Precision voltage references use extremely low power

9 February 2005 Power Electronics / Power Management

Intersil has released the ISL60002 series, which are 1,25 V and 2,5 V additions to its rapidly expanding line of low power precision voltage references. These ICs bring the precision performance standards previously available only in laboratory equipment to portable and battery-operated systems.

The low, sub-1,5 μW power consumption of the ISL60002, 400 nA @2,7 V, allows the voltage references to remain powered continuously by the system battery. By operating the reference continuously biased, 12- to 24-bit battery powered data acquisition circuits that normally disable the reference between conversions can now provide the highest accuracy and lowest possible long-term drift by eliminating the effects of initial accuracy changes and time delay as the reference settles to its final value.

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