TDA4882 datasheet(8/28 Pages) PHILIPS

8 / 28 page

1997 Sep 04

Philips Semiconductors

Product speciﬁcation

Advanced monitor video controller for OSD

TDA4882

10 CHARACTERISTICS

VP = 8.0 V; Tamb =25 °C; all voltages measured to GND (pin 4); note 1; see Fig.4; unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage

7.2

8.0

8.8

supply current

Video signal inputs (channels 1, 2 and 3)

Vi(b-w)

input voltage, black-to-white

−

0.7

1.0

VI(clamp)

DC voltage during input clamping

(artiﬁcial black + VBE)

2.8

3.1

3.4

DC input current

no clamping; Vi =VI(clamp);

Tamb = −20 to +70 °C

−0.05 +0.05 +0.25

µA

during clamping;

Vi =VI(clamp) + 0.7 V

120

µA

during clamping;

Vi =VI(clamp) − 0.7 V

−120

−75

−50

µA

Brightness control; note 2; Fig.5

Vi(BC)

input voltage

1.0

−

6.0

Ri(BC)

input resistance

Ω

Vi(BC)(nom)

input voltage for nominal brightness pin 1 open-circuit

2.0

2.25

2.5

∆Vbl

black-level voltage change at

voltage outputs referred to

reference black level during output

clamping (Vi(HBL) > 1.6 V) related

to output signal amplitude with

nominal 0.7 V (p-p) input signal and

nominal contrast (Vi(CC) = 4.3 V) for

any gain setting

Vi(BC) = 1.0 V

−13

−11

−9.5

Vi(BC) = 6.0 V

303437%

pin 1 open-circuit

−−

0.8

∆VBT

difference of

∆Vbl between any two

channels

−1.2

+1.2

Contrast control; note 3; Fig.6

Vi(CC)

input voltage

1.0

−

6.0

Vi(CC)(max)

maximum input voltage

−−

VP − 1V

Vi(CC)(nom)

input voltage for nominal contrast

note 4

−

4.3

−

Ii(CC)

input current

Vi(CC) = 4.3 V

−5

−1

−0.1

µA

C/Cnom

contrast relative to nominal contrast Vi(CC) = 6.0 V;

pins 3 and 11 open-circuit

2.4

3.4

−

Vi(CC) = 1.0 V;

pins 3 and 11 open-circuit

−26

−22

−19

Vi(CC)(min)

input voltage for minimum contrast

pins 3 and 11 open-circuit

−

0.7

−

∆G

track

tracking of output signals of

channels 1, 2 and 3

1V<Vi(CC) < 6 V; note 5

−

0.5

tdf(C)

delay between leading (falling)

edges of contrast voltage and

voltage output waveforms

Vi(CC) = 4.3 V to 0.7 V;

input fall time at pin 6:

tf(CC) = 2 ns; note 6; Fig.10

−

720

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