Datasheet

MAX5823/MAX5824/MAX5825

Ultra-Small, Octal Channel, 8-/10-/12-Bit Buffered

Output DACs with Internal Reference and I

C Interface

29Maxim Integrated

Table 10. CONFIG Command Format

Gate Configuration:

The DAC GATE setting is written by GTB (B5); GATE

operation is as follows:

GTB = 0: Enables software gating function (default), DAC

outputs are gated to their DEFAULT settings as long as

the device remains in GATE mode (set by SW_GATE_

SET and removed by SW_GATE_CLR).

GTB = 1: Disable software gating function, DAC outputs

are not impacted by GATE mode.

Load Configuration:

The LDAC_ENB setting is written by LDB (B4);

LDAC_ENB operation is as follows:

LDB = 0: DAC latch is operational, enabling LDAC and

LOAD functions (default).

LDB = 1: DAC latch is transparent, the CODE register

content controls the DAC output directly.

Clear Configuration:

CLEAR_ENB setting is written by CLB (B3); CLEAR_ENB

operation is as follows:

CLB = 0: Clear input and command functions impact the

DAC (default), clearing CODE and DAC registers to their

DEFAULT value.

CLB = 1: Clear input and command functions have no

effect on the DAC.

B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0

0 1 0 1 0 0 0 0 7 6 5 4 3 2 1 0 WC1 WC0 GTB LDB CLB X X X

CONFIG Command Reserved Multiple DAC Selection

WDOG

Config:

00:

DISABLE

01: GATE

10: CLR

11: HOLD

GATE_ENB

LDAC_ENB

CLEAR_ENB

Don’t Care

Default Value → 1 1 1 1 1 1 1 1 0 0 0 0 0 X X X

Command Byte Data High Byte Data Low Byte