Data Sheet S15381EJ1V0DS

11

µµµµPD161602A/B

4.2 AP Signal Timing

The driver power consumption is dependent on the high period of the AP signal because the operational amplifier in

the IC is operation and current is constantly flowing in this period. A chart indication the recommended timing of

inputting the AP signal vis-a-vis the STB signal is shown below.

Hi-Z

MIN. 10

µs

Amp driving

10 to 15

µs

SW driving

STB

AP

Note that the ideal AP signal high period differs depending on the load of the liquid crystal. The AP period must

therefore be able to be adjusted using a controller.

The AP signal can also be used as shown below. However, in these cases, be sure to perform sufficient evaluation

before use.

<When SW drive in not used>

Only the amp is driven (SW drive is not used) if one horizontal period is short (40

µs or less) or the liquid crystal

load is large (50 pF or more).

STB

AP

<When the AP signal high period is 10

µµµµs or less>

The amp drive period is shortened and the SW drive period lengthened when one horizontal period is long (100

µs

or more) and the liquid crystal load is small (20 pF).

STB

AP