MAX5258/MAX5259
+3V/+5V, Low-Power, 8-Bit Octal DAC
with Rail-to-Rail Output Buffers
12 ______________________________________________________________________________________
16-BIT SERIAL WORD* LDAC FUNCTION
A2 A1 A0 C2 C1 C0 D7……D0
X X X 0 0 0 XXXXXXXX X No operation (NOP); shift data in shift registers.
X X X 0 0 1 XXXXXXXX X
Clears all input and DAC registers and sets all DAC
outputs to zero.
X X X 0 1 0 XXXXXXXX X
Software shutdown. Output buffers can be individually
shut down with zeros in the corresponding data bits.
0 X X 0 1 1 XXXXXXXX X
DOUT Phase Mode 0. DOUT transitions on the falling
edge of SCLK.
1 X X 0 1 1 XXXXXXXX X
DOUT Phase Mode 1. DOUT transitions on the rising
edge of SCLK.
X X X 1 0 0 8-bit DAC data X Loads all DACs with the same data
0001018-bit DAC data H Load input register A. All DAC outputs unchanged.
0011018-bit DAC data H Load input register B. All DAC outputs unchanged.
0101018-bit DAC data H Load input register C. All DAC outputs unchanged.
0111018-bit DAC data H Load input register D. All DAC outputs unchanged.
1001018-bit DAC data H Load input register E. All DAC outputs unchanged.
1011018-bit DAC data H Load input register F. All DAC outputs unchanged.
1101018-bit DAC data H Load input register G. All DAC outputs unchanged.
1111018-bit DAC data H Load input register H. All DAC outputs unchanged.
0001108-bit DAC data H
Load input register A. Update OUTA. All other DAC
outputs unchanged.
0011108-bit DAC data H
Load input register B. Update OUTB. All other DAC
outputs unchanged.
0101108-bit DAC data H
Load input register C. Update OUTC. All other DAC
outputs unchanged.
0111108-bit DAC data H
Load input register D. Update OUTD. All other DAC
outputs unchanged.
1001108-bit DAC data H
Load input register E. Update OUTE. All other DAC
outputs unchanged.
1011108-bit DAC data H
Load input register F. Update OUTF. All other DAC
outputs unchanged.
1101108-bit DAC data H
Load input register G. Update OUTG. All other DAC
outputs unchanged.
1111108-bit DAC data H
Load input register H. Update OUTH. All other DAC
outputs unchanged.
X X X 1 1 1 XXXXXXXX H
Software LDAC command. Updates all DACs from their
respective input registers.
Table 1. Serial-Interface Programming Commands
* The first two bits are “don’t care.”
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