TDA9886T Ver la hoja de datos (PDF) - NXP Semiconductors.

Número de pieza

componentes Descripción

fabricante

TDA9886T

I2C-bus controlled single and multistandard alignment-free IF-PLL demodulators

NXP Semiconductors. 

NXP Semiconductors

TDA9885; TDA9886

I2C-bus controlled multistandard alignment-free IF-PLL demodulators

Table 1. Quick reference data …continued

Symbol Parameter

Conditions

Min Typ Max Unit

S/NW

weighted signal-to-noise unified weighting filter (“ITU-T J.61”);

[5] 56

59

-

dB

ratio

see Figure 13

PSRRCVBS power supply ripple

rejection on pin CVBS

fripple = 70 Hz; video signal; grey level;

positive and negative modulation;

see Figure 8

20

25

-

dB

AFCstps

AFC control steepness

Audio part

definition: ∆IAFC / ∆fVIF

0.85 1.05 1.25 µA/kHz

Vo(AF)(rms) AF output voltage

(RMS value)

27 kHz FM deviation; 50 µs de-emphasis

430 540 650 mV

THD

total harmonic distortion 25 kHz FM deviation; 50 µs de-emphasis

-

0.15 0.50 %

54 % AM modulation

-

0.5 1.0 %

BAF(−3dB) −3 dB AF bandwidth

without de-emphasis; measured with

FM-PLL filter of Figure 26

80

100 -

kHz

S/NW(AF)

weighted signal-to-noise black picture; see Figure 21

ratio of audio signal

in accordance with “ITU-R BS.468-4”

50

56

-

dB

45

50

-

dB

αAM(sup)

AM suppression of

FM demodulator

referenced to 27 kHz FM deviation;

50 µs de-emphasis; AM: f = 1 kHz;

m = 54 %

40

46

-

dB

PSRRAM power supply ripple

rejection

see Figure 8

20

26

-

dB

PSRRFM power supply ripple

rejection

fripple = 70 Hz; see Figure 8

14

20

-

dB

Vo(intc)(rms) IF intercarrier output level QSS mode; SC1; SC2 off

(RMS value)

L standard; without modulation

90

140 180 mV

90

140 180 mV

intercarrier mode; PC / SC1 = 20 dB;

[6] -

75

-

mV

SC2 off

Reference frequency input; pin REF

fref

reference signal

frequency

[7] -

4

-

MHz

Vref(rms)

reference signal voltage operation as input terminal

(RMS value)

80

-

400 mV

[1] Values of video and sound parameters can be decreased at VP = 4.5 V.

[2] The sound carrier trap can be bypassed by switching the I2C-bus. In this way the full composite video spectrum appears at pin CVBS.

The amplitude is 1.1 V (p-p).

[3] Condition: luminance range (5 steps) from 0 % to 100 %.

[4] AC load; CL < 20 pF and RL > 1 kΩ. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound

carrier traps (see Figure 15 to Figure 20; H (s) is the absolute value of transfer function).

[5] S/N is the ratio of black-to-white amplitude to the noise voltage (RMS value measured on pin CVBS and tested at video black level,

‘quiet line’). Noise analyzer settings: B = 5 MHz, 200 kHz high-pass and sound carrier trap on. In case of S/NW weighted in accordance

with “ITU-T J.61”. Measurements taken for B/G standard.

[6] The intercarrier output signal at pin SIOMAD can be calculated by the following formula taking into account the internal video signal with

1.1 V (p-p) as a reference: V o(intc)(rms)

=

1.1 × ----1----- × 10r V

22

and r

=

2--1-0--

×





V-V----ii-(-(-P-S--C-C---))

(dB)

+

6

dB

±

3

dB

,

where:

----1-----

22

is the

correction term for RMS value, V-V----ii--((-P-S--C-C---)) (dB) is the sound-to-picture carrier ratio at pins VIF1 and VIF2 in dB, 6 dB is the correction term

of internal circuitry and ±3 dB is the tolerance of video output and intercarrier output Vo(intc)(rms).

TDA9885_TDA9886_3

Product data sheet

Rev. 03 — 16 December 2008

© NXP B.V. 2008. All rights reserved.

3 of 56

Share Link: