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LTC1659IMS8

12-Bit Rail-to-Rail Micropower DAC in MSOP Package

Linear Technology 

FEATURES

■ Buffered True Rail-to-Rail Voltage Output

■ Maximum DNL Error: 0.5LSB

■ 12-Bit Resolution

■ Supply Operation: 3V to 5V

■ Output Swings from 0V to VREF

■ VREF Can Tie to VCC

■ Schmitt Trigger On Clock Input Allows Direct

Optocoupler Interface

■ Power-On Reset Clears DAC to 0V

■ 3-Wire Cascadable Serial Interface

■ Low Cost

■ 8-Lead SO and MSOP Packages

APPLICATIONS

■ Digital Calibration

■ Industrial Process Control

■ Automatic Test Equipment

■ Cellular Telephones

LTC1659

12-Bit Rail-to-Rail

Micropower DAC in

MSOP Package

DESCRIPTION

The LTC®1659 is a single supply, rail-to-rail voltage output,

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

age. 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

can be tied to VCC which can range from 2.7V to 5.5V.

This allows a rail-to-rail output swing from 0V to VCC. The

LTC1659 draws only 250μA from a 5V supply.

Its guaranteed ±0.5LSB maximum DNL makes the LTC1659

excel in calibration, control and trim/adjust applications.

The low power supply current and the small MSOP

package make the LTC1659 ideal for battery-powered

applications.

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

μP

TO

OTHER

DACS

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

2.7V TO 5.5V

8

VCC

2 DIN

1 CLK

3 CS/LD

4 DOUT

12-BIT

SHIFT

REG

AND

DAC

LATCH

6

REF

12-BIT

DAC

+

VOUT 7 RAIL-TO-RAIL

VOLTAGE

–

OUTPUT

POWER-ON

RESET

GND

5

1659 TA01

Differential Nonlinearity

vs Input Code

0.5

0

–0.5

0 512 1024 1536 2048 2560 3072 3584 4095

CODE

1659 TA02

1659fa

1

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