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CMOS micro-power output stage for integrated voltage references

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1 Author(s)
Manetakis, K. ; Qualcomm CDMA Technol., San Diego, CA, USA

A CMOS micro-power, class-AB output stage with high current-drive capability for integrated voltage references is presented. A weak-inversion MOS translinear-loop ensures that the harmonic mean of the push and pull currents equals a constant bias current. It can source/sink 20 mA with only 15 μA quiescent current, thus achieving very high power efficiency. It operates from a 2.5 V power supply and is stable for capacitive loads up to 2 nF.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 15 )