MAX1464

更新时间： 2024-09-24 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		传感器
页数	文件大小	规格书
47页	528K
描述
Low-Power, Low-Noise Multichannel Sensor Signal Processor

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MAX1464 数据手册

19-3579; Rev 0; 2/05

Low-Power, Low-Noise Multichannel

Sensor Signal Processor

General Description

Features

The MAX1464 is a highly integrated, low-power, low-

noise multichannel sensor signal processor optimized

for industrial, automotive, and process-control applica-

tions such as pressure sensing and compensation,

RTD and thermocouple linearization, weight sensing

and classification, and remote process monitoring with

limit indication.

♦ Programmable Amplification, Calibration,

Linearization, and Temperature Compensation

♦ Two Differential or Four Single-Ended ADC Input

Channels

♦ Accommodates Sensor Output Sensitivities from

1mV/V to 1V/V

The MAX1464 accepts sensors with either single-ended

or differential outputs. The MAX1464 accommodates

sensor output sensitivities from 1mV/V to 1V/V. The

MAX1464 provides amplification, calibration, signal lin-

earization, and temperature compensation that enable

an overall performance approaching the inherent

repeatability of the sensor without requiring any exter-

nal trim components.

♦ Two DAC/PWM Output Signal Channels

♦ Supports 4–20mA Current Loop Applications

♦ 4kB of FLASH Memory for Code and Coefficients

♦ 128 Bytes of FLASH Memory for User Information

♦ Integrated Temperature Sensing

♦ Flexible Dual Op-Amp Block

Two 16-bit voltage-output DACs and two 12-bit PWMs

can be used to indicate each of the temperature-com-

pensated sensor signals independently, as a sum or

difference signal, or user-defined relationship between

each signal and temperature. Uncommitted op amps

are available to buffer the DAC outputs, drive heavier

external loads, or provide additional gain and filtering.

♦ Programmable Sensor Input Gain and Offset

♦ Programmable Sensor Sampling Rate and

Resolution

♦ No External Trim Components Required

The MAX1464 incorporates a 16-bit CPU, user-pro-

grammable 4kB of FLASH program memory, 128 bytes

of FLASH user information, one 16-bit ADC, two 16-bit

DACs, two 12-bit PWM digital outputs, four rail-to-rail

op amps, one SPI™-compatible interface, two GPIOs,

and one on-chip temperature sensor.

Ordering Information

PART

TEMP RANGE

0°C to +70°C

PIN-PACKAGE

28 SSOP

Die

MAX1464CAI

MAX1464C/W*

MAX1464EAI

MAX1464AAI

The MAX1464 operates from a single 5.0V (typ) supply

and is packaged for automotive, industrial, and com-

mercial temperature ranges in a 28-pin SSOP package.

0°C to +70°C

-40°C to +85°C

-40°C to +125°C

28 SSOP

Applications

*Dice are tested at T = +25°C, DC parameters only.

Pressure Sensor Signal Conditioning

Weight Measurement Systems

Thermocouple and RTD Linearization

Transducers and Transmitters

Process Indicators

Pin Configuration

TOP VIEW

OUT1SM

AMP1M

AMP1P

OUT1LG

N.C.

28 OUT2SM

27 AMP2M

26 AMP2P

25 OUT2LG

MAX1464

REF

Calibrators and Controllers

23 INP1

22 INM1

21 INP2

20 INM2

GMR and MR Magnetic Direction Sensors

N.C.

CKSEL

CKIO

CS 10

DO 11

Functional Diagram and Detailed Block Diagram appear at

end of data sheet.

SSF

DI 12

17 GPIO2

16 GPIO1

SPI is a trademark of Motorola, Inc.

SCLK 13

15 V

DDF

SSOP

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...47

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