Texas Instruments has introduced a 3ppm/°C-maximum temperature-drift, high-accuracy, low-cost CMOS voltage-reference family with high output current. The REF50xx family features accuracy and system-performance levels previously found only in costly buried Zener technologies. Although designed for next-generation industrial-process control, it is also a good fit for a wide range of applications, including medical instrumentation, precision data acquisition and Test and Measurement. It has a high output current of ±10mA that provides accurate voltage reference to the ADC without an additional op amp buffer. High accuracy (0.05% maximum) and low output-voltage noise (7.5µVpp for 2.5V output) enable peak performance of the ADC in high-resolution applications. The low temperature drift minimises system errors due to over-temperature.
