TEA2037 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TEA2037

HORIZONTAL AND VERTICAL DEFLECTION MONITOR

STMicroelectronics 

1 2 3 4 5 6 7 8 9

Figure 3 : Line Oscillator

Phase

R5

Comparator

Output

9

R4

TEA2037A

VCC1

Figure 4 : Phase Comparator

Line

Flyback

Integrated

Flyback

current for the other part. When the line flyback and

the video signal are synchronized, the output of the

comparatoris an alternativelynegative and positive

current. The frame sync-pulse inhibits the compa-

rator to prevent frequency drift of the line oscillator

on the frame beginning.

Figure 5

VCC1

VC

Sync Pulse

11

10

Output

VC

Current

ST2

The sync-pulse drives the current in the compara-

tor. The line flyback integrated by the external

network gives on pin 11 a saw tooth, the DC offset ST1

of this saw tooth is fixed by VC. The comparator

output provides a positive current for the part of the

signal on pin 11 greater than to VC and a negative

5/9

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