W78E378 Datasheet, PDF (26/38 Pages) Winbond – MONITOR MICROCONTROLLER

Preliminary W78E378/W78C378/W78C374
Three 8-bit Dynamic DACs: DAC8−DAC10
The dynamic DACs are especially used to generate parabola waveform for geometric compensation,
or to be used as static DACs. Dynamic DAC application circuit:
+Vsync ⁴⁷⁰
470
470
0.022u
Dynamic DAC
100K
VDD
10K
4.7u/16V
10K
10u/50V
V output
The following types of distoration can be compensated:
1. H size distortion:
a. PinCushion Correction (Amplitude)
b. Trapezoid (Keystone)
25%
c. CBOW (Quarter Width)
25%
d. PinCushion Correction (Corner)
e. S Curve
The PCC amplitude can be compensated against V size adjustment automatically.
The Trapzoid can be compensated against V center adjustment automatically.
2. H center distortion:
a. Pin balance (Bow)
b. Key balance (Tilt)
c. Corner balance
- 26 -