General Description

The MAX5322 dual, 12-bit, serial-interface, digital-to-ana-

log converter (DAC) provides bipolar ±5V to ±10V out-

puts from ±12V to ±15V analog power-supply voltages, or

unipolar 5V to 10V outputs from a single 12V to 15V ana-

log power-supply voltage.

The MAX5322 features excellent linearity with both inte-

gral nonlinearity (INL) and differential nonlinearity (DNL)

guaranteed to ±1 LSB (max). The device also features a

fast 10µs to 0.5 LSB settling time, and a hardware-shut-

down feature that reduces current consumption to 2.8µA.

The output goes to midscale at power-up in bipolar

mode (0V), and to zero scale at power-up in unipolar

mode (0V). A clear input (CLR) asynchronously clears

the DAC register and sets the outputs to 0V. The outputs

can be asynchronously updated with the load DAC

(LDAC) input.

The device features a fast 10MHz SPI™-/QSPI™-

/MICROWIRE™-compatible serial interface that operates

with 3V or 5V logic. Additional features include a serial-

data output (DOUT) for daisy chaining and read-back

functions. The MAX5322 requires external reference volt-

ages of 2V to 5.25V and is available in a 28-pin SSOP

package that operates over the extended (-40

°C to

+85

°C) temperature range.

Applications

Features

♦ Unipolar or Bipolar Output-Voltage Ranges

♦ Guaranteed INL ≤ ±1 LSB (max)

♦ Guaranteed Monotonic: DNL ≤ ±1 LSB (max)

♦ 10µs Settling Time to 0.5 LSB

♦ Low 2.8µA Shutdown Current

♦ Fast 10MHz SPI-/QSPI-/MICROWIRE-Compatible

Serial Interface

♦ Power-On Reset Sets DAC Output to 0V

♦ Schmitt Trigger Inputs for Direct

Optocoupler Interface

♦ Serial-Data Output Allows Daisy-Chaining

of Devices

♦ 28-Pin SSOP (8mm x 10mm)

±10V, Dual, 12-Bit, Serial, Voltage-Output DAC

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-3150; Rev 2; 10/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP RANGE

PIN-PACKAGE

MAX5322EAI

-40

°C to +85°C

28 SSOP

OUTA

SGNDA

REFA

2R

2R

12-BIT

DAC A

A1

A2

SW1

SW2

SW3

12

OUTB

SGNDB

2R

2R

12-BIT

DAC B

A3

A4

SW4

SW5

SW6

12

REFB

2R

2R

2R

2R

INPUT

REGISTERS

DAC

REGISTERS

DIN

SCLK

SERIAL INTERFACE

AND CONTROL

16-BIT SHIFT REGISTER

12

12

CS

UNI/BIPB

UNI/BIPA

SHDN

DOUT

DIGITAL

POWER

DGND

ANALOG

POWER

AGND

MAX5322

CLR

LDAC

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

Motor Control

Industrial Process

Controls

Industrial Automation

Automatic Test

Equipment (ATE)

Analog I/O Boards

Data-Acquisition Systems

Functional Diagram