TDA9109SN View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TDA9109SN

LOW-COST DEFLECTION PROCESSOR FOR MULTISYNC MONITORS

STMicroelectronics 

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OPERATING DESCRIPTION (continued)

Figure 16 : Geometric Corrections Principle

VDCMID (3.5V)

23

Vertical Ramp VOUT

2

Parabola

Generator

2

V.Focus

Amp

EW+ Amp

VDCMID

(3.5V)

Corner

Keystone

TDA9109/SN

10

Dynamic Focus

24

EW Output

Sidepin Amp

VDCMID

(3.5V)

Parallelogram

To Horizontal

Phase

Sidepin Balance

Output Current

III.6 - E/W

EWOUT = 2.5V + K1 (VOUT - VDCMID)+ K2 (VOUT - VDCMID)2 + K3 (VOUT - VDCMID)4

K1 is adjustable by the keystone I2C register,

K2 is adjustable by the E/W amplitude I2C register,

K3 is adjustable by the corner I2C register.

III.7 - Dynamic Horizontal Phase Control

IOUT = K4 (VOUT - VDCMID)+ K5 (VOUT - VDCMID)2

K4 is adjustable by the parallelogram I2C register,

K5 is adjustable by the side pin balance I2C register.

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