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The design of a monolithic analog exponential voltage-to-current converter based on the characteristic of bipolar transistors is described. The accurate transfer function (less than 1 percent deviation over 4 decades of current) and the low temperature dependency (less than 1.5/spl times/10/SUP -3/ per K) have been achieved by an accurate balancing and compensation technique.
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Huijsing et al. (1980) studied this question.
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