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參數(shù)資料
| 型號： | MAX1464 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Power, Low-Noise Multichannel Sensor Signal Processor |
| 中文描述： | 低功耗、低噪聲、多路傳感器信號處理器 |
| 文件頁數(shù)： | 1/47頁 |
| 文件大小： | 527K |
| 代理商： | MAX1464 |
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General Description
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.
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 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.
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.
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.
Applications
Pressure Sensor Signal Conditioning
Weight Measurement Systems
Thermocouple and RTD Linearization
Transducers and Transmitters
Process Indicators
Calibrators and Controllers
GMR and MR Magnetic Direction Sensors
Features
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
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
Programmable Sensor Input Gain and Offset
Programmable Sensor Sampling Rate and
Resolution
No External Trim Components Required
M
Low-Power, Low-Noise Multichannel
Sensor Signal Processor
________________________________________________________________
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.
1
Ordering Information
19-3579; Rev 0; 2/05
*
Dice are tested at T
A
= +25°C, DC parameters only.
Functional Diagram and Detailed Block Diagram appear at
end of data sheet.
SPI is a trademark of Motorola, Inc.
PART
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
PIN-PACKAGE
28 SSOP
Die
28 SSOP
28 SSOP
MAX1464CAI
MAX1464C/W*
MAX1464EAI
MAX1464AAI
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
OUT2SM
AMP2M
AMP2P
OUT2LG
V
REF
INP1
V
DDF
INM1
INP2
INM2
V
SS
V
SSF
GPIO2
GPIO1
V
SS
SCLK
DI
DO
CS
CKIO
CKSEL
N.C.
V
DD
N.C.
OUT1LG
AMP1P
AMP1M
OUT1SM
SSOP
TOP VIEW
MAX1464
Pin Configuration
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