Datasheet

MCP4728
DS22187E-page 54 © 2010 Microchip Technology Inc.
FIGURE 7-3: Using the MCP4728 for Set Point or Threshold Calibration.
10 µF
0.1 µF
Analog Outputs
V
DD
1
2
3
4
10
6
7
8
V
DD
SCL
SDA
V
SS
V
OUT
D
V
OUT
C
LDAC
RDY/BSY
9
5
V
OUT
B
V
OUT
A
MCP4728
R
1
R
2
R
3
R
4
To MCU
V
DD
Comparator 1
R
1
R
2
0.1 µF
V
TRIP
1
R
SENSE
Light
V
DD
Comparator 2
R
1
R
2
0.1 µF
V
TRIP
2
R
SENSE
Light
V
DD
Comparator 3
R
1
R
2
0.1 µF
V
TRIP
3
R
SENSE
Light
V
DD
Comparator 4
R
1
R
2
0.1 µF
V
TRIP
4
R
SENSE
Light
D
n
Input Code (0 to 4095)=
V
OUT
V
REF
D
n
4096
------------G
x
× =
V
TRIP
V
OUT
R
2
R
1
R
2
+
-------------------
⎝⎠
⎛⎞
=