TDA4882 データシートの表示（PDF） - Philips Electronics
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TDA4882 Datasheet PDF : 28 Pages
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Philips Semiconductors
Advanced monitor video controller for OSD
Product specification
TDA4882
1 FEATURES
• 85 MHz video controller
• Fully DC controllable
• 3 separate video channels
• Input black-level clamping
• White level adjustment for 2 channels only
• Brightness control with correct grey scale tracking
• Contrast control for all 3 channels simultaneously
• Cathode feedback to internal reference for cut-off
control, which allows unstabilized video supply voltage
• Current outputs for RGB signal currents
• RGB voltage outputs to external peaking circuits
• Blanking and switch-off input for screen protection
• Sync on green operation possible
• On Screen Display (OSD) facility.
2 GENERAL DESCRIPTION
The TDA4882 is an RGB pre-amplifier for colour monitor
systems with SVGA performance, intended for DC or AC
coupling of the colour signals to the cathodes of the CRT.
With special advantages the circuit can be used in
conjunction with the TDA485x monitor deflection IC family.
3 QUICK REFERENCE DATA
SYMBOL
VP
IP
Vi(b-w)
Vo(b-w)
PARAMETER
positive supply voltage
supply current
input voltage, black-to-white
output voltage, black-to-white
Io(b-w)
IOM
B
Gnom
output current, black-to-white
peak output current
bandwidth
nominal voltage gain
∆G
CRcontrast
COSD(min)
∆Vbl
Tamb
gain control difference for 2 channels
contrast control
minimum contrast for OSD
brightness control related to nominal
output signal amplitude
operating ambient temperature
CONDITIONS
nominal contrast;
channels 1 and 3 gain
control pins open-circuit
−3 dB
nominal contrast;
channels 1 and 3 gain
control pins open-circuit
relative to Gnom
Vi(CC) = 1 to 6 V
Vi(CC) = 0.7 V
MIN.
7.2
36
−
−
TYP.
8.0
48
0.7
0.79
MAX. UNIT
8.8 V
60
mA
1.0 V
−
V
−
50
−
mA
−
−
100 mA
70
85
−
MHz
−
1
−
dB
−5
−
+2.6 dB
−22 −
+3.4 dB
−
−40 −
dB
−11 −
+34 %
−20 −
+70 °C
4 ORDERING INFORMATION
TYPE
NUMBER
TDA4882
NAME
DIP20
PACKAGE
DESCRIPTION
plastic dual in-line package; 20 leads (300 mil)
VERSION
SOT146-1
1997 Sep 04
3
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