1

LTC1659

12-Bit Rail-to-Rail

Micropower DAC in

MSOP Package

FEATURES

s

8-Lead MSOP Package

s

12-Bit Resolution

s

Supply Operation: 3V to 5V

s

Buffered True Rail-to-Rail Voltage Output

s

s

s

Schmitt Trigger On Clock Input Allows Direct

Optocoupler Interface

s

Power-On Reset Clears DAC to 0V

s

3-Wire Cascadable Serial Interface

s

Maximum DNL Error: 0.5LSB

s

Low Cost

The LTC

put, 12-bit digital-to-analog converter (DAC) in an MSOP

package. It includes a rail-to-rail output buffer amplifier

and an easy-to-use 3-wire cascadable serial interface.

The LTC1659 output swings from 0V to REF. The REF input

LTC1659 draws only 250

µA from a 5V supply.

Its guaranteed

±0.5LSBmaximumDNLmakestheLTC1659

excel in calibration, control and trim/adjust applications.

The low power supply current and the small MSOP pack-

age make the LTC1659 ideal for battery-powered applica-

tions.

CODE

0

0.5

0

–0.5

1024

2048 2560

1659 TA02

512

1536

3072 3584 4095

Differential Nonlinearity

vs Input Code

Functional Block Diagram: 12-Bit Rail-to-Rail DAC

–

+

12-BIT

DAC

2.7V TO 5.5V

GND

POWER-ON

RESET

TO

OTHER

DACS

12-BIT

SHIFT

REG

AND

DAC

LATCH

µP

REF

2

86

4

5

1659 TA01

CLK

1

CS/LD

3

7

RAIL-TO-RAIL

VOLTAGE

OUTPUT

s

Digital Calibration

s

Industrial Process Control

s

Automatic Test Equipment

s

Cellular Telephones

, LTC and LT are registered trademarks of Linear Technology Corporation.