MAX1464 Maxim, MAX1464 Datasheet
MAX1464
Manufacturer Part Number
MAX1464
Description
Low-Power - Low-Noise Multichannel Sensor Signal Processor
Manufacturer
Maxim
Datasheet
1.MAX1464.pdf
(47 pages)
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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.
19-3579; Rev 0; 2/05
Functional Diagram and Detailed Block Diagram appear at
end of data sheet.
SPI is a trademark of Motorola, Inc.
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.
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
________________________________________________________________ Maxim Integrated Products
General Description
Low-Power, Low-Noise Multichannel
Applications
Sensor Signal Processor
♦ Programmable Amplification, Calibration,
♦ Two Differential or Four Single-Ended ADC Input
♦ Accommodates Sensor Output Sensitivities from
♦ 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
♦ No External Trim Components Required
*Dice are tested at T
MAX1464CAI
MAX1464C/W*
MAX1464EAI
MAX1464AAI
Linearization, and Temperature Compensation
Channels
1mV/V to 1V/V
Resolution
PART
TOP VIEW
OUT1SM
OUT1LG
AMP1M
AMP1P
CKSEL
SCLK
A
CKIO
N.C.
N.C.
V
V
DO
CS
DD
DI
SS
= +25°C, DC parameters only.
-40°C to +85°C
-40°C to +125°C
TEMP RANGE
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Ordering Information
0°C to +70°C
0°C to +70°C
MAX1464
SSOP
Pin Configuration
www.DataSheet4U.com
28
27
26
25
24
23
22
21
20
19
18
17
16
15
OUT2SM
AMP2M
AMP2P
OUT2LG
V
INP1
INM1
INP2
INM2
V
GPIO2
GPIO1
V
V
REF
SSF
DDF
SS
PIN-PACKAGE
28 SSOP
Die
28 SSOP
28 SSOP
Features
1
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