Rainbow-electronics MAX5104 Uživatelský manuál stáhnout pdf (Strana 1)

General Description

The MAX5104 low-power, serial, voltage-output, dual

12-bit digital-to-analog converter (DAC) consumes only

500µA from a single +5V supply. This device features

Rail-to-Rail

output swing and is available in a space-

saving 16-pin QSOP package. To maximize the dynamic

range, the DAC output amplifiers are configured with an

internal gain of +2V/V.

The 3-wire serial interface is SPI™/QSPI™/MICROWIRE™

compatible. Each DAC has a double-buffered input

organized as an input register followed by a DAC register,

which allows the input and DAC registers to be updated

independently or simultaneously with a 16-bit serial

word. Additional features include programmable power-

down (2µA), hardware power-down lockout (PDL), a

separate reference voltage input for each DAC that

accepts AC and DC signals, and an active-low clear

input (CL) that resets all registers and DACs to zero.

These devices provide a programmable logic pin for

added functionality, and a serial-data output pin for

daisy chaining.

________________________Applications

Industrial Process Control

Remote Industrial Controls

Digital Offset and Gain Adjustment

Microprocessor-Controlled Systems

Motion Control

Automatic Test Equipment (ATE)

____________________________Features

♦ 12-Bit Dual DAC with Internal Gain of +2V/V

♦ Rail-to-Rail Output Swing

♦ 12µs Settling Time

♦ +5V Single-Supply Operation

♦ Low Quiescent Current

500µA (normal operation)

2µA (power-down mode)

♦ SPI/QSPI/MICROWIRE Compatible

♦ Space-Saving 16-Pin QSOP Package

♦ Power-On Reset Clears Registers and DACs to Zero

♦ Adjustable Output Offset

MAX5104

Low-Power, Dual, Voltage-Output, 12-Bit DAC

with Serial Interface

________________________________________________________________

Maxim Integrated Products

19-1587; Rev 0; 11/99

Ordering Information

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

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

REFA

AGND

DGNDPDLCL

DOUT

16-BIT

SHIFT

CONTROL

INPUT

REG A

INPUT

REG B

SCLK

UPOH REFB

DINCS

DAC B

DAC A

DAC

REG A

LOGIC

OUTPUT

DECODE

CONTROL

DAC

REG B

MAX5104

OUTB

OSB

OUTA

OSA

Functional Diagram

Pin Configuration appears at end of data sheet.

PIN-

PACKAGE

TEMP. RANGEPART

16 QSOP

16 QSOP0°C to +70°C

-40°C to +85°CMAX5104EEE

MAX5104CEE

INL

(LSB)

±4

1 2 3 4 5 6 ... 11 12

Shrnutí obsahu

Strany 1 - Functional Diagram

General DescriptionThe MAX5104 low-power, serial, voltage-output, dual12-bit digital-to-analog converter (DAC) consumes only500µA from a single +5V su

Strany 2 - ELECTRICAL CHARACTERISTICS

MAX5104Low-Power, Dual, Voltage-Output, 12-Bit DACwith Serial Interface10 ____________________________________________________________________________

Strany 3