DS4432 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

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DS4432

Dual-Channel, I2C, 7-Bit Sink/Source Current DAC

Maxim Integrated 

Rev 0; 12/08

Dual-Channel, I2C, 7-Bit Sink/Source

Current DAC

General Description

The DS4432 contains two I2C programmable current

DACs that are each capable of sinking and sourcing

current up to 200µA. Each DAC output has 127 sink

and 127 source settings that are programmed using the

I2C interface. The current DAC outputs power up in a

high-impedance state.

Applications

Power-Supply Adjustment

Power-Supply Margining

Adjustable Current Sink or Source

Features

♦ Two Current DACs

♦ Full-Scale Current 50µA to 200µA

♦ Full-Scale Range for Each DAC Determined by

External Resistors

♦ 127 Settings Each for Sink and Source Modes

♦ I2C-Compatible Serial Interface

♦ Low Cost

♦ Small Package (8-Pin µSOP)

♦ -40°C to +85°C Temperature Range

♦ 2.7V to 5.5V Operating Range

Pin Configuration

TOP VIEW

SDA 1 +

SCL 2

FS1 3

DS4432

GND 4

μSOP

8 VCC

7 OUT1

6 OUT0

5 FS0

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

DS4432U+

-40°C to +85°C

8 μSOP

DS4432U+T&R -40°C to +85°C

8 μSOP

+Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

4.7kΩ

4.7kΩ

SDA

SCL

GND

VCC

DS4432

OUT0

OUT1

FS0

RFS0

FS1

RFS1

Typical Operating Circuit

VCC

VOUT0

OUT

DC-DC

CONVERTER

R0A

FB

R0B

VOUT1

OUT

DC-DC

CONVERTER

R1A

FB

R1B

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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