Panasonic MN101C77C, F77G user manual 2 A/D Converter Recommended Example

Chapter 15 A/D Converter

15-3-3 Cautions

A/D conversion can be damaged by noise easily, therefore, anti-noise measures should be taken ad- equately .

„Anti-noise measures

To A/D input (analog input pin), add condenser near the VSS pins of micro controller.

Digital VDD

Analog VDD

VDD VSS

VREF+
AN0	Power supply
to	Digital VSS
AN6
VREF-	Analog VSS

Set near the VSS pin

Figure 15-3-2 A/D Converter Recommended Example 1

		VDD
VDD	VSS	VSS
	VREF+
	AN0	Power supply
	to
	AN6
	VREF-

Set near the VSS pin.

Figure 15-3-3 A/D Converter Recommended Example 2

XV - 16 Operation