TDA8844 datasheet(33/68 Pages) PHILIPS

33 / 68 page

December 16, 1997

Philips Semiconductors

Tentative Device Speciﬁcation

I2C-bus controlled PAL/NTSC/SECAM TV

processors

TDA884X/5X-N2 series

FAST BLANKING INPUT (CONTINUED)

S.3.8

suppression of external RGB

signals

notes 5 and 23; no insertion;

fi = 0 to 5 MHz

−

S.3.9

input voltage to blank the RGB

outputs to facilitate ‘On Screen

Display’ signals being applied to

the outputs

only on pin 26 (pin 38 for the

TDA 885X)

−−

COLOUR DIFFERENCE OUTPUT AND INPUT SIGNALS (PINS 29, 30, 31 AND 32); NOTE 26

S.4.1

signal amplitude (R

−Y)

(peak-to-peak value)

note 2

−

1.05

−

S.4.2

signal amplitude (B

−Y)

(peak-to-peak value)

note 2

−

1.33

−

LUMINANCE INPUTS AND OUTPUTS (PINS 27 AND 28); NOTE 26

S.5.1

output signal amplitude

(peak-to-peak value)

top sync-white

−

1.4

−

S.5.2

top sync level

−

2.0

−

S.5.3

output impedance

−

250

−Ω

Chrominance ﬁlters

CHROMINANCE TRAP CIRCUIT; NOTE 27

F.1.1

trap frequency

−

fosc

−

MHz

F.1.2

Bandwidth at fSC = 3.58 MHz

−3 dB

−

2.8

−

MHz

F.1.3

Bandwidth at fSC = 4.43 MHz

−3 dB

−

3.4

−

MHz

F.1.4

colour subcarrier rejection

at nominal peaking

−

F.1.5

trap frequency during SECAM

reception

−

4.3

−

MHz

CHROMINANCE BANDPASS CIRCUIT

F.2.1

centre frequency (CB = 0)

−

fosc

−

MHz

F.2.2

centre frequency (CB = 1)

−

1.1xfosc

−

MHz

F.2.3

bandpass quality factor

−

CLOCHE FILTER

F.3.1

centre frequency

4.26

4.29

4.31

MHz

F.3.2

Bandwidth

241

268

295

kHz

NUMBER

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

TDA8844 Datasheet(PDF) 33 Page - NXP Semiconductors

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