Rainbow-electronics MAX5155 Bedienungsanleitung PDF herunterladen

_______________General Description

The MAX5154/MAX5155 low-power, serial, voltage-out-

put, dual 12-bit digital-to-analog converters (DACs)

consume only 500µA from a single +5V (MAX5154) or

+3V (MAX5155) supply. These devices feature Rail-to-

Rail

output swing and are 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™ and

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 reg-

isters to be updated independently or simultaneously

with a 16-bit serial word. Additional features include

programmable shutdown (2µA), hardware-shutdown

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 out-

put pin for daisy chaining.

________________________Applications

Industrial Process Control Remote Industrial Controls

Digital Offset and Gain Microprocessor-

Adjustment 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

♦ Single-Supply Operation: +5V (MAX5154)

+3V (MAX5155)

♦ Low Quiescent Current: 500µA (normal operation)

2µA (shutdown mode)

♦ SPI/QSPI and Microwire Compatible

♦ Available in Space-Saving 16-Pin QSOP Package

♦ Power-On Reset Clears Registers and DACs

to Zero

♦ Adjustable Output Offset

MAX5154/MAX5155

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

with Serial Interface

________________________________________________________________

Maxim Integrated Products

19-1316; Rev 1; 12/97

______________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 408-737-7600 ext. 3468.

REFA

AGND

DGNDPDLCL

DOUT

16-BIT

SHIFT

CONTROL

INPUT

REG A

INPUT

REG B

SCLK

UPO REFB

DINCS

DAC B

DAC A

DAC

REG A

LOGIC

OUTPUT

DECODE

CONTROL

DAC

REG B

MAX5154

MAX5155

OUTB

OSB

OUTA

OSA

_________________________________________________________Functional Diagram

Ordering Information continued at end of data sheet.

Pin Configuration appears at end of data sheet.

INL

(LSB)

PIN-PACKAGETEMP. RANGEPART

±1/2

±1

±1/2

16 QSOP

16 Plastic DIP

16 Plastic DIP0°C to +70°C

0°C to +70°C

0°C to +70°CMAX5154ACEE

MAX5154BCPE

MAX5154ACPE

±116 QSOP0°C to +70°CMAX5154BCEE

1 2 3 4 5 6 ... 15 16

MAX5154/MAX5155 1

Inhaltsverzeichnis

Seite 1 - MAX5154/MAX5155

_______________General DescriptionThe MAX5154/MAX5155 low-power, serial, voltage-out-put, dual 12-bit digital-to-analog converters (DACs)consume only

Seite 2

MAX5154/MAX5155saved, allowing the MAX5154/MAX5155 to recall theoutput state prior to entering shutdown when returningto normal mode. Exit shutdown by

Seite 3

The MAX5154/MAX5155’s digital inputs are doublebuffered, which allows any of the following: loading theinput register(s) without updating the DAC regi

Seite 4

MAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface12 ____________________________________________________________________

Seite 5

Serial-Data OutputThe serial-data output, DOUT, is the internal shift regis-ter’s output. DOUT allows for daisy chaining of devicesand data readback.

Seite 6

MAX5154/MAX5155Bipolar Output The MAX5154/MAX5155 can be configured for a bipo-lar output, as shown in Figure 11. The output voltage isgiven by the eq

Seite 7

it trips the comparator. The microprocessor (µP) storesthis “high” calibration value. Repeat the process with a dim light (off) to obtain the dark cur

Seite 8

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses arei

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MAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface2 _____________________________________________________________________

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MAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface_______________________________________________________________________

Seite 11

ResolutionMAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface4 ___________________________________________________________

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MAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface_______________________________________________________________________

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MAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface6 _____________________________________________________________________

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MAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface_______________________________________________________________________

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MAX5154/MAX5155Low-Power, Dual, 12-Bit Voltage-Output DACswith Serial Interface8 _____________________________________________________________________

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_______________Detailed DescriptionThe MAX5154/MAX5155 dual, 12-bit, voltage-outputDACs are easily configured with a 3-wire serial inter-face. These d

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