13

LTC1654

1654fb

This circuit shows how to use an LTC1654 and an LT

to make a wide bipolar output swing 14-bit DAC with an

be set by loading the appropriate code for DAC A, sets the

offset. As this value changes, the transfer curve for the

output moves up and down as illustrated in the graph

below.

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

CLR

SCK

SDI

CS/LD

DGND

SDO

REFHI B

REFLO B

AGND

REFLO A

REFHI A

LTC1654

0.1

µF

49.9k

1%

5V

1654 TA02

µP

100k

1%

49.9k

1%

15V

–15V

100k

1%

–

+

LT1077

0

CODE

5

1654 TA03

–5

–10

10

16383

A Wide Swing, Bipolar Output 14-Bit DAC with Digitally Controlled Offset

TYPICAL APPLICATIO S