Daewoo CP-520, Руководство по обслуживанию, Страница: 30 / 85

CP-520/520A/520F 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