Appeal No. 2002-2276
Application No. 09/472,702
The current output is compared with the reference current to
produce a current difference or error. The feedback loop is
utilized to set the transconductance of the transconductor to a
value proportional to the ratio of the reference current and the
reference voltage.
Claim 1 is illustrative of the invention and reads as
follows:
1. A transconductance-setting and maintenance circuit,
comprising:
a reference voltage source having positive and negative
terminals;
a first transconductor coupled to said reference
voltage and producing a current output;
a reference current source coupled to said first
transconductor, and
a feedback loop coupled to said first transconductor
and said reference current source, said feedback loop
reducing error in said current output and setting the
transconductance of said first transconductor to a value
proportional to the ratio of said reference current and said
reference voltage.
The Examiner relies on the following prior art:
Chambers et al. (Chambers) 5,530,399 Jun. 25, 1996
Luo 6,111,467 Aug. 29, 2000
(filed May 04, 1998)
Claims 1, 11, 12, 20, and 21 stand rejected under 35 U.S.C.
§ 102(b) as being anticipated by Chambers. Claims 2-4 stand
2
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