Datasheet

22Maxim Integrated
MAX5713/MAX5714/MAX5715
Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and SPI Interface
CONFIG Command
The CONFIG command (B[23:20] = 0110) updates the
LDAC and LOAD functions of selected DACs. Issue the
command with B16 = 0 to allow the DAC latches to oper-
ate normally or with B16 = 1 to disable the DAC latches,
making them perpetually transparent. Mode settings of
the selected DACs are updated while the mode settings
of the rest of the DACs remain unchanged; DAC(s) are
selected by bits B[11:8]. See Table 6.
REF Command
The REF command updates the global reference setting
used for all DAC channels. Set B[17:16] = 00 to use an
external reference for the DACs or set B[17:16] to 01, 10,
or 11 to select either the 2.5V, 2.048V, or 4.096V internal
reference, respectively.
If RF2 (B18) is set to zero (default) in the REF command,
the reference will be powered down any time all DAC
channels are powered down (in STANDBY mode). If RF2
(B18 = 1) 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 1FA shutdown state is not available. See Table 7.
Table 6. CONFIG Command Format
Table 7. REF Command Format
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
0 1 1 1 0 RF2 RF1 RF0 X X X X X X X X X X X X X X X X
REF Command
0 = Off in Standby 1 = On in Standby
REF Mode:
00 = EXT
01 = 2.5V
10 = 2.0V
11 = 4.0V
Don’t Care Don’t Care
Default Values ➝ 0 0 0 X X X X X X X X X X X X X X X X
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
0 1 1 0 All 0 0 LDB X X X X D C B A X X X X X X X X
CONFIG
Command
0 = Select Individual DACs
1 = Select All DACs
CONFIG
Command
0 = Normal
1 = Transparent
Don’t Care
Multiple DAC
Selection:
1 = DAC Selected
0 = DAC Not
Selected
Don’t Care
Default Values (all DACs) ➝ 0 X X X X 1 1 1 1 X X X X X X X X