Datasheet

MAX5813/MAX5814/MAX5815
Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and I
2
C Interface
23Maxim Integrated
Table 5. I
2
C Commands Summary (continued)
COMMAND B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 DESCRIPTION
CONFIG 0 1 1 0
All DACs
0 0
LD_EN
X X X X
DAC D
DAC C
DAC B
DAC A
X X X X X X X X
Sets the DAC Latch Mode of the selected DACs. Only DACS with a 1 in the selection bit are updated by the command. LD_EN = 0: DAC latch is operational (LOAD and LDAC controlled) LD_EN = 1: DAC latch is transparent
REF 0 1 1 1 0
REF
Power
0 =
DAC
1 =
ON
REF
Mode
00 = EXT
01 = 2.5V 10 = 2.0V 11 = 4.1V
X X X X X X X X X X X X X X X X
Sets the reference operating mode. REF Power (B18): 0 = Internal reference is only powered if at least one DAC is powered 1 = Internal reference is always powered
ALL DAC COMMANDS
CODE_ALL 1 0 0 0 0 0 0 0
CODE REGISTER
DATA [11:4]
CODE REGISTER
DATA [3:0]
X X X X
Writes data to all CODE registers
LOAD_ALL 1 0 0 0 0 0 0 1 X X X X X X X X X X X X X X X X
Updates all DAC latches with current CODE register data
CODE_ ALL_ LOAD_ALL
1 0 0 0 0 0 1 X
CODE REGISTER
DATA [11:4]
CODE REGISTER
DATA [3:0]
X X X X
Simultaneously writes data to all CODE registers while updating all DAC registers
NO OPERATION COMMANDS No Operation
1 0 0 1 X X X X X X X X X X X X X X X X X X X X
These commands will have no effect on the device
1 0 1 X X X X X X X X X X X X X X X X X X X X X 1 1 X X X X X X X X X X X X X X X X X X X X X X
Reserved Commands: Any commands not specifically listed above are reserved for Maxim internal use only.