Rainbow-electronics MAX132 Uživatelský manuál stáhnout pdf

_______________General Description

The MAX132 is a CMOS, 18-bit plus sign, serial-output,

analog-to-digital converter (ADC). Multi-slope integra-

tion provides high-resolution conversions in less time

than standard integrating ADCs, allowing operation up

to 100 conversions per second. Low conversion noise

provides guaranteed operation with ±512mV full-scale

input range (2µV/LSB). A simple 4-wire serial interface

connects easily to all common microprocessors, and

twos-complement output coding simplifies bipolar mea-

surements. Typical supply current is only 60µA and is

reduced to 1µA in sleep mode. Four serially pro-

grammed digital outputs can be used to control an

external multiplexer or programmable-gain amplifier.

The MAX132 comes in 24-pin narrow DIP and wide SO

packages, and is available in commercial and extend-

ed temperature grades.

High resolution, compact size, and low power make this

device ideal for data loggers, weigh scales, data-acqui-

sition systems, and panel meters.

________________________Applications

Remote Data Acquisition

Battery-Powered Instruments

Industrial Process Control

Transducer-Signal Measurement

Pressure, Flow, Temperature, Voltage

Current, Resistance, Weight

____________________________Features

♦ Low Supply Current:

60µA (Normal Operation)

1µA (Sleep-Mode Operation)

♦ ±0.006% FSR Accuracy at 16 Conv/sec

♦ Low Noise: 15µV

RMS

♦ Serial I/O Interface with Programmed Output for

Mux and PGA

♦ Performs up to 100 Conv/sec

♦ ±2pA Input Current

♦ 50Hz/60Hz Rejection

MAX132

±18-Bit ADC with Serial Interface

________________________________________________________________

Maxim Integrated Products

V+

BUF OUT

INT OUT

INT IN

SCLK

DOUT

DIN

TOP VIEW

CREF-

CREF+

REF+

REF-

OSC1

OSC2

AGND

IN LO

IN HI

V-

DGND

EOC

DIP/SO

MAX132

__________________Pin Configuration

MAX132

CREF- CREF+

602k

SCLK

DOUT

DIN

EOC

-5V

±512mV INPUT

BUF OUT

INT OUT

INT IN

4.7nF

REF+

REF-

AGND

IN LO

IN HI

V-

V+

DGND

OSC2OSC1

+5V

________________Functional Diagram

Call toll free 1-800-998-8800 for free samples or literature.

19-0009; Rev 2; 8/95

PART

MAX132CNG

MAX132CWG

MAX132C/D 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

24 Narrow Plastic DIP

24 Wide SO

Dice*

EVALUATION KIT MANUAL

FOLLOWS DATA SHEET

______________Ordering Information

* Contact factory for dice specifications.

** Contact factory for availability and processing to MIL-STD-883.

MAX132ENG

MAX132EWG

MAX132MRG -55°C to +125°C

-40°C to +85°C

-40°C to +85°C 24 Narrow Plastic DIP

24 Wide SO

24 Narrow CERDIP**

1 2 3 4 5 6 ... 15 16

Shrnutí obsahu

Strany 1 - Maxim Integrated Products

_______________General DescriptionThe MAX132 is a CMOS, 18-bit plus sign, serial-output,analog-to-digital converter (ADC). Multi-slope integra-tion pr

Strany 2 - ELECTRICAL CHARACTERISTICS

MAX132±18-Bit ADC with Serial Interface10 _________________________________________________________________________________________________________Dig

Strany 3 - INTERFACE TIMING

MAX132±18-Bit ADC with Serial Interface______________________________________________________________________________________ 11Averaging 2 or 3 read-

Strany 4

MAX132±18-Bit ADC with Serial Interface12 ______________________________________________________________________________________Command Input Register

Strany 5

MAX132±18-Bit ADC with Serial Interface______________________________________________________________________________________ 13read, the collision bi

Strany 6 - Input Voltage Range

MAX132Second Deintegrate PhaseThe second deintegrate phase deintegrates residualvoltage on the integration capacitor that has beenthrough the X8 phase

Strany 7 - Reference Voltage Selection

MAX132±18-Bit ADC with Serial Interface______________________________________________________________________________________ 15MAX132RW2RW1V- V+DGNDI

Strany 8 - External Components

MAX132±18-Bit ADC with Serial Interface16 _________________________________________________________________________________________________________Chi

Strany 9 - Operation

MAX132±18-Bit ADC with Serial Interface2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATIN

Strany 10 - Command Input Register 0

MAX132±18-Bit ADC with Serial Interface_______________________________________________________________________________________ 3ELECTRICAL CHARACTERIS

Strany 11 - Start Conversion Bit

MAX132±18-Bit ADC with Serial Interface4 _____________________________________________________________________________________________________________

Strany 12 - Resolution (Offset Corrected)

MAX132±18-Bit ADC with Serial Interface_______________________________________________________________________________________ 5MAX132CREF- CREF+120CS

Strany 13

____________Functional DescriptionThe MAX132 integrates the input voltage for a fixedperiod of time, then deintegrates a known referencevoltage and me

Strany 14

MAX132±18-Bit ADC with Serial Interface_______________________________________________________________________________________ 7±660mV for 60Hz mode o

Strany 15

MAX132±18-Bit ADC with Serial Interface8 _______________________________________________________________________________________Differential Reference

Strany 16

MAX132±18-Bit ADC with Serial Interface_______________________________________________________________________________________ 9Note: Capacitor values

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Rainbow-electronics MAX132 Uživatelský manuál

Procházejte online nebo si stáhněte Uživatelský manuál pro Satelit Rainbow-electronics MAX132. Rainbow Electronics MAX132 User Manual Uživatelská příručka

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