TDA8844 datasheet(41/68 Pages) PHILIPS

41 / 68 page

December 16, 1997

Philips Semiconductors

Tentative Device Speciﬁcation

I2C-bus controlled PAL/NTSC/SECAM TV

processors

TDA884X/5X-N2 series

Control part

SATURATION CONTROL; NOTE 25

C.1.1

saturation control range

63 steps; see Fig.11

−−

CONTRAST CONTROL; NOTE 25

C.2.1

contrast control range

63 steps

−

C.2.2

tracking between the three

channels over a control range of

10 dB

see Fig.12

−−

0.5

BRIGHTNESS CONTROL

C.3.1

brightness control range

63 steps; see Fig.13

−±0.7

−

RGB AMPLIFIERS (PINS 19, 20 AND 21)

C.4.1

output signal amplitude

(peak-to-peak value)

at nominal luminance input

signal, nominal contrast and

white-point adjustment;

tbf

2.0

tbf

C.4.2

maximum signal amplitude

(black-to-white)

note 47

−

tbf

−

C.4.3

input signal amplitude (Y-input,

pin 27) at which the soft clipping

is activated

note 47

−

tbf

−

C.4.4

output signal amplitude for the

‘red’ channel (peak-to-peak

value)

at nominal settings for

contrast and saturation

control and no luminance

signal to the input (R

−Y, PAL)

tbf

2.1

tbf

C.4.5

nominal black level voltage

−

2.4

−

C.4.6

black level voltage

when black level stabilisation

is switched-off (via AKB bit)

−

2.5

−

C.4.61

black level voltage control range VSD bit active; note 48

1.8

2.5

3.2

C.4.7

width of video blanking with HBL

bit active

note 49

14.4

14.7

15.0

µs

C.4.8

control range of the

black-current stabilisation

−±1

−

C.4.9

blanking level

difference with black level,

note 47

−

-0.5

−

C.4.10

level during leakage

measurement

−

-0.1

−

C.4.11

level during “low” measuring

pulse

−

0.25

−

C.4.12

level during “high” measuring

pulse

−

0.38

−

C.4.13

adjustment range of the ratio

between the amplitudes of the

RGB drive voltage and the

measuring pulses

note 47

−±3

−

C.4.14

variation of black level with

temperature

note 5

−

1.0

−

mV/K

NUMBER

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

TDA8844 Datasheet(PDF) 41 Page - NXP Semiconductors

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