MCP4725DM-PTPLS Microchip Technology, MCP4725DM-PTPLS Datasheet - Page 39

• Manufacturer Part Number: MCP4725DM-PTPLS
• Description: BOARD DAUGHTER PICTAIL MCP4725
• Manufacturer: Microchip Technology

Specifications of MCP4725DM-PTPLS

• Number Of Dac's: 1
• Number Of Bits: 12
• Outputs And Type: 1, Single Ended
• Sampling Rate (per Second): 100k ~ 3.4M
• Data Interface: I²C
• Settling Time: 6µs
• Dac Type: Voltage
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: MCP4725
• Silicon Manufacturer: Microchip
• Application Sub Type: DAC
• Kit Application Type: Data Converter
• Silicon Core Number: MCP4725
• Silicon Family Name: PICtail
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.5.5
Example 8-3
DAC voltage output to a digitally selectable current
source by adding a voltage follower and a sensor
register.
FIGURE 8-3:
© 2009 Microchip Technology Inc.
V
OUT
PROGRAMMABLE CURRENT
SOURCE
1
2
3
illustrates an example how to convert the
V
V
V
0.1 µF
MCP4725
OUT
SS
DD
SCL
SDA
Digitally Controllable Current Source.
A0
10 µF
6
5
4
V
DD
R
SENSE
I
B
R R
LOAD
V
V
DD
DD
I
L
(MASTER)
To MCU
V
OUT
I
I
Dn
L
B
=
=
=
=
V
------------------
R
I
----
β
V
L
Input Code (0 to 4095)
SENSE
DD
OUT
×
----------- -
4096
Dn
------------ -
β
β
+
1
MCP4725
DS22039D-page 39