TDA4881 datasheet(8/12 Pages) PHILIPS

8 / 12 page

November 1992

Philips Semiconductors

Preliminary speciﬁcation

Advanced monitor video controller

TDA4881

CHARACTERISTICS

VP = 8.0 V, Tamb = +25 °C; all voltages measured to GND (pin 4); unless otherwise speciﬁed

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage range (pin 7)

7.2

8.0

8.8

supply current (pin 7)

−

Video signal inputs

Vl(b-w)

input voltage

(black-to-white, pins 2, 5 and 8)

−

0.7

1.0

I2, 5, 8

DC current

no clamping

−0.1

−

0.1

µA

during clamping

±50

−−µA

Brightness control

input voltage range

see note 1

1.0

−

6.0

input resistance to VN1

−

Ω

∆Vbl1

black level voltage change at nominal

gain (pins 19, 16 and 13)

V1 = 1.0 V;

V3, 11 open-circuit

−−80

−

V1 = 6.0 V;

V3, 11 open-circuit

−

240

−

VN1

input voltage for nominal brightness

pin 1 open-circuit

−

2.25

−

Contrast control (see note 2)

input voltage range

see note 1

1.0

−

6.0

current

−5

−1

−µA

contrast relative to nominal contrast

V6 = 6.0 V;

V3, 11 open-circuit

−

V6 = 4.5 V;

V3, 11 open-circuit

−

V6 = 1.0 V;

V3, 11 open-circuit

−−20

−

tracking of RGB signals

2.5 V

< V

6 < 6V;

V3, 11 open-circuit

−

0.5

Gain control

V3, 11

input voltage range

see note 1

1.0

−

6.0

R3, 11

input resistance against VN3, N11

−

Ω

gain relative to nominal gain

V6 = 4.5 V; V3, 11 =6V

−

V6 = 4.5 V; V3, 11 =1V

−−4

−

VN3, N11

input voltage for nominal gain

pin 3, 11 open-circuit

−

4.6

−

Feedback input

Vint

internal reference voltage

see note 3

tbn

5.8

tbn

I18, 15, 12

output current

during output clamping

−1.5

−1.0

−0.1

µA

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