Dual, 8-Bit, Programmable, 30mA

High-Output-Current DAC

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13

SERIAL DATA INPUT

C5

C4

C3

C2

C1

C0

D7–D0, S1 AND S0

FUNCTIONS

000000

XXXXXXXXXX

No operation.

000001

8-bit DAC data

Load DAC data to both DAC registers and both input registers from the

shift register.

000010

8-bit DAC data

Load DAC register A and input register A from the shift register.

000011

8-bit DAC data

Load DAC register B and input register B from the shift register.

000100

8-bit DAC data

Load both channel input registers from the shift register; both DAC

registers are unchanged.

000101

8-bit DAC data

Load input register A from the shift register; DAC register A is

unchanged.

000110

8-bit DAC data

Load input register B from the shift register; DAC register B is

unchanged.

000111

XXXXXXXXXX

Update both DAC registers from their corresponding input registers.

001001

XXXXXXXXXX

Update DAC register A from input register A.

001010

XXXXXXXXXX

Update DAC register B from input register B.

001011

XXXXXXXXXX

Internal reference mode.

001100

XXXXXXXXXX

External reference mode (default mode at power-up).

001101

XXXXXXXXXX

Shut down both DACs.

001110

XXXXXXXXXX

Shut down DACA.

001111

XXXXXXXXXX

Shut down DACB.

010000

XXXXXXXXXX

DACA 1mA–2mA full-scale current range mode (default mode at

power-up)

010001

XXXXXXXXXX

DACA 1.5mA–3mA full-scale current range mode.

010010

XXXXXXXXXX

DACA 2.5mA–5mA full-scale current range mode.

010011

XXXXXXXXXX

DACA 4.5mA–9mA full-scale current range mode.

010100

XXXXXXXXXX

DACA 8mA–16mA full-scale current range mode.

010101

XXXXXXXXXX

DACA 15mA–30mA full-scale current range mode.

101101

XXXXXXXXXX

Power up both channels of the DACs.

101110

XXXXXXXXXX

Power up DACA.

101111

XXXXXXXXXX

Power up DACB.

110000

XXXXXXXXXX

DACB 1mA–2mA full-scale current range mode (default mode at

power-up)

110001

XXXXXXXXXX

DACB 1.5mA–3mA full-scale current range mode.

110010

XXXXXXXXXX

DACB 2.5mA–5mA full-scale current range mode.

110011

XXXXXXXXXX

DACB 4.5mA–9mA full-scale current range mode.

110100

XXXXXXXXXX

DACB 8mA–16mA full-scale current range mode.

110101

XXXXXXXXXX

DACB 15mA–30mA full-scale current range mode.

Table 4. Command Summary