General Description

The MAX5105/MAX5106 nonvolatile, quad, 8-bit digital-

to-analog converters (DACs) operate from a single

+2.7V to +5.5V supply. An internal EEPROM stores the

DAC states even after power is removed. Data from

these nonvolatile registers automatically initialize the

DAC outputs and operating states during power-up.

reference input range includes both ground and the

positive rail.

The MAX5105/MAX5106 feature a software-controlled

10µA shutdown mode and a mute state that drives the

DAC outputs to their respective REFL_ voltages. The

MAX5105 includes an asynchronous MUTE input, as

well as a RDY/BSY output that indicates the status of

the nonvolatile memory.

The MAX5105 is available in a 20-pin QSOP and 20-pin

wide SO packages, and the MAX5106 is available in a

16-pin QSOP package.

________________________Applications

Digital Gain and Offset Adjustments

Programmable Attenuators

Portable Instruments

Power-Amp Bias Control

Features

o On-Chip EEPROM Stores DAC States

o Power-On Reset Initialization of All Registers to

Prestored States

o +2.7V to +5.5V Single-Supply Operation

o Four 8-Bit DACs with Independent High and Low

Reference Inputs (MAX5105)

o Rail-to-Rail Output Buffers

o Low 1mA Supply Current

o Low Power 10µA (max) Shutdown Mode

o Small 20- or 16-Pin QSOP Package

o SPI™/QSPI™/MICROWIRE™-Compatible Serial

Interface

o Asynchronous MUTE Input (MAX5105)

o RDY/BSY Pin to Indicate Memory Status

(MAX5105)

o Wide Operating Temperature Range

(-40°C to +85°C)

Nonvolatile, Quad, 8-Bit DACs

________________________________________________________________ Maxim Integrated Products

1

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

REFH2

REFH3

OUT0

OUT1

RDY/BSY

REFH0

REFH1

TOP VIEW

OUT2

OUT3

REFL3

REFL2

DOUT

DIN

CS

CLK

12

11

9

10

REFL1

REFL0

GND

MUTE

MAX5105

20 QSOP/SOIC

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

REFH1

REFH2

REFH3

OUT0

OUT1

OUT2

OUT3

REFL1

REFL0

MAX5106

16 QSOP

REFH0

DIN

CLK

CS

DOUT

GND

Ordering Information

Pin Configurations

19-1925; Rev 1; 6/01

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.

Functional Diagram appears at end of data sheet.

Rail-to-Rail is a trademark of Nippon Motorola, Ltd.

SPI/QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

PART

TEMP RANGE

PIN-PACKAGE

MAX5105EEP

-40

°C to +85°C

20 QSOP

MAX5105EWP

-40

°C to +85°C

20 SO

MAX5106EEE

-40

°C to +85°C

16 QSOP