MCP4728-E/UN Microchip Technology, MCP4728-E/UN Datasheet - Page 56

• Manufacturer Part Number: MCP4728-E/UN
• Description: IC DAC 12BIT W/I2C 10-MSOP
• Manufacturer: Microchip Technology

Specifications of MCP4728-E/UN

• Number Of Converters: 4
• Settling Time: 6µs
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Number Of Bits: 12
• Data Interface: I²C
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Number Of Dac Outputs: 4
• Resolution: 12 bit
• Interface Type: I2C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Supply Current: 110 mA
• Voltage Reference: 2.048 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP4728EV - BOARD EVAL 12BIT 4CH DAC MCP4728
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP4728
FIGURE 7-5:
DS22187E-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:
Example of Writing Fast Write Command for Various V
(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 =
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
V
V OUT C
OUT
V OUT D
OUT
=
A
B
(
--------------------------------- - G
V REF
=
=
Write Command
=
=
4096
(
----------------------------------- -
(
----------------------------------- -
Fast Mode
V DD
V DD
----------------------------------
V
V DD
-------------------------------
DD
×
001111-11111111
000111-11111111
000011-11111111
000001-11111111
4096
4096
D n
4096
4096
×
×
×
×
)
4095
1023
2047
511
x
2nd Byte
)
)
=
=
=
=
V DD
V
V DD
V DD
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
OUT
1
2
4
⎞
⎠
⎞
⎠
⎞
⎠
=
⎞
⎠
=
. V
=
=
V DD
------------ -
V DD
V
------------ -
V DD
------------ -
REF
8
DD
2
© 2010 Microchip Technology Inc.
4
–
–
–
–
= V
LSB
LSB
LSB
LSB
DD
. . . . . . .
For All Channels.
Stop
P