General Description
The MAX1462 implements a revolutionary concept in signal conditioning, where the output of its 16-bit analog-to-digital converter (ADC) is digitally corrected over the specified temperature range. This feature can be readily exploited by automotive, industrial, and medical market segments, in applications such as sensors and smart batteries. Digital correction is provided by an internal digital signal processor (DSP) and on-chip 128-bit EEPROM containing user-programmed calibration coefficients. The conditioned output is available as a 12-bit digital word and as a ratiometric (proportional to the supply voltage) analog voltage using an on-board 12-bit digital-to-analog converter (DAC). The uncommitted op amp can be used to filter the analog output.

Features
♦ Low-Voltage Operation (2.4V to 3.6V)
♦ Low-Noise, 310µA Single-Chip Sensor Signal
   Conditioning
♦ High-Precision Front End Resolves <400nV of
   Differential Input Signal
♦ On-Chip DSP and EEPROM Provide Digital
   Correction of Sensor Errors
♦ 16-Bit Signal Path Compensates Sensor Offset
   and Sensitivity and Associated Temperature
   Coefficients
♦ 12-Bit Parallel Digital Output
♦ Analog Output
♦ Compensates a Wide Range of Sensor Sensitivity and Offset
♦ Single-Shot Automated Compensation
   Algorithm—No Iteration Required
♦ Built-In Temperature Sensor
♦ Three-State, 5-Wire Serial Interface Supports
   High-Volume Manufacturing

Applications
   Hand-Held Instruments
   Piezoresistive Pressure and Acceleration
   Transducers and Transmitters
   Industrial Pressure Sensors and Calibrators
   Smart Battery Charge Systems
   Weigh Scales and Strain-Gauge Measurement
   Flow Meters
   Dive Computers and Liquid-Level Sensing
   Hydraulic Systems
   Automotive Systems