Datasheet

20Maxim Integrated
MAX5713/MAX5714/MAX5715
Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and SPI Interface
CODEn Command
The CODEn command (B[23:20] = 0000) updates the
CODE register contents for the selected DAC(s). Changes
to the CODE register content based on this command will
not affect DAC outputs directly unless the LDAC is in a
low state or the DAC latch has been configured to be
transparent. Issuing the CODEn command with DAC
SELECTION = ALL DACs is equivalent to CODE_ALL
(B[23:16] = 10000000). See Table 2 and Table 3.
LOADn Command
The LOADn command (B[23:20] = 0001) updates the
DAC register content for the selected DAC(s) by upload-
ing the current contents of the CODE register. The
LOADn command can be used with DAC SELECTION =
ALL DACs to issue a software load for all DACs, which
is equivalent to the LOAD_ALL (B[23:16] = 10000001)
command. See Table 2 and Table 3.
CODEn_LOAD_ALL Command
The CODEn_LOAD_ALL command (B[23:20] = 0010)
updates the CODE register contents for the selected
DAC(s) as well as the DAC register content of all DACs.
Channels for which the CODE register content has not
been modified since the last load to DAC register or
LDAC operation will not be updated to reduce digital
crosstalk. Issuing this command with DAC_ADDRESS =
ALL is equivalent to the CODE_ALL_LOAD_ALL (B[23:16]
= 1000001x) command. The CODEn_LOAD_ALL com-
mand by definition will modify at least one CODE reg-
ister. To avoid this, use the LOADn command with DAC
SELECTION = ALL DACs or use the LOAD_ALL com-
mand. See Table 2 and Table 3.
CODEn_LOADn Command
The CODEn_LOADn command (B[23:20] = 0011) updates
the CODE register contents for the selected DAC(s) as
well as the DAC register content of the selected DAC(s).
Channels for which the CODE register content has not
been modified since the last load to DAC register or
LDAC operation will not be updated to reduce digital
crosstalk. Issuing this command with DAC SELECTION
= ALL DACs is equivalent to the CODE_ALL_LOAD_ALL
command. See Table 2 and Table 3.
CODE_ALL Command
The CODE_ALL command (B[23:16] = 10000000)
updates the CODE register contents for all DACs. See
Table 2.
LOAD_ALL Command
The LOAD_ALL command (B[23:16] = 10000001) updates
the DAC register content for all DACs by uploading the
current contents of the CODE registers. See Table 2.
CODE_ALL_LOAD_ALL Command
The CODE_ALL_LOAD_ALL command (B[23:16] =
1000001x) updates the CODE register contents for all
DACs as well as the DAC register content of all DACs.
See Table 2.
Table 3. DAC Selection
B19 B18 B17 B16 DAC SELECTED
0 0 0 0 DAC A
0 0 0 1 DAC B
0 0 1 0 DAC C
0 0 1 1 DAC D
X 1 X X ALL DACs
1 X X X ALL DACs