MAX5258EEE+T【PDF 4/20 页】IC DAC 8BIT OCTAL 5V 16-QSOP

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Sheet目录2010

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MAX5258/MAX5259

+3V/+5V, Low-Power, 8-Bit Octal DAC

with Rail-to-Rail Output Buffers

______________________________________________________________________________________

16-BIT SERIAL WORD*

LDAC

FUNCTION

D7……D0

XXXXXXXX

No operation (NOP); shift data in shift registers.

XXXXXXXX

Clears all input and DAC registers and sets all DAC

outputs to zero.

XXXXXXXX

Software shutdown. Output buffers can be individually

shut down with zeros in the corresponding data bits.

XXXXXXXX

DOUT Phase Mode 0. DOUT transitions on the falling

edge of SCLK.

XXXXXXXX

DOUT Phase Mode 1. DOUT transitions on the rising

edge of SCLK.

100

8-bit DAC data

Loads all DACs with the same data

0101

8-bit DAC data

Load input register A. All DAC outputs unchanged.

1101

8-bit DAC data

Load input register B. All DAC outputs unchanged.

0101

8-bit DAC data

Load input register C. All DAC outputs unchanged.

1101

8-bit DAC data

Load input register D. All DAC outputs unchanged.

0101

8-bit DAC data

Load input register E. All DAC outputs unchanged.

1101

8-bit DAC data

Load input register F. All DAC outputs unchanged.

0101

8-bit DAC data

Load input register G. All DAC outputs unchanged.

1101

8-bit DAC data

Load input register H. All DAC outputs unchanged.

0110

8-bit DAC data

Load input register A. Update OUTA. All other DAC

outputs unchanged.

1110

8-bit DAC data

Load input register B. Update OUTB. All other DAC

outputs unchanged.

0110

8-bit DAC data

Load input register C. Update OUTC. All other DAC

outputs unchanged.

1110

8-bit DAC data

Load input register D. Update OUTD. All other DAC

outputs unchanged.

0110

8-bit DAC data

Load input register E. Update OUTE. All other DAC

outputs unchanged.

1110

8-bit DAC data

Load input register F. Update OUTF. All other DAC

outputs unchanged.

0110

8-bit DAC data

Load input register G. Update OUTG. All other DAC

outputs unchanged.

1110

8-bit DAC data

Load input register H. Update OUTH. All other DAC

outputs unchanged.

XXXXXXXX

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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