Data Sheet S12694EJ2V0DS00

13

µµµµPD16680

5.3 REFERENCE VOLTAGE CIRCUIT

generate by internal breeder resister.

When external driving circuit is chosen, operational amplifier incorporated IC is Off. It is necessary to input voltage

Generally, These levels are made by external breeder resister. The display dignity of LCD declines when these

resistance values are big, it is necessary to choose the resistance value which corresponds with the LCD panel.

There is an effect that improves display dignity when connecting a capacitor with each level pins and the ground. It is

necessary to choose the condenser value which corresponds with the LCD panel.

Figure 5-3. Reference voltage circuit

R

to SEG, COM Outputs

R

to COM Output

R

to SEG Output

R

R

R

to SEG Output

−

R

to COM Output

to SEG, COM Output

Voltage follower for level voltage

+

−

+

−

+

−

+

−

+

5