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Low-Cost Precision Sensor Signal Conditioner

Low-Cost, Precision Sensor Signal Conditioner

Product Details

The MAX1452 is a highly integrated analog-sensor signal processor optimized for industrial and process control applications utilizing resistive element sensors. The MAX1452 provides amplification, calibration, and temperature compensation that enables an overall performance approaching the inherent repeatability of the sensor. The fully analog signal path introduces no quantization noise in the output signal while enabling digitally controlled trimming with the integrated 16-bit DACs. Offset and span are calibrated using 16-bit DACs, allowing sensor products to be truly interchangeable.

The MAX1452 architecture includes a programmable sensor excitation, a 16-step programmable-gain amplifier (PGA), a 768-byte (6144 bits) internal EEPROM, four 16-bit DACs, an uncommitted op amp, and an on-chip temperature sensor. In addition to offset and span compensation, the MAX1452 provides a unique temperature compensation strategy for offset TC and FSOTC that was developed to provide a remarkable degree of flexibility while minimizing testing costs.

The MAX1452 is packaged for the commercial, industrial, and automotive temperature ranges in 16-pin SSOP/TSSOP and 24-pin TQFN packages.

FAQs: MAX1452/5

Key Features

  • Single-Chip, Integrated Analog Signal Path Reduces Design Time and Saves Space in a Complete Precision Sensor Solution
    • Provides Amplification, Calibration, and Temperature Compensation
    • Fully Analog Signal Path
    • Accommodates Sensor Output Sensitivities from 4mV/V to 60mV/V
    • Single-Pin Digital Programming
    • No External Trim Components Required
    • 16-Bit Offset and Span Calibration Resolution
    • Supports Both Current and Voltage Bridge Excitation
    • Fast 150µs Step Response
    • On-Chip Uncommitted Op Amp
  • On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction Improving System Performance
  • Secure-Lock™ Prevents Data Corruption
  • Low 2mA Current Consumption Simplifies Power-Supply Design in 4–20mA Applications

Applications/Uses

  • Accelerometers
  • Humidity Sensors
  • Pressure Calibrators and Controllers
  • Pressure Sensors
  • Resistive Elements Sensors
  • Strain Gauges
  • Transducers and Transmitters
Parametric specs for Sensor Signal Conditioners
Sensing Element PRT
Resistive Bridge
Strain Gauge
PGA Gain 39 to 234 (16 gains)
Calibration Method Internal DACs updated from internal EEPROM
Accuracy (%FSO) (max) 0.1
Output Type Analog
ICC (mA) (typ) 2
IBRIDGE (mA) 0.5 to 2.0
DACs/ADCs 16-bit DAC
VSUPPLY (V) 4.5 to 5.5
Package/Pins DICE SALES/N/A
SSOP/16
TQFN/24
Budgetary
Price (See Notes)
$9.89 @1k
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Simplified Block Diagram

MAX1452: Functional Diagram MAX1452: Functional Diagram Zoom icon

Technical Docs

Data Sheet Low-Cost Precision Sensor Signal Conditioner Jul 28, 2015
Tutorial Overview of Sensor Signal Paths
Tutorial Introduction to Spirometers and Important Design Considerations for Selecting Electrical Components
App Note Making the MAX1452/MAX1455 Signal Conditioners Tolerant of Supply Limitations
App Note Using the MAX1452 for Remote-Sensor Compensation
App Note MAX1452 Nonlinearity-Correction Application Circuit
App Note MAX1452/MAX1455 FAQs
App Note Startup Requirements for the MAX1452/MAX1455 Sensor Signal Conditioners
App Note Driving Strain-Gauge Bridge Sensors with Signal-Conditioning ICs
App Note Calibration of Weight Sensors Using Dead Weights
Tutorial PWM Outputs Enhance Sensor Signal Conditioners
Tutorial Sensor Temperature Compensation Using the Four DAC Signal Conditioning Architecture
App Note Step-by-Step Procedure for Performing Temperature Compensation Using MAX1452 and MAX1455 Evaluation Kit Software
App Note Direct Interface of the MAX1452/MAX1455 with the MAX1452/MAX1455 Communication Board
App Note High-Gain Signal Conditioning Circuit for Thin and Thick Film Sensors
App Note Miniature Flow Sensor Has Electronic Temperature Compensation
App Note Demystifying Piezoresistive Pressure Sensors
App Note MAX1452 Diagnostic Clip Circuit
Tutorial Design and Manufacture of Automotive Pressure Sensors
App Note Overvoltage Protection in Automotive Systems
App Note Adding Diagnostic Capability to MAX14XX Low Cost High Performance Signal-Conditioning Devices
App Note MAX1452 Serial Communications
App Note New ICs Revolutionize The Sensor Interface
App Note Tech Tips: Getting the Most from Your Sensor and Conditioning Electronics

Design & Development

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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.

Parameters

Parametric specs for Sensor Signal Conditioners
Sensing Element PRT
Resistive Bridge
Strain Gauge
PGA Gain 39 to 234 (16 gains)
Calibration Method Internal DACs updated from internal EEPROM
Accuracy (%FSO) (max) 0.1
Output Type Analog
ICC (mA) (typ) 2
IBRIDGE (mA) 0.5 to 2.0
DACs/ADCs 16-bit DAC
VSUPPLY (V) 4.5 to 5.5
Package/Pins DICE SALES/N/A
SSOP/16
TQFN/24
Budgetary
Price (See Notes)
$9.89 @1k

Key Features

  • Single-Chip, Integrated Analog Signal Path Reduces Design Time and Saves Space in a Complete Precision Sensor Solution
    • Provides Amplification, Calibration, and Temperature Compensation
    • Fully Analog Signal Path
    • Accommodates Sensor Output Sensitivities from 4mV/V to 60mV/V
    • Single-Pin Digital Programming
    • No External Trim Components Required
    • 16-Bit Offset and Span Calibration Resolution
    • Supports Both Current and Voltage Bridge Excitation
    • Fast 150µs Step Response
    • On-Chip Uncommitted Op Amp
  • On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction Improving System Performance
  • Secure-Lock™ Prevents Data Corruption
  • Low 2mA Current Consumption Simplifies Power-Supply Design in 4–20mA Applications

Applications/Uses

  • Accelerometers
  • Humidity Sensors
  • Pressure Calibrators and Controllers
  • Pressure Sensors
  • Resistive Elements Sensors
  • Strain Gauges
  • Transducers and Transmitters

Description

The MAX1452 is a highly integrated analog-sensor signal processor optimized for industrial and process control applications utilizing resistive element sensors. The MAX1452 provides amplification, calibration, and temperature compensation that enables an overall performance approaching the inherent repeatability of the sensor. The fully analog signal path introduces no quantization noise in the output signal while enabling digitally controlled trimming with the integrated 16-bit DACs. Offset and span are calibrated using 16-bit DACs, allowing sensor products to be truly interchangeable.

The MAX1452 architecture includes a programmable sensor excitation, a 16-step programmable-gain amplifier (PGA), a 768-byte (6144 bits) internal EEPROM, four 16-bit DACs, an uncommitted op amp, and an on-chip temperature sensor. In addition to offset and span compensation, the MAX1452 provides a unique temperature compensation strategy for offset TC and FSOTC that was developed to provide a remarkable degree of flexibility while minimizing testing costs.

The MAX1452 is packaged for the commercial, industrial, and automotive temperature ranges in 16-pin SSOP/TSSOP and 24-pin TQFN packages.

FAQs: MAX1452/5

Simplified Block Diagram

MAX1452: Functional Diagram MAX1452: Functional Diagram Zoom icon

Technical Docs

Data Sheet Low-Cost Precision Sensor Signal Conditioner Jul 28, 2015
Tutorial Overview of Sensor Signal Paths
Tutorial Introduction to Spirometers and Important Design Considerations for Selecting Electrical Components
App Note Making the MAX1452/MAX1455 Signal Conditioners Tolerant of Supply Limitations
App Note Using the MAX1452 for Remote-Sensor Compensation
App Note MAX1452 Nonlinearity-Correction Application Circuit
App Note MAX1452/MAX1455 FAQs
App Note Startup Requirements for the MAX1452/MAX1455 Sensor Signal Conditioners
App Note Driving Strain-Gauge Bridge Sensors with Signal-Conditioning ICs
App Note Calibration of Weight Sensors Using Dead Weights
Tutorial PWM Outputs Enhance Sensor Signal Conditioners
Tutorial Sensor Temperature Compensation Using the Four DAC Signal Conditioning Architecture
App Note Step-by-Step Procedure for Performing Temperature Compensation Using MAX1452 and MAX1455 Evaluation Kit Software
App Note Direct Interface of the MAX1452/MAX1455 with the MAX1452/MAX1455 Communication Board
App Note High-Gain Signal Conditioning Circuit for Thin and Thick Film Sensors
App Note Miniature Flow Sensor Has Electronic Temperature Compensation
App Note Demystifying Piezoresistive Pressure Sensors
App Note MAX1452 Diagnostic Clip Circuit
Tutorial Design and Manufacture of Automotive Pressure Sensors
App Note Overvoltage Protection in Automotive Systems
App Note Adding Diagnostic Capability to MAX14XX Low Cost High Performance Signal-Conditioning Devices
App Note MAX1452 Serial Communications
App Note New ICs Revolutionize The Sensor Interface
App Note Tech Tips: Getting the Most from Your Sensor and Conditioning Electronics

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.