Datasheet

78K0/Ix2 CHAPTER 12 OPERATIONAL AMPLIFIER
R01UH0010EJ0500 Rev.5.00 401
Feb 28, 2012
12.2 Configuration of Operational Amplifier
The operational amplifier 0 consists of the following hardware.
Table 12-1. Configuration of Operational Amplifier
Item Configuration
Operational amplifier input
PGAIN pin, AMP- pin, AMP+ pin
Operational amplifier output AMPOUT pin
Control registers
Operational amplifier 0 control register (AMP0M)
A/D configuration register 0 (ADPC0)
Analog input channel specification register (ADS)
Port mode register 2 (PM2)
Port register 2 (P2)
Figure 12-1. Block Diagram of Operational Amplifier
AMP0
VG1
AMP0
VG0
OPAM
P0E
PGAEN
Operational amplifier 0 control register
(AMP0M)
AMP+/ANI2/P22
AMP-/ANI0/P20
AMP0VG0,
AMP0VG
1 bits
AMPOUT/PGAIN/ANI1/P21
AMP
_
+
_
+
PGAEN bit
PGA
Operational amplifier
To A/D converter
(analog input channel: PGA output)
To A/D converter
(analog input channel: ANI1)
Internal bus
Selector