MAX5713 datasheet(21/27 Pages) MAXIM

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

Output DACs with Internal Reference and SPI Interface

MAX5713/MAX5714/MAX5715

POWER Command

The MAX5713/MAX5714/MAX5715 feature a software-

controlled power-mode (POWER) command (B[23:20] =

0100). The POWER command updates the power-mode

settings of the selected DACs while the power settings of

the rest of the DACs remain unchanged. The new power

setting is determined by bits B[17:16] while the affected

DAC(s) are selected by bits B[11:8]. If all DACs are pow-

ered down, the device enters a STANDBY mode.

In power-down, the DAC output is disconnected from

the buffer and is grounded with either one of the two

selectable internal resistors or set to high impedance.

See Table 5 for the selectable internal resistor values in

power-down mode. In power-down mode, the DAC regis-

ter retains its value so that the output is restored when the

device powers up. The serial interface remains active in

power-down mode.

In STANDBY mode, the internal reference can be pow-

ered down or it can be set to remain powered-on for

external use. Also, in STANDBY mode, devices using the

external reference do not load the REF pin. See Table 4.

SW_RESET and SW_CLEAR Command

The SW_RESET (B[23:16] = 01010001) and SW_CLEAR

(B[23:16] = 01010000) commands provide a means of

issuing a software reset or software clear operation. Use

SW_CLEAR to issue a software clear operation to return

all CODE and DAC registers to the zero-scale value. Use

SW_RESET to reset all CODE, DAC, and configuration

registers to their default values.

Table 4. POWER (100) Command Format

Table 5. Selectable DAC Output Impedance in Power-Down Mode

B23 B22 B21 B20 B19 B18 B17 B16

B15 B14 B13 B12 B11 B10 B9

PD1 PD0

POWER Command

Power

Mode:

00 =

Normal

01 = 1kI

10 =

100kI

11 = Hi-Z

Don’t Care

Multiple DAC

Selection:

1 = DAC Selected

0 = DAC Not

Selected

Don’t Care

Default Values (all DACs) ➝

PD1 (B17)

PD0 (B16)

OPERATING MODE

Normal operation

Power-down with internal 1kI pulldown resistor to GND.

Power-down with internal 100kI pulldown resistor to GND.

Power-down with high-impedance output.

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