TDA4881 查看數據表（PDF） - Philips Electronics
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TDA4881 Datasheet PDF : 12 Pages
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Philips Semiconductors
Advanced monitor video controller
Preliminary specification
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
VP
supply voltage range (pin 7)
IP
supply current (pin 7)
Video signal inputs
7.2 8.0 8.8 V
−
46
56
mA
Vl(b-w)
I2, 5, 8
input voltage
(black-to-white, pins 2, 5 and 8)
DC current
no clamping
during clamping
−
0.7 1.0 V
−0.1 −
±50 −
0.1 µA
−
µA
Brightness control
V1
R1
∆Vbl1
VN1
input voltage range
see note 1
input resistance to VN1
black level voltage change at nominal V1 = 1.0 V;
gain (pins 19, 16 and 13)
V3, 11 open-circuit
V1 = 6.0 V;
V3, 11 open-circuit
input voltage for nominal brightness pin 1 open-circuit
Contrast control (see note 2)
1.0 −
6.0 V
−
50
−
kΩ
−
−80 −
mV
−
240 −
mV
−
2.25 −
V
V6
I6
Cv
Tr
Gain control
input voltage range
current
contrast relative to nominal contrast
tracking of RGB signals
see note 1
V6 = 6.0 V;
V3, 11 open-circuit
V6 = 4.5 V;
V3, 11 open-circuit
V6 = 1.0 V;
V3, 11 open-circuit
2.5 V < V6 < 6 V;
V3, 11 open-circuit
1.0 −
−5
−1
−
3
6.0 V
−
µA
−
dB
−
0
−
dB
−
−20 −
dB
−
0
0.5 dB
V3, 11
R3, 11
Gv
input voltage range
input resistance against VN3, N11
gain relative to nominal gain
VN3, N11
input voltage for nominal gain
Feedback input
see note 1
1.0 −
6.0 V
−
43
−
kΩ
V6 = 4.5 V; V3, 11 = 6 V −
2
−
dB
V6 = 4.5 V; V3, 11 = 1 V −
−4
−
dB
pin 3, 11 open-circuit
−
4.6 −
V
Vint
I18, 15, 12
internal reference voltage
output current
see note 3
tbn 5.8 tbn V
during output clamping −1.5 −1.0 −0.1 µA
November 1992
8
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