Features and Benefits
- Programmable Amplification, Calibration, Linearization, and Temperature Compensation
- Two Differential or Four Single-Ended ADC Input Channels
- Accommodates Sensor Output Sensitivities from 1mV/V to 1V/V
- 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 Resolution
- No External Trim Components Required
The MAX1464 is a highly integrated, low-power, low-noise multichannel sensor signal processor optimized for industrial and process-control applications 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 linearization, and temperature compensation that enable an overall performance approaching the inherent repeatability of the sensor without requiring any external trim components.
Two 16-bit voltage-output DACs and two 12-bit PWMs can be used to indicate each of the temperature-compensated 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-programmable 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 commercial temperature ranges in a 28-pin SSOP package.
- Calibrators and Controllers
- GMR and MR Magnetic Direction Sensors
- Pressure Sensor Signal Conditioning
- Process Indicators
- Thermocouple and RTD Linearization
- Transducers and Transmitters
- Weight Measurement Systems
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
MAX1464 Reliability Data1/12/202334K
Overview of Sensor Signal Paths5/12/2010
PWM Outputs Enhance Sensor Signal Conditioners1/24/2003
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.
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