DS4424 datasheet(5/10 Pages) MAXIM

5 / 10 page

Two-/Four-Channel, I2C, 7-Bit Sink/Source

Current DAC

_______________________________________________________________________________________

VCC

RFS0

RFS1

RFS2

RFS3

SDA SCL

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

I2C-COMPATIBLE

SERIAL INTERFACE

DS4422/DS4424

DS4424 ONLY

Block Diagram

DS4424

DS4422

NAME

FUNCTION

SDA

I2C Serial Data. Input/output for I2C data.

SCL

I2C Serial Clock. Input for I2C clock.

GND

Ground

—

FS3

—

FS2

FS1

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.)

OUT0

OUT1

—

OUT2

—

OUT3

Current Output. Sinks or sources the current determined by the I2C interface and the

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

9, 11

A0, A1

Address Select Inputs. Determines the I2C slave address by connecting VCC or GND.

See the Detailed Description section for the available device addresses.

VCC

Power Supply

—

4, 5, 12,

N.C.

No Connection

—

Exposed Pad. Leave floating or connect to GND.

Pin Description

DS4424 Datasheet(PDF) 5 Page - Maxim Integrated Products

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