Rainbow-electronics MAX552 User Manual download pdf

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.

_______________General Description

The MAX551/MAX552 are 12-bit, current-output, 4-quad-

rant multiplying digital-to-analog converters (DACs).

These devices are capable of providing unipolar or

bipolar outputs when operating from either a single +5V

(MAX551) or +3V (MAX552) power supply. An internal

power-on-reset circuit clears all DAC registers on

power-up, setting the DAC output voltage to 0V.

The SPI™/QSPI™ and Microwire™-compatible 3-wire

serial interface saves board space and reduces power

dissipation compared with parallel-interface devices.

The MAX551/MAX552 feature double-buffered interface

logic with a 12-bit input register and a 12-bit DAC regis-

ter. Data in the DAC register sets the DAC output volt-

age. Data is loaded into the input register via the serial

interface. The LOAD input transfers data from the input

voltage.

The MAX551/MAX552 are available in an 8-pin DIP

package or a space-saving 10-pin µMAX package. The

µMAX package provides an asynchronous clear (CLR)

input that clears all DAC registers when pulled to GND,

setting the output voltage to 0V.

________________________Applications

Automatic Calibration

Gain Adjustment

Transducer Drivers

Process-Control I/O Boards

Digitally Controlled Filters

Motion-Controlled Systems

µP-Controlled Systems

Programmable Amplifiers/Attenuators

____________________________Features

♦ Single-Supply Operation:

+4.5V to +5.25V (MAX551)

+2.7V to +3.6V (MAX552)

♦ 12.5MHz 3-Wire Serial Interface

♦ SPI/QSPI and Microwire Compatible

♦ Power-On Reset Clears DAC Output to Zero

♦ Asynchronous Clear Input Clears DAC Output

to Zero

♦ Voltage Mode or Bipolar Mode Operation with

a Single Power Supply

♦ Schmitt-Trigger Digital Inputs for Direct

Optocoupler Interface

♦ 0.4µA Supply Current

♦ 10-Pin µMAX Package

MAX551/MAX552

+3V/+5V, 12-Bit, Serial, Multiplying DACs

in 10-Pin µMAX Package

________________________________________________________________

Maxim Integrated Products

RFB

REF

CLR

SCLKV

GND

AGND

OUT

MAX551

MAX552

µMAX

TOP VIEW

DINLOAD

SCLK

DINLOAD

RFB

REFGND

OUT

DIP

MAX551

MAX552

19-1260; Rev 0; 10/97

PART

MAX551ACPA

MAX551BCPA

MAX551ACUB 0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-

PACKAGE

8 Plastic DIP

10 µMAX

______________Ordering Information

Ordering Information continued at end of data sheet.

SPI and QSPI are trademarks of Motorola Inc. Microwire is a trademark of National Semiconductor Corp.

MAX551BCUB

MAX551AEPA

MAX551BEPA -40°C to +85°C

-40°C to +85°C

0°C to +70°C 10 µMAX

8 Plastic DIP

MAX551AEUB -40°C to +85°C 10 µMAX

MAX551BEUB -40°C to +85°C 10 µMAX

LINEARITY

(LSB)

±1/2

±1

±1/2

±1

±1/2

±1

±1/2

±1

_________________Pin Configurations

12-BIT

D/A CONVERTER

RFB

OUT

AGND*

CLR*

LOAD

REF

SCLK

GND

*µMAX PACKAGE ONLY

12-BIT

DAC REGISTER

DIN

12-BIT

SHIFT REGISTER

POWER-ON

RESET

MAX551

MAX552

________________Functional Diagram

1 2 3 4 5 6 ... 11 12

MAX551/MAX552 1

Summary of Contents

Page 1 - MAX551/MAX552

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.________

Page 2

MAX551/MAX552ture range, then low-tempco (<300ppm/°C) resistorsshould be used.__________Applications InformationOutput AmplifierFor best linearity,

Page 3

Figure 5 shows the MAX551 connected as a voltageoutput DAC. In this mode of operation, the OUT pin isconnected to the reference-voltage source, and th

Page 4

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

Page 5

MAX551/MAX552+3V/+5V, 12-Bit, Serial, Multiplying DACsin 10-Pin µMAX Package2 ________________________________________________________________________

Page 6

MAX551/MAX552+3V/+5V, 12-Bit, Serial, Multiplying DACsin 10-Pin µMAX Package__________________________________________________________________________

Page 7

MAX551/MAX552+3V/+5V, 12-Bit, Serial, Multiplying DACsin 10-Pin µMAX Package4 ________________________________________________________________________

Page 8

MAX551/MAX552+3V/+5V, 12-Bit, Serial, Multiplying DACsin 10-Pin µMAX Package__________________________________________________________________________

Page 9

MAX551/MAX552+3V/+5V, 12-Bit, Serial, Multiplying DACsin 10-Pin µMAX Package6 ________________________________________________________________________

Page 10

MAX551/MAX552+3V/+5V, 12-Bit, Serial, Multiplying DACsin 10-Pin µMAX Package__________________________________________________________________________

Page 11

MAX551/MAX552+3V/+5V, 12-Bit, Serial, Multiplying DACsin 10-Pin µMAX Package8 ________________________________________________________________________

Page 12

symmetrical, then the clock signal used must meet thetCHand tCLrequirements given in the ElectricalCharacteristics.Figure 2 shows the MAX551/MAX552 ti

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