MCP4725A2T-E/CH Microchip Technology, MCP4725A2T-E/CH Datasheet - Page 39

• Manufacturer Part Number: MCP4725A2T-E/CH
• Description: DAC 1-CH Resistor-String 12-Bit 6-Pin SOT-23 T/R
• Manufacturer: Microchip Technology

Specifications of MCP4725A2T-E/CH

• Package: 6SOT-23
• Resolution: 12 Bit
• Architecture: Resistor-String
• Digital Interface Type: Serial (2-Wire, I2C)
• Number Of Outputs Per Chip: 1
• Output Type: Voltage
• Full Scale Error: ±2 %FSR
• Integral Nonlinearity Error: ±14.5 LSB
• Maximum Settling Time: 6(Typ) us
• Settling Time: 6µs
• Number Of Bits: 12
• Data Interface: I²C, Serial
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP4725DM-PTPLS - BOARD DAUGHTER PICTAIL MCP4725
• Power Dissipation (max): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MCP4725A2T-E/CH; MCP4725A2T-E/CHTR

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