Epson S1C33210 - Manual (Page 26)

2 POWER SUPPLY
A-12 EPSON S1C33210 PRODUCT PART
2.3 Power Supply for Analog Circuits (AV
DD
)
The analog power supply pin (AV DD ) is provided separately from the V DD and V DD pins in order that the digital
circuits do not affect the analog circuit (A/D converter). The AV DD pin is used to supply an analog power voltage and
the V SS pin is used as the analog ground.
Supply the same voltage level as the V DD to the AV DD pin.
AV DD = V DD , V SS = GND
Note: Be sure to supply V DD to the AV DD pin even if the analog circuit is not used.
Noise on the analog power lines decrease the A/D converting precision, so use a stabilized power supply and make
the board pattern with consideration given to that.