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ST Microelectronics
ST Microelectronics

STV5109 Datasheet

RGB High Voltage Video Amplifier


STV5109 Datasheet Preview


STV5109
RGB HIGH VOLTAGE VIDEO AMPLIFIER
s Bandwidth : 8MHz typical
s Supply Voltage : 220V typical
s Rise and Fall Time : 50ns TYPICAL
s CRT Cathode Current Outputs for Parallel or
Sequential Cut-off or Drive Adjustment
s Flashover Protection
DESCRIPTION
The STV5109 includes three video amplifiers
desi-gned with a high voltage bipolar/CMOS/
DMOS technology (BCD). It drives directly the
three cathodes and is protected against
flashovers. Thanks to its three cathode current
outputs, the STV5109 can be used with both par-
allel and sequential sampling applications.
MULTIWATT 15
(Plastic Package)
ORDER CODE: STV5109
Figure 1. PIN CONNECTIONS
Tab connected to Pin 8
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
September 2003
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BLUE FEEDBACK
BLUE CATHODE CURRENT
BLUE OUTPUT
GREEN FEEDBACK
GREEN CATHODE CURRENT
GREEN OUTPUT
RED FEEDBACK
GROUND
RED OUTPUT
RED CATHODE CURRENT
VDD HIGH VOLTAGE
RED INPUT
GREEN INPUT
VCC LOW VOLTAGE
BLUE INPUT
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Page 1

STV5109
PIN FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Function
Description
Blue Input
Input of the “blue” amplifier. It is a virtual ground with 3.85V bias voltage and 75µA
input bias current.
VCC
Green Input
Low voltage power supply, typically 12V.
Input of the “green” amplifier. It is a virtual ground with 3.85V bias voltage and 75µA
input bias current.
Red Input
Input of the “red” amplifier. It is a virtual ground with 3.85V bias voltage and 75µA
input bias current.
VDD
Red Cathode Current
High voltage power supply, typically 220V.
Provides the video processor with a copy of the DC current flowing into the red
cathode, for automatic cut-off or gain adjustment. If this control is not used, Pin 6
must be grounded.
Red Output
Ground
Output driving the red cathode. Pin 7 is internally protected against CRT arc
discharges by a diode limiting the output voltage to VDD.
Also connected to the heatsink.
Red Feedback
Output driving the feedback resistor network for the red amplifier.
Green Output
Output driving the green cathode. Pin 10 is internally protected against CRT arc
discharges by a diode limiting the output voltage to VDD.
Green Cathode Current Provides the video processor with a copy of the DC current flowing into the green
cathode, for automatic cut-off or gain adjustment. If this control is not used, Pin 11
must be grounded.
Green Feedback
Output driving the feedback resistor network for the green amplifier.
Blue Output
Blue Cathode Current
Output driving the blue cathode. Pin 13 is internally protected against CRT arc
discharges by a diode limiting the output voltage to VDD.
Provides the video processor with a copy of the DC current flowing into the blue
cathode, for automatic cut-off or gain adjustment. If this control is not used, Pin 14
must be grounded.
Blue Feedback
Output driving the feedback resistor network for the blue amplifier.
2/7
1
Page 2

Figure 2. BLOCK DIAGRAM OF EACH CHANNEL
5
15 (12, 9)
STV5109
13
(10, 7)
14
(11, 6)
2
1
(3, 4)
GND 8
REFERENCE
VOLTAGE
3/7
1
Page 3
Part Number STV5109
Manufactur ST Microelectronics
Description RGB High Voltage Video Amplifier
Total Page 7 Pages
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