10

LTC1663

1663 F01

INPUT CODE

(b)

OUTPUT

VOLTAGE

NEGATIVE

OFFSET

0V

512

0

1023

INPUT CODE

OUTPUT

VOLTAGE

(a)

(c)

INPUT CODE

OUTPUT

VOLTAGE

POSITIVE

FSE

Figure 1. Effects of Rail-to-Rail Operation On a DAC Transfer Curve. (a) Overall Transfer Function (b) Effect of Negative

IN

0.1

µF

1

5 (4)

1 (1)

2

4 (5)

2 (7)

LTC1663 PIN NUMBERS IN PARENTHESES

REFER TO MSOP PACKAGE

3 (8)

3

3.9V TO 20V

3V

OUT

TO

µP

SCL

1663 F02

GND

SDA

OUT

LTC1663

0V

GND

LT1460S3-3

0.01

µF

+

Figure 2. LT1460 As Power Supply for the LTC1663