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MAX1452
Low-Cost Precision Sensor Signal Conditioner

Low-Cost, Precision Sensor Signal Conditioner


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 184kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail
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.

NOTE: This product requires use of the following:

  • MAX1452/MAX1455 EVKIT Software

    Key Features   Applications/Uses
    • Provides Amplification, Calibration, and Temperature Compensation
    • 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
    • Fully Analog Signal Path
    • On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction
    • Supports Both Current and Voltage Bridge Excitation
    • Fast 150µs Step Response
    • On-Chip Uncommitted Op Amp
    • Secure-Lock™ Prevents Data Corruption
    • Low 2mA Current Consumption

     
  • Data Acquisition

    Key Specifications:  Sensor Signal Conditioners
    Part Number PGA Calibration Method Accuracy
    (%FSO)
    Output Type ICC
    (mA)
    IBRIDGE
    (mA)
    Features VSUPPLY
    (V)
    Price
    max typ/max See Notes
    MAX1452  16-bit Internal DACs updated from internal EEPROM 0.01 Analog 2.0/2.5 0.1 to 2.0
    Internal Auxilliary Op-Amp
    Internal Temperature ADC
    No External Trim Components Required
    4.5 to 5.5 $2.95 @1k
    See All Sensor Signal Conditioners (4)

    Diagram
    MAX1452: Functional Diagram
    Functional Diagram

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    Document Ref.: 19-1829; Rev 2; 2009-07-21
    This page last modified: 2009-07-22


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