MCP4728-E/UN Microchip Technology, MCP4728-E/UN Datasheet - Page 39

• 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 5-8:
© 2010 Microchip Technology Inc.
Command Type Bits:
Start
S
Note 1:
(C2 C1 C0 W1 W2)
0
X X X
1
1
Multi-Write
Command
2: The user can write to the other channels by sending repeated bytes with new channel selection bits (DAC1, DAC0).
3: X is don’t care bit.
1
Note 3
Device Addressing
0
V
If UDAC = 0 or LDAC Pin = 0: V
0
OUT
0
X
2nd byte
1st byte
0
Update:
X DAC1 DAC0 UDAC A V
0 DAC1 DAC0 UDAC A V
A2 A1 A0
Multi-Write Command: Write Multiple DAC Input Registers.
Channel
Channel
Note 2
Select
Select
C2=0
2nd Byte
ACK (MCP4728)
R/W
0
C1=1
A
Repeat Bytes of the 2nd - 4th Bytes
OUT
C0=0
REF
REF
is updated after the 4th byte’s ACK is issued.
PD1 PD0 Gx D11 D10 D9 D8 A D7 D6 D5 D4 D3 D2 D1 D0 A
PD1 PD0 Gx D11 D10 D9 D8 A D7 D6 D5 D4 D3 D2 D1 D0 A
W1=0
Repeat Bytes of the 2nd - 4th Bytes
3rd Byte
3rd Byte
DAC Input Register of Selected Channel
DAC Input Register of Selected Channel
W0=0
ACK (MCP4728)
ACK (MCP4728)
MCP4728
4th Byte
4th Byte
DS22187E-page 39
P
Note 1
Note 1
Stop