Voltage reference IC suits digital SLRs

Maxim Integrated Products debuts the MAX6010 precision, micropower voltage reference. The chip touts a high power supply rejection ratio of 51dB (typ) at 2kHz. This is useful for easing design of applications with electrically noisy environments. It has a 200mV dropout voltage and 3µA (typ) supply current that is virtually independent of supply voltage. This configuration avoids the wasted supply current of conventional shunt-mode references and eliminates the external resistor that they require. The chip measures 2.9mm x 2.3mm in an SOT23 package. The MAX6010 is suited for portable and battery-operated applications including battery-monitoring systems and lens image stabilisation in high-end digital SLR cameras.

The MAX6010 operates with an input voltage from 3.2V to 5.5V, and has an output of 3V. The reference has an initial accuracy of ±0.2 per cent (A grade) and ±0.4 per cent (B grade), and temperature drift of 16ppm/°C (typ). Prices start at Rs.29.17 ($0.60) for 1000-up, FOB USA. Samples are available now.

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