MAX1455

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Low-Cost Precision Sensor Signal Conditioner

Data Sheet (Rev. 2) Product Selection Table

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Overview

Provides Amplification, Calibration, and Temperature Compensation
Selectable Output Clipping Limits
Accommodates Sensor Output Sensitivities from 5mV/V to 40mV/V
Single-Pin Digital Programming
No External Trim Components Required
16-Bit Offset and Span Calibration Resolution
Fully Analog Signal Path
PRT Bridge Can Be Used for Temperature-Correction Input
On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction
Fast 3.2kHz Frequency Response
On-Chip Uncommitted Op Amp
Secure-Lock™ Prevents Data Corruption

The MAX1455 is a highly integrated, sensor signal processor for resistive element sensors. The MAX1455 provides amplification, calibration, and temperature compensation that 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 with integrated 16-bit digital-to-analog converters (DACs). Offset and span are also calibrated using 16-bit DACs, allowing sensor products to be truly interchangeable.

The MAX1455 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 MAX1455 provides a unique temperature compensation strategy that was developed to provide a remarkable degree of flexibility while minimizing testing costs.

The MAX1455 is available in die form, and in 16-pin SSOP and TSSOP packages.

Applications

Accelerometer Measurements
Humidity Sensors
MR and GMR Sensors
Piezoresistive Silicon Sensors
Pressure Sensors and Transducers
Resistive Elements Sensors
Strain Gauges

Part Models: 1
1ku List Price: price unavailable

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX1455AAE+	16-SSOP-5.3_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

Software Development 1

MAX1455 EV Kit Software, 4.10.0

Evaluation Kits

Evaluation Kit for the MAX1455

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Features and Benefits

Proven PCB Layout
Convenient On-Board Test Points
Fully Assembled and Tested
Optional Pressure Sensor (MAX1455EVKIT-CS)
Factory-Calibrated Over Temperature (MAX1455EVKIT-CS)
LabVIEW®-Based Software

Product Details

The MAX1455 evaluation kit (EV kit) demonstrates resistive element sensor compensation and calibration using the MAX1455 and a computer. The kit includes an assembled and tested PCB, which is available with a factory-calibrated sensor (MAX1455EVKIT-CS) or without a sensor (MAX1455EVKIT-NS). The software and computer are not required for performing the initial performance evaluation of the sensor option since the EV kit is already compensated. A 10-pin ribbon cable connects the EV board to a serial-key adapter, MAX1452KEY, that plugs into a computer serial port, allowing the board to be evaluated inside an environmental chamber. The software requires a PC compatible with Windows® 95/98/2000/XP.

Applications