Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input voltage to output current or vice versa
Reexamination Certificate
2005-04-19
2005-04-19
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting input voltage to output current or vice versa
C327S346000, C327S067000
Reexamination Certificate
active
06882185
ABSTRACT:
An apparatus and method of generating a current pair Ip, Imwhere the ratio of the pair is exponentially related to a control signal, and where either Ipor Imis greater than or less than a minimum or maximum value includes a feedback correction circuit used to sense the value of Imor Ip. The correction circuit supplies a boost current Iboostwhen the sensed value of Ipor Imis less than or greater than the minimum or maximum value. Iboostis preferably maintained proportional to the difference of the desired value and Ipor Im.
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Gazzerro Peter C.
Walker Brett Christopher
Brown Charles D.
Callahan Timothy P.
Englund Terry L.
Pauley Nicholas J.
Qualcomm Incorporated
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