Current DAC

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5

SDA SCL

A1

A0

GND

FS0

FS1

OUT1

OUT0

CURRENT

DAC0

F8h

F9h

SOURCE OR

SINK MODE

FS2

OUT2

FS3

OUT3

CURRENT

DAC3

127 POSITIONS

EACH FOR SINK

AND SOURCE

MODE

FAh

FBh

CURRENT

DAC1

CURRENT

DAC2

SERIAL INTERFACE

DS4422/DS4424

DS4424 ONLY

Block Diagram

PIN

DS4424

DS4422

NAME

FUNCTION

1

1

SDA

2

2

SCL

3

3

GND

Ground

4

—

FS3

5

—

FS2

6

6

FS1

7

7

FS0

Full-Scale Calibration Input. A resistor to ground on these pins determines the full-scale

current for each output. FS0 controls OUT0, FS1 controls OUT1, etc. (The DS4422 has only

two inputs: FS0 and FS1.)

8

8

OUT0

10

10

OUT1

12

—

OUT2

14

—

OUT3

resistance connected to FSx. (The DS4422 has only two outputs: OUT0 and OUT1.)

9, 11

9, 11

A0, A1

See the Detailed Description section for the available device addresses.

13

13

Power Supply

—

4, 5, 12,

14

N.C.

No Connection

—

—

EP

Exposed Pad. Leave floating or connect to GND.

Pin Description