Datasheet

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.
XXX100
8-bit DAC data
X Loads all DACs with the same data
000101
8-bit DAC data
H Load input register A. All DAC outputs unchanged.
001101
8-bit DAC data
H Load input register B. All DAC outputs unchanged.
010101
8-bit DAC data
H Load input register C. All DAC outputs unchanged.
011101
8-bit DAC data
H Load input register D. All DAC outputs unchanged.
100101
8-bit DAC data
H Load input register E. All DAC outputs unchanged.
101101
8-bit DAC data
H Load input register F. All DAC outputs unchanged.
110101
8-bit DAC data
H Load input register G. All DAC outputs unchanged.
111101
8-bit DAC data
H Load input register H. All DAC outputs unchanged.
000110
8-bit DAC data
H
Load input register A. Update OUTA. All other DAC
outputs unchanged.
001110
8-bit DAC data
H
Load input register B. Update OUTB. All other DAC
outputs unchanged.
010110
8-bit DAC data
H
Load input register C. Update OUTC. All other DAC
outputs unchanged.
011110
8-bit DAC data
H
Load input register D. Update OUTD. All other DAC
outputs unchanged.
100110
8-bit DAC data
H
Load input register E. Update OUTE. All other DAC
outputs unchanged.
101110
8-bit DAC data
H
Load input register F. Update OUTF. All other DAC
outputs unchanged.
110110
8-bit DAC data
H
Load input register G. Update OUTG. All other DAC
outputs unchanged.
111110
8-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.”