MAX5816 MAXIM [Maxim Integrated Products], MAX5816 Datasheet - Page 27

• Manufacturer Part Number: MAX5816
• Description: Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC with Internal Reference and I2C Interface
• Manufacturer: MAXIM [Maxim Integrated Products]

The CONFIG command allows independent configurations of the DAC. In normal mode (0), the DAC latch is operational
and responds to LOAD commands. In transparent mode (1), the DAC latch is transparent and CODE register contents
are supplied directly to the DAC outputs. See
Table 11. CONFIG Command Format
The REF command updates the global reference setting used for all DAC channels. Set B[1:0] = 00 to use an external
reference for the DACs or set B[1:0] to 01, 10, or 11 to select either the 2.500V, 2.048V, or 4.096V internal reference,
respectively.
If RF2 (B2 = 0) is set to zero (default) in the REF command, the reference will be powered down any time all DAC chan-
nels are powered down (in STANDBY mode). If RF2 is set to one, the reference will remain powered even if all DAC
channels are powered down, allowing continued operation of external circuitry. In this mode the 1µA shutdown state is
not available. See
Table 12. REF Command Format
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9
Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC
0
0
X
X
Data Default Value ➝
REF Command
Data Default Value ➝
1
1
Command Byte
Command
Command Byte
CONFIG
1
1
 Maxim Integrated Products 27
Table
1
0
12.
X
Don’t Care
X
Don’t Care
with Internal Reference and I
X
X
X
X
X
X
X
X
Table
X
X
X
X
X
X
11.
X
X
Data High Byte
Data High Byte
Don’t Care
Don’t Care
X
X
X
X
X
X
D
X
X
X
C
X
X
X
B
X
B8
X
X
B8
A
X
B7
X
X
B7
X
X
B6
Don’t Care
X
X
Don’t Care
B6
X
X
B5
X
X
B5
X
X
2
Data Low Byte
Data Low Byte
B4
C Interface
CONFIG Command
X
X
B4
X
X
MAX5816
B3
X
X
REF Command
B3
D
DAC Latch Mode
0
1 = Transparent
0 = Operational
RF2 RF1 RF0
B2
0
B2
C
0
B1
REF
Mode:
00 = Ext
01 =
2.500V
10 =
2.048V
11 =
4.096V
B1
0
B
0
B0
B0
A
0
0