High precision op-amps consume less than 1 μA

15 November 2006 Analogue, Mixed Signal, LSI Perimeter Security, Alarms & Intruder Detection

A new family of ultralow power op-amps claimed to set a new standard for precision low voltage operation and tiny footprint is available from Linear Technology. The LT6003 (single), LT6004 (dual) and LT6005 (quad) amplifiers draw less than 1 μA and operate from 1,6-16 V. With input offset voltage of 500 μV max at 25°C and a maximum drift of 5 μV/°C, the LT6003 family is the most precise low voltage ultra low current op-amp, according to the manufacturer.

A 2 x 2 mm DFN package makes its footprint the smallest in this class and inputs and outputs feature rail-to-rail operation. For many micropower amplifiers, rail-to-rail operation compromises the supply current, with up to a threefold current increase as the output approaches the rails. According to Linear, the LT6003 family 'uses unique design techniques to preserve its micropower operation in all normal operating conditions as well as during startup, when the amplifier output is likely to be at the supply rail.'

Both leaded and leadless DFN packages are available with guaranteed specs over commercial (0 to 70°C), industrial (-40 to 85°C) and automotive (-40 to 125°C) temperature ranges.

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