CMOS exponential function generating circuit with...

Details CMOS exponential function generating circuit with... CMOS exponential function generating circuit with...

2007-02-20

2007-02-20

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Exponential

C327S347000, C327S348000, C327S512000, C327S513000

Reexamination Certificate

active

11004432

ABSTRACT:
Provided is a CMOS exponential function generating circuit capable of compensating for the exponential function characteristic according to temperature variations. The exponential function generating circuit includes an voltage scaler scaling the value of an external gain control voltage signal, an exponential function generating unit generating exponential function current and voltage in response to a signal output from the voltage scaler, a reference voltage generator providing a reference voltage to the exponential function generating unit, and a temperature compensator compensating for the exponential function characteristic according to temperature variations.

REFERENCES:
patent: 5200655 (1993-04-01), Feldt
patent: 5534813 (1996-07-01), DeMicheli
patent: 5757230 (1998-05-01), Mangelsdorf
patent: 5940235 (1999-08-01), Sasaki et al.
patent: 5952867 (1999-09-01), Choi
patent: 6369618 (2002-04-01), Bloodworth et al.
patent: 6879204 (2005-04-01), Kanou
patent: 6882185 (2005-04-01), Walker et al.
patent: 6930532 (2005-08-01), Kanou et al.
patent: 2003-198291 (2003-07-01), None
Siang Tong Tan et al., “A 270 MHz, 1 Vpk—pk, Low-Distortion Variable Gain Amplifier in 0.35 μm CMOS Process,” ESSCIRC 2002 (pp. 307-310).
W.C. Song et al., “High frequency/high dynamic range CMOS VGA,” Electronics Letters Jun. 22, 200, vol. 36, No. 13 (pp. 1096-1098).

Affiliated with

Also associated with

Rating

CMOS exponential function generating circuit with... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CMOS exponential function generating circuit with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CMOS exponential function generating circuit with... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3862809