MAX5258 PDF VIEW DOWNLOAD, MAX5258 データシート

MAX5258 データシートの表示（PDF） - Maxim Integrated

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MAX5258

Maxim Integrated

MAX5258 Datasheet PDF : 20 Pages

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

with Rail-to-Rail Output Buffers

Load All DACs with Shift-Register Data

Don’t Care

8-Bit Data

(LDAC = X)

All eight DAC registers are updated with shift-register data. This command allows all DACs to be set to any analog

value within the reference range. This command can be used to substitute CLEAR if code 00 (hex) is programmed,

which clears all DACs. This command brings the device out of shutdown.

Load Input Register, DAC Registers Unchanged (Single Update Operation)

Address

8-Bit Data

(LDAC = X)

When performing a single update operation, A2-A0 selects the respective input register. At the rising edge of CS, the

selected input register is loaded with the current shift-register data. All DAC outputs remain unchanged. This pre-

loads individual data in the input register without changing the DAC outputs.

Load Input and DAC Registers

Address

8-Bit Data

(LDAC = X)

This command directly loads current shift-register data in the selected input and DAC registers at the rising edge of

CS. A2-A0 set the DAC address.

For example, to load all eight DAC registers simultaneously with individual settings, eight commands are required.

First perform seven single input register update operations (C2 = 1, C1 = 0, C0 = 1) for DACs A, B, C, D, E, F, and G

(C2 = 1, C1 = 0, C0 = 1). The final command loads input register H and updates all eight DAC registers from their

respective input registers. This command brings the device out of shutdown.

Software “LDAC” Command

Address

8-Bit Data

(LDAC = X)

All DAC registers are updated with the contents of their respective input registers at the rising edge of CS. This is a

synchronous software command that performs the same function as the asynchronous LDAC.

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