MAX5723/MAX5724/MAX5725

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

Output DACs with Internal Reference and SPI Interface

 Maxim Integrated Products 1

General Description

The MAX5723/MAX5724/MAX5725 8-channel, low-power,

8-/10-/12-bit, voltage-output digital-to-analog converters

(DACs) include output buffers and an internal 3ppm/°C

reference that is selectable to be 2.048V, 2.500V, or

4.096V. The MAX5723/MAX5724/MAX5725 accept a

wide supply voltage range of 2.7V to 5.5V with extremely

low power (6mW) consumption to accommodate most

low-voltage applications. A precision external reference

input allows rail-to-rail operation and presents a 100kI

(typ) load to an external reference.

The MAX5723/MAX5724/MAX5725 have a fast 50MHz,

interface that operates at clock rates up to 50MHz. The

DAC output is buffered and has a low supply current

of less than 250FA per channel and a low offset error

of Q0.5mV (typ). On power-up, the MAX5723/MAX5724/

MAX5725 reset the DAC outputs to zero or midscale

based on the status of M/Z logic input, providing flex-

ibility for a variety of control applications. The internal

reference is initially powered down to allow use of an

external reference. The MAX5723/MAX5724/MAX5725

allow simultaneous output updates using software LOAD

commands or the hardware load DAC logic input (LDAC).

The MAX5723/MAX5724/MAX5725 feature a program-

mable watchdog function which can be enabled to moni-

tor the I/O interface for activity and integrity.

A clear logic input (CLR) allows the contents of the CODE

and the DAC registers to be cleared asynchronously and

simultaneously sets the DAC outputs to the program-

mable default value. The MAX5723/MAX5724/MAX5725

are available in a 20-pin TSSOP and an ultra-small,

20-bump WLP package and are specified over the -40NC

to +125NC temperature range.

Applications

Programmable Voltage and Current Sources

Gain and Offset Adjustment

Automatic Tuning and Optical Control

Power Amplifier Control and Biasing

Process Control and Servo Loops

Portable Instrumentation

Benefits and Features

S

Eight High-Accuracy DAC Channels



12-Bit Accuracy Without Adjustment



±1 LSB INL Buffered Voltage Output



Guaranteed Monotonic Over All Operating

Conditions



Independent Mode Settings for Each DAC

S

Three Precision Selectable Internal References



2.048V, 2.500V, or 4.096V

S

Internal Output Buffer



Rail-to-Rail Operation with External Reference



4.5µs Settling Time



Outputs Directly Drive 2kI Loads

S

Small 6.5mm x 4.4mm 20-Pin TSSOP or Ultra-

Small 2.5mm x 2.3mm 20-Bump WLP Package

S

Wide 2.7V to 5.5V Supply Range

S

S

Fast 50MHz 4-Wire SPI/QSPI/MICROWIRE/DSP-

Compatible Serial Interface

S

Programmable Interface Watchdog Timer

S

Pin-Selectable Power-On-Reset to Zero-Scale or

Midscale DAC Output

S

LDAC and CLR For Asynchronous DAC Control

S

Three Selectable Power-Down Output Impedances



1kI, 100kI, or High Impedance

19-6243; Rev 0; 3/12

Ordering Information appears at end of data sheet.

Functional Diagram

QSPI is a trademark of Motorola, Inc.

MICROWIRE is a registered trademark of National Semiconductor

Corporation.

EVALUATION KIT AVAILABLE

DIN

SCLK

CSB

OUT0

BUFFER

POR

WATCHDOG

TIMER

GND

DAC CONTROL LOGIC

POWER-DOWN

REF

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

DOUT

CLR

LDAC

IRQ

M/Z

SPI

SERIAL

INTERFACE

1kI

100kI

CODE

LOAD

CLEAR/

RESET

(GATE/

CLEAR/

RESET)

CODE

REGISTER

DAC

LATCH

8-/10-/12-BIT

DAC

1 OF 8 DAC CHANNELS

INTERNAL REFERENCE/

EXTERNAL BUFFER

MAX5723

MAX5724

MAX5725

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX5723.related