Ω DC load; sync-white

modulation; 97 % (nominal)

0.9

1.0

1.1

Bvideo(−3dB)

−3 dB video bandwidth

overall video response; CVBS equalizer

flat

all standards except M/N

4.7

4.85

MHz

M/N standard

3.8

3.9

MHz

resp(f)

frequency response

video equalizer; 8 equally spaced

settings; value at 3.9 MHz

−5

+4.5

Gdif

differential gain

“ITU-T J.63 line 330”

1.5

dif

differential phase

“ITU-T J.63 line 330”

1.0

deg

(S/N)w

weighted signal-to-noise

ratio

all standards; unified weighting filter

(“ITU-T J.61”); PC at

−6 dBFS

SSIF/mono sound output

Vo(SSIF)(RMS)

RMS SSIF output voltage

1 k

Ω DC or AC load; no modulation;

PC / SC1 = 13 dB

M standard

105

115

127

B standard

104

116

G/H standard

104

116

D/K standard

106

I standard

100

111

L standard

106

L-accent standard

106

FM radio (single carrier)

103

115

Vo(AF)(RMS)

RMS AF output voltage

1 k

Ω DC or AC load

M standard; 54 % modulation degree

(

±13.5 kHz FM deviation before

pre-emphasis)

116

135

B, G/H, I, D/K standard;

54 % modulation degree (

±27 kHz

FM deviation before pre-emphasis)

107

126

144

hr(AF)

AF headroom

before clipping; 1 k

Ω DC or AC load

M standard; related to

±25 kHz peak

deviation before pre-emphasis

B, G/H, I, D/K standard; related to

±50 kHz peak deviation before

pre-emphasis

Table 1.

Quick reference data …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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