Rainbow-electronics MAX5842 User Manual download pdf

General Description

The MAX5842 is a quad, 12-bit voltage-output, digital-

to-analog converter (DAC) with an I

™

-compatible,

2-wire interface that operates at clock rates up to

400kHz. The device operates from a single 2.7V to 5.5V

supply and draws only 230µA at V

= 3.6V. A power-

down mode decreases current consumption to less

than 1µA. The MAX5842 features three software-selec-

table power-down output impedances: 100kΩ , 1kΩ,

and high impedance. Other features include internal

precision Rail-to-Rail

output buffers and a power-on

reset (POR) circuit that powers up the DAC in the

100kΩ power-down mode.

The MAX5842 features a double-buffered I

C-compati-

ble serial interface that allows multiple devices to share

a single bus. All logic inputs are CMOS-logic compati-

ble and buffered with Schmitt triggers, allowing direct

interfacing to optocoupled and transformer-isolated

interfaces. The MAX5842 minimizes digital noise

feedthrough by disconnecting the clock (SCL) signal

from the rest of the device when an address mismatch

is detected.

The MAX5842 is specified over the extended tempera-

ture range of -40°C to +85°C and is available in a

miniature 10-pin µMAX package. Refer to the MAX5841

data sheet for the 10-bit version.

Applications

Digital Gain and Offset Adjustments

Programmable Voltage and Current Sources

Programmable Attenuation

VCO/Varactor Diode Control

Low-Cost Instrumentation

Battery-Powered Equipment

ATE

Features

♦ Ultra-Low Supply Current

230µA at V

= 3.6V

280µA at V

= 5.5V

♦ 300nA Low-Power Power-Down Mode

♦ Single 2.7V to 5.5V Supply Voltage

♦ Fast 400kHz I

C-Compatible 2-Wire Serial

Interface

♦ Schmitt-Trigger Inputs for Direct Interfacing to

Optocouplers

♦ Rail-to-Rail Output Buffer Amplifiers

♦ Three Software-Selectable Power-Down Output

Impedances

100kΩ, 1kΩ, and High Impedance

♦ Read-Back Mode for Bus and Data Checking

♦ Power-On Reset to Zero

♦ 10-Pin µMAX Package

MAX5842

Quad, 12-Bit, Low-Power, 2-Wire, Serial

Voltage-Output DAC

________________________________________________________________ Maxim Integrated Products 1

OUTD

OUTC

OUTB

OUTAGND

SCL

ADD

MAX5842

µMAX

TOP VIEW

REFSDA

Pin Configuration

Ordering Information

µC

SDA

SCL

SDA

REF

SCL

OUTA

OUTB

MAX5842

OUTC

OUTD

OUTB

OUTC

OUTD

OUTA

Typical Operating Circuit

19-2317; Rev 0; 1/02

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP

RANGE

PIN-

PACKAGE

ADDRESS

MAX5842LEUB -40

C to +85

C 10 µMAX 0111 10X

MAX5842MEUB -40

C to +85

C 10 µMAX 1011 10X

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

C is a trademark of Philips Corp.

1 2 3 4 5 6 ... 14 15

Voltage-Output DAC 1

Summary of Contents

Page 1 - Voltage-Output DAC

General DescriptionThe MAX5842 is a quad, 12-bit voltage-output, digital-to-analog converter (DAC) with an I2C™-compatible, 2-wire interface that oper

Page 2

MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC10 __________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC_____________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC12 __________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC_____________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC14 __________________________________________________________________________________

Page 7

MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DACMaxim cannot assume responsibility for use of any circuitry other than circuitry enti

Page 8

MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC2 ___________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC_____________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC4 ___________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC_____________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC6 ___________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC_____________________________________________________________________________________

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MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC8 ___________________________________________________________________________________

Page 15

MAX5842Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC_____________________________________________________________________________________

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Rainbow-electronics MAX5842 User Manual

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Summary of Contents

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