_______________General Description

The MAX503 is a low-power, 10-bit, voltage-output digital-

to-analog converter (DAC) that uses single 5V or dual ±5V

supplies. This device has an internal voltage reference plus

an output buffer amplifier. Operating current is only 250µA

from a single 5V supply, making it ideal for portable and

battery-powered applications. In addition, the shrink small-

outline package (SSOP) measures only 0.1 square inches,

using less board area than an 8-pin DIP. 10-bit resolution is

achieved through laser trimming of the DAC, op amp, and

reference. No further adjustments are necessary.

Internal gain-setting resistors can be used to define a DAC

output voltage range of 0V to +2.048V, 0V to +4.096V, or

±2.048V. Four-quadrant multiplication is possible without

the use of external resistors or op amps. The parallel logic

inputs are double buffered and are compatible with 4-bit, 8-

bit, and 16-bit microprocessors. For a hardware and soft-

ware compatible 12-bit upgrade, refer to the MAX530 data

sheet. For DACs with similar features but with a serial data

interface, refer to the MAX504/MAX515 data sheet.

________________________Applications

Battery-Powered Data-Conversion Products

Minimum Component-Count Analog Systems

Digital Offset/Gain Adjustment

Industrial Process Control

Arbitrary Function Generators

Automatic Test Equipment

Microprocessor-Controlled Calibration

____________________________Features

o Buffered Voltage Output

o Internal 2.048V Voltage Reference

o Operates from Single 5V or Dual ±5V Supplies

o Low Power Consumption:

250µA Operating Current

40µA Shutdown-Mode Current

o SSOP Package Saves Space

Temperature

o Guaranteed Monotonic Over Temperature

o 4-Quadrant Multiplication with No External

Components

o Power-On Reset

o Double-Buffered Parallel Logic Inputs

______________Ordering Information

5V, Low-Power, Parallel-Input,

Voltage-Output, 10-Bit DAC

________________________________________________________________

Maxim Integrated Products

1

24

23

22

21

20

19

18

17

1

2

3

4

5

6

7

8

D6/S0

ROFS

RFB

D2

D9/D1

D8/D0

D7/S1

TOP VIEW

VOUT

REFOUT

REFGND

A0

D5

D4

D3

16

15

14

13

9

10

11

12

LDAC

CLR

AGND

REFIN

DGND

CS

WR

A1

DIP/SO/SSOP

MAX503

__________________Pin Configuration

MAX503

REFOUT

REFIN ROFS

2.048V

REFERENCE

POWER-ON

RESET

DAC

CONTROL

LOGIC

REFGND

AGND

CLR

A0

A1

CS

WR

LDAC

DGND

VOUT

RFB

17

14

DAC LATCH

NBL

INPUT

LATCH

D6/S0

D7/S1

D8/D0

D2

D9/D1

D4

D3

D5

NBM

INPUT

LATCH

NBH

INPUT

LATCH

24

1

23

4 5 6 7

21

20

23

12

19

18

13

22

15

8

9

11

10

16

10-BIT DAC LATCH

________________Functional Diagram

Call toll free 1-800-998-8800 for free samples or literature.

PART

TEMP. RANGE

PIN-PACKAGE

MAX503CNG

0°C to +70°C

24 Narrow Plastic DIP

MAX503CWG

0°C to +70°C

24 Wide SO

MAX503CAG

0°C to +70°C

24 SSOP

19-0279; Rev 0; 8/94

Refer to the MAX530 for military temperature or die equivalents.

MAX503ENG

-40°C to +85°C

24 Narrow Plastic DIP

MAX503EWG

-40°C to +85°C

24 Wide SO

MAX503EAG

-40°C to +85°C

24 SSOP