Hugo Veenstra, Fred Hurkx, D. V. Goor, Hans Brekelmans
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Design and analyses of bias current circuits for operation at output voltages above BV/sub CEO/
In this paper, the operation of bias current sources at output voltages exceeding BV/sub CEO/ is analysed for various widely used and newly proposed circuit topologies. The most effective way to increase the current mirror output breakdown voltage is based on a feed-back technique. Accurate modelling of the avalanche current factor M up to M-1/spl ap/1 is required to find a good agreement between measurements and circuit simulations.
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