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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.
References
-
-
1)
-
A.J. López-Martín ,
J. Ramírez-Angulo ,
C. Durbha ,
R.G. Carvajal
.
A CMOS transconductor with multidecade tuning using balanced current scaling in moderate inversion.
IEEE J. Solid-State Circuits
,
5 ,
1078 -
1083
-
2)
-
E.A.M. Klumperink ,
E. Seevinck
.
MOS current gain cells with electronically variable gain and constant bandwidth.
IEEE J. Solid-State Circuits
,
5 ,
1465 -
1468
-
3)
-
Adams, W.J., Ramırez-Angulo, J.: `OTA extended gm adjustment range via electronically programmable current mirrors', Proc. IEEE ISCAS, June 1991, p. 2553–2556.
-
4)
-
Palmisano, G., Pennisi, S.: `New CMOS tunable transconductor for filtering applications', Proc. IEEE ISCAS, May 2001, 1, p. 196–199.
-
5)
-
A.J. López-Martın ,
A. Carlosena
.
Current-mode multiplier/divider circuits based on the MOS translinear principle.
Analog Integr. Circuits Signal Process
,
3 ,
265 -
278
http://iet.metastore.ingenta.com/content/journals/10.1049/el_20060750
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