Gain programmable current mirrors based on current steering

Gain programmable current mirrors based on current steering

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A new and compact scheme for a programmable current mirror is introduced. It features linear gain continuously adjustable in a wide range. In such a scheme differential pairs are used as current steering elements in order to provide gain programmability. All mirror transistors operate in strong inversion. Implementation of a linear OTA/multiplier is discussed. Experimental verification of the proposed scheme is provided.


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      • Adams, W.J., Ramırez-Angulo, J.: `OTA extended gm adjustment range via electronically programmable current mirrors', Proc. IEEE ISCAS, June 1991, p. 2553–2556.
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      • Palmisano, G., Pennisi, S.: `New CMOS tunable transconductor for filtering applications', Proc. IEEE ISCAS, May 2001, 1, p. 196–199.

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