Daewoo DTL-2950K, Service Manual

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CP-650 Service Manual
DTV R&D Europe 29
4.4 TDA6107AJF
The TDA6107AJF includes three video output amplifiers and is intended to drive the three
cathodes of a colour CRT directly. The device is contained in a plastic DIL-bent-SIL 9-pin
medium power(DBS9MPF) package, and uses high-voltage DMOS technology.
To obtain maximum performance, the amplifier should be used with black-current control.
4.4.1 Features
Typical bandwidth of 5.5 MHz for an output signal of 60 Vpp
High slew rate of 900V/
µ
s
No external components required
Very simple application
Single supply voltage of 200V
Internal reference voltage of 2.5 V
Fixed gain of 81.
Black-current stabilisation (BCS) circuit with voltage window from 1.8 to 6 V and current
window form 100uA to -10mA
Thermal protection
Internal protection against positive flashover discharges appearing on the CRT
4.4.2 Pin description
Pin Symbol Description
1 V
i(1)
inverting input 1
2 V
i(2)
inverting input 2
3 V
i(3)
inverting input 3
4 GND ground (fin)
5 I
om
black current measurement output
6 V
DD
supply voltage
7 V
OC(3)
cathode output 3
8 V
OC(2)
cathode output 2
9 V
OC(1)
cathode output 1