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Improved Current Mirror for Low Beta Transistors Disclosure Number: IPCOM000037032D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29

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Related People

Gruver, MR Swart, DP [+details]


This current mirror allows very long strings to be built with a large degree of accuracy, even with low-Beta devices. The figure below shows the circuit for a PNP configuration. Transistors Q1, Q2, and Qn represent current sources, which are a mirror of the reference current IREF.