MAX1454

Precision Sensor Signal Conditioner with Overvoltage Protection

Low-Cost, Precision Sensor Signal Conditioner


Please check latest availability status for a specific part variant.

Description

The MAX1454 is a highly integrated analog sensor signal conditioner targeted for automotive applications. The device provides amplification, calibration, and temperature compensation to enable 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 of the output. Offset and span are calibrated with integrated 16-bit DACs, allowing sensors to be truly interchangeable.

The device architecture includes a programmable sensor excitation, a 32-step programmable-gain amplifier (PGA), a 2K x 8 bits internal flash memory, four 16-bit DACs, and an on-chip temperature sensor. In addition to offset and span compensation, the device provides a unique temperature-compensation method for offset TC and FSO TC to provide a remarkable degree of flexibility while minimizing manufacturing costs.

The device is packaged in a 16-pin TSSOP and covers the automotive AEC-Q100 Grade 1 temperature range of -40°C to +125°C.
MAX1454: Functional Diagram MAX1454: Functional Diagram Enlarge+

Key Features

  • Complete Signal Conditioning in a Single IC Package
    • Provides Amplification, Calibration, and Temperature Compensation
    • Accommodates Sensor Output Sensitivities from 1mV/V to 200mV/V
    • Overvoltage Protection to 45V
    • Reverse-Voltage Protection to 45V
  • High-Precision Compensation Reduces Downstream Circuit Complexity
    • Fully Analog Signal Path
    • 16-Bit Offset and Span-Calibration Resolution
    • On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction
  • Supports Both Current and Voltage-Bridge Excitation
  • Fast 85µs Step Response
  • Sensor Fault Detection
  • Simple PCB Layout
  • Single-Pin Digital Programming
  • No External Trim Components Required

Applications/Uses

  • Humidity Sensors
  • Pressure Calibrators and Controllers
  • Pressure Sensors
  • Resistive Element Sensors
  • Strain Gauges
Part NumberSensing ElementPGA GainCalibration MethodAccuracy
(%FSO)
Output TypeICC
(mA)
IBRIDGE
(mA)
DACs/ADCsVSUPPLY
(V)
Package/PinsBudgetary
Price
maxtypSee Notes
MAX1454 Strain Gauge6 to 2048 (32 gains)Internal DACs updated from internal EEPROM0.1Analog2.50.1 to 2.516-bit ADC3 to 5.5
TSSOP HYBRID/16
$3.34 @1k
See All Sensor Signal Conditioners (10)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX1454DBSYS: Evaluation System for the MAX1454
MAX1454EVSYS: Evaluation System for the MAX1454

Quality and Environmental Data

Product Reliability Reports: MAX1454.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX14541EAXK+T
  • MAX14544ETA+
  • MAX14544ETA+T
  • MAX14545ETA+
  • MAX14545ETA+T
  • MAX14548AEEWL+
  • MAX14548AEEWL+T
  • MAX14548EEWL+
  • MAX14548EEWL+T
  • MAX1454AUE+
  • MAX1454AUE+T
  • MAX1454AUE/V+
  • MAX1454AUE/V+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources


    Electronics in Vehicles (ELIV) 2019
    10/18/2019 - 10/19/2019, Bonn, Germany
    The international VDI Congress ELIV (Electronics In Vehicles) is THE event for all experts in the field of electrical and electronical car engineering and integration of mechanical and electronical systems.

    RSVP