10µA, Low-Dropout, Precision Voltage Reference

The MAX872/MAX874 precision 2.5V and 4.096V micro-power voltage references consume a maximum of only 10µA and operate from supply voltages up to 20V. The combination of ultra-low quiescent current and low 200mV dropout makes them ideal for battery-powered equipment. They source and sink up to 500µA with only 200mV input voltage headroom, which makes the 2.5V MAX872 ideal for use with a 3V supply and the 4.096V MAX874 ideal for use with a 5V supply.

Initial accuracy of 0.2% at +25°C (±5mV for the MAX872, ±8mV for the MAX874) and low 40ppm/°C max drift make these references suitable for a wide range of precision applications.

Applications

* Battery-Powered Applications * Handheld Instruments (PDAs, Palmtops) * Power Supplies

* Output Voltage

* 2.500V ±0.2% (MAX872)

* 4.096V ±0.2% (MAX874)

* Wide Operating Voltage Range

* 2.7V to 20V (MAX872)

* 4.3V to 20V (MAX874)

* 10µA Max Supply Current

* 40ppm/°C Max Drift Over Extended Temp. Range

* Line Regulation Over Temp.

* 20µV/V (MAX872)

* 75µV/V (MAX874)

* Load Regulation Over Temp.

* 0.6mV/mA Max (MAX872)

* 1.0mV/mA Max (MAX874)

* ±500µA Sink/Source Current