MCP4728-E/UN Microchip Technology, MCP4728-E/UN Datasheet - Page 55

• 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

FIGURE 7-4:
© 2010 Microchip Technology Inc.
Start
S 1 1 0 0 0 0 0 0 A 0 1 0 1 0 0 0 0 A 0 0 0 0 1 0 0 0 A 0 0 0 0 0 0 0 0 A
Device Addressing
for Writing
1st Byte
Sequential Write Command for Setting Test Points in
Expected Output Voltage at Each Channel:
V
V
V
V
R/W
OUT
OUT
OUT
OUT
D
C
A
B
Sequential Write
=
=
=
=
Command
V
V
V
V
DD
DD
REF
REF
×
×
×
×
----------- -
4096
----------- -
4096
----------- - G
4096
----------- - G
4096
D
D
D
D
n
n
n
n
Selecting
Channel A as
Starting Channel
=
=
UDAC
x
x
V
1 0 0 1 1 1 1 1 A 1 1 1 1 1 1 1 1 A P
V
V
V
1 0 0 1 1 0 0 0 A 0 0 0 0 0 0 0 0 A
V
0 0 0 0 1 1 1 1 A 1 1 1 1 1 1 1 1 A
REF
=
=
REF
REF
DD
DD
2.048
2.048
×
×
2048
----------- -
4096
4095
----------- -
4096
V
REF
G
G
G
×
×
X
X
X
2048
----------- - × 2
4096
4095
----------- - × 2
4096
ACK (MCP4728)
Update DAC B Input Register at this ACK pulse.
Update DAC C Input Register at this ACK pulse.
Update DAC D Input Register at this ACK pulse.
=
=
G
V
---------- -
X
DD
(
2
V
Update DAC A Input Register at this ACK pulse.
DD
=
=
V ( )
2.048
4.096
–
Dn = 4095
Dn = 2048
LSB
Dn = 4095
Figure
ACK (MCP4728)
ACK (MCP4728)
ACK (MCP4728)
Dn = 2
)
V ( )
V ( )
V ( )
7-3.
11
= 2048
MCP4728
DS22187E-page 55
Stop