GENERAL DESCRIPTION
FEATURES
o Highly Integrated Sensor Signal Conditioner for 2-Wire, 4–20mA Transmitters o Sensor Errors Trimmed Using Correction Coefficients Stored in Internal EEPROM— Eliminates the Need for Laser Trimming and Potentiometers o Compensates Offset, Offset TC, FSO, FSOTC, FSO Linearity o Programmable Current Source (0.1mA to 2.0mA) for Sensor Excitation o Fast Signal-Path Settling Time (≈1ms) o Accepts Sensor Outputs from +1mV/V to +40mV/V o Fully Analog Signal Path o Internal or External Temperature Reference Compensation o Automated Pilot Production (Calibration/ Compensation) System Available o Write Protection for EEPROM Data Security MAX1459 Achieving a total error factor within 1% of the sensor’s repeatability errors, the MAX1459 compensates offset, offset temperature coefficient (offset TC), full-span output (FSO), FSO temperature coefficient (FSOTC), and FSO nonlinearity of silicon piezoresistive sensors. The MAX1459 allows temperature compensation via the external sensor, an internal temperature-dependent resistor, or a dedicated external temperature transducer.
Maxim Integrated
