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LTC1451

LTC1452/LTC1453

sn145123 145123fas

LT/TP 0100 2K REV A • PRINTED IN USA

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7487

(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977

PART NUMBER

DESCRIPTION

COMMENTS

LTC1257

5V to 15V Single Supply, Complete 12-Bit VOUT

Reference Can Be Overdriven Up to 12V, i.e., FS MAX = 12V

DAC in SO-8 Package

LTC1446/LTC1446L

Dual 12-Bit VOUT DACs in SO-8

5V with 4.096V Full-Scale Output/3V with 2.5V Full Scale

LTC1448

Dual 12-Bit VOUT DAC in SO-8

VCC from 2.7V to 5.5V, Output Swings to VREF

LTC1655/LTC1655L

5V/3V 16-Bit VOUT DAC in SO-8

Pin Conpatible with LTC1451/LTC1453

LTC1659

Single 12-Bit VOUT DAC in MSOP

VCC from 2.7V to 5.5V, Output Swings to VREF

LTC7541

12-Bit Multiplying Parallel IOUT DAC

5V to 16V Supply, 12-Bit Wide Interface

LTC7543/LTC8143

12-Bit Multiplying Serial IOUT DAC

5V Supply, Clear Pin and Serial Data Output (LTC8143)

LTC8043

12-Bit Multiplying Serial IOUT DAC

5V Supply, SO-8 Package

RELATED PARTS

A Wide Swing, Bipolar Output 12-Bit DAC

CLK

DIN

CS/LD

µP

0.1

µF

VCC

VOUT

GND

VREF

LTC1451

1451/2/3 TA06

–

LT1077

–5V

10k

20k

2 • DIN • 4.095

4096

VOUT:

DIN

VOUT

4.094

– 4.096

2048

4095

– 4.096V

This circuit shows how to make a bipolar output 12-bit

DAC with a wide output swing using an LTC1451 and an

LT1077. R1 and R2 resistively divide down the LTC1451

output and an offset is summed in using the LTC1451

onboard 2.048V reference and R3 and R4. R5 ensures that

the onboard reference is always sourcing current and

never has to sink any current even when VOUT is at full-

scale. The LT1077 output will have a wide bipolar output

swing of – 4.096V to 4.094V as shown in the figure above.

With this output swing 1LSB = 2mV.

TYPICAL APPLICATION

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