mc68hc05pv8 Freescale Semiconductor, Inc, mc68hc05pv8 Datasheet - Page 99

• Manufacturer Part Number: mc68hc05pv8
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

MC68HC(8)05PV8/A — Rev. 1.9
Shunt
Resistor
NOTE:
M
Figure 7-5 Typical application: positive Vgain amplifier
Pull-up resistors on PA4–6 should be disabled when using the
operational amplifier.
•
•
•
•
Freescale Semiconductor, Inc.
V
in
For More Information On This Product,
Keep V
For precise measurements, R1 + R2 should be in the range of
50k and the V
External loads should be connected to ground, due to small
current sinking capability.
In case of V
amplifier cannot follow the input anymore) channel 6 (input)
should be converted to read the input voltage V
in
Go to: www.freescale.com
V
out
limited between V
Input/Output Ports
PA6
PA5
PA4
in
Figure 7-4 Operational Amplifier
PA6
PA5
PA4
VSS
x
out
gain
should not reach V
>= V
a
gain
DD
SS
=
(i.e. the output of the operational
and V
R2 + R1
+
–
R1
IOCFG Bit6
+
–
DD
DD
in
directly.
Input/Output Ports
Technical Data
to A/D
Port A