器件名称:
MAX1459CAP
功能描述:
2-Wire, 4-20mA Smart Signal Conditioner
文件大小:
243.57KB 共24页
简 介:
19-1619; Rev 0; 1/00 KIT ATION EVALU E L B A IL AVA 2-Wire, 4–20mA Smart Signal Conditioner 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 The MAX1459 highly integrated analog-sensor signal conditioner is optimized for piezoresistive sensor calibration and compensation with minimal external components. It includes a programmable current source for sensor excitation, a 3-bit programmable-gain amplifier (PGA), a 128-bit internal EEPROM, and four 12-bit DACs. 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 calibrates and compensates first-order temperature errors by adjusting the offset and span of the input signal through digita……
