TEA5101A
PIN FUNCTION
N°
Function
Blue Input
Description
1
Input of the ”blue” amplifier. It is a virtual ground with 3.8V bias voltage,
15 microamperes input bias current with 14kΩ input resistance.
2
3
4
5
6
VCC
Low voltage power supply, typically 12V.
See Pin 1.
Green Input
Red Input
VDD
See Pin 1.
High voltage power supply, typically 200V.
Red Cathode Current
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.
7
Red Output
Output driving the red cathode. Pin 7 is internally protected against CRT arc
discharges by a diode limiting the output voltage to VDD
.
8
Ground
Also connected to the heat sink.
9
Red Feedback
Green Output
Output driving the feedback resistor network for the red amplifier.
10
11
12
13
14
15
See Pin 7.
See Pin 6.
See Pin 9.
See Pin 7.
See Pin 6.
See Pin 9.
Green Cathode Current
Green Feedback
Blue Output
Blue Cathode Current
Blue Feedback
BLOCK DIAGRAM OF EACH CHANNEL
VDD
5
15 (12, 9)
40kΩ
13
(10, 7)
20kΩ
0.8k
Ω
14
(11, 6)
1kΩ
2
1
2.5kΩ
35Ω
35Ω
(3, 4)
6kΩ
3pF
350Ω
1.5kΩ
GND
8
2/6
STMICROELECTRONICS [ ST ]
