MCP4728EV Microchip Technology, MCP4728EV Datasheet - Page 56

• Manufacturer Part Number: MCP4728EV
• Description: BOARD EVAL 12BIT 4CH DAC MCP4728
• Manufacturer: Microchip Technology
• Type: D/Ar

Specifications of MCP4728EV

• Number Of Dac's: 4
• Number Of Bits: 12
• Outputs And Type: 1, Single Ended
• Data Interface: I²C
• Settling Time: 6µs
• Dac Type: Voltage
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: MCP4728
• Product: Data Conversion Development Tools
• Resolution: 12 bit
• Interface Type: I2C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP4728
• Kit Application Type: Data Converter
• Application Sub Type: DAC
• Kit Contents: Board
• For Use With/related Products: MCP4728
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP4728
FIGURE 7-5:
Channels.
DS22187A-page 56
Start
S 1 1 0 0 A2 A1 A0 0 A 0 1 1 A2 A1 A0 0 1 A 0 1 1 A2 A1 A0 1 0 A
The following example shows the expected analog outputs with the corresponding DAC input codes:
(C) Channel C Output:
Address Byte
(A) Channel A Output:
(B) Channel B Output:
(D) Channel D Output:
1st Byte
DAC A Input Code =
DAC B Input Code =
DAC C Input Code =
DAC D Input Code =
Example of Writing Fast Write Command for Various V
Dn for Channel B = 07FF (hex) = 2047 (decimal)
Dn for Channel A = 0FFF (hex) = 4095 (decimal)
Dn for Channel C = 03FF (hex) = 1023 (decimal)
Dn for Channel D = 01FF (hex) = 511 (decimal)
V OUT
V OUT A
V OUT B
V OUT C
V OUT D
=
(
--------------------------------- - G x
V REF
=
=
Write Command
=
=
4096
(
----------------------------------- -
(
----------------------------------- -
Fast Mode
V DD
V DD
V DD
----------------------------------
V DD 511
-------------------------------
×
001111-11111111
000111-11111111
000011-11111111
000001-11111111
4096
4096
D n
4096
4096
×
×
×
×
)
4095
1023
2047
2nd Byte
)
)
=
=
=
=
V DD
V DD
V DD
V DD
⎛
⎝
⎛
⎝
⎛
⎝
⎛
⎝
4096 1
-------------------- -
512 1
----------------- -
2048 1
-------------------- -
1024 1
-------------------- -
4096
4096
4096
4096
–
–
–
–
DAC A
⎞
⎠
⎞
⎠
⎞
⎠
=
⎞
⎠
=
=
=
V DD
------------ - 1
V DD 1
V DD
------------ - 1
V DD
------------ - 1
8
2
4
⎛
⎝
3rd Byte
⎛
⎝
⎛
⎝
⎛
⎝
–
Next DAC Channels
–
–
–
----------- -
4096
----------- -
4096
----------- -
4096
----------- -
4096
8
1
2
4
⎞
⎠
⎞
⎠
⎞
⎠
=
⎞
⎠
=
=
=
OUT
V DD
------------ -
V DD
V DD
------------ -
V DD
------------ -
8
2
© 2009 Microchip Technology Inc.
4
. V
–
–
–
REF
–
LSB
LSB
LSB
LSB
. . . . . . .
= V
DD
for all
Stop
P