This configuration avoids the wasted supply current of conventional shunt-mode references and eliminates the external resistor that they require. Packaged in a 2.9mm x 2.3mm SOT23, the MAX6010 is well suited for portable and battery-operated applications such as battery-monitoring systems and lens image stabilization in high-end digital SLR cameras.
The MAX6010 operates with an input voltage from 3.2V to 5.5V, and has an output of 3.0V. The reference has an initial accuracy of ±0.2% (A grade) and ±0.4% (B grade), and temperature drift of 16ppm/degree Celsius (typ). Prices start at $0.60 (1000-up, FOB USA). Samples are available now.