| |
 |
|
Class Information
Number: 330/69
Name: Amplifiers > Sum and difference amplifiers
Description: Subject matter including at least two sources of signal voltage which are combined in the amplifier so that the signal output of the amplifier is a linear function of the sum or difference of the signal input sources.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7446602 |
Switched capacitor amplifier circuit and method for operating a switched capacitor amplifier circuit |
Nov. 4, 2008 |
| 7436216 |
Method and apparatus for a direct current (DC) coupled input buffer |
Oct. 14, 2008 |
| 7432766 |
Front end for an instrumentation amplifier |
Oct. 7, 2008 |
| 7429893 |
Variable-gain amplifier and related method |
Sep. 30, 2008 |
| 7420413 |
Amplifier circuit of BTL system |
Sep. 2, 2008 |
| 7414468 |
Amplifier, filter using the same, and radio communication device |
Aug. 19, 2008 |
| 7414467 |
Circuit configuration having a feedback, fully-differential operational amplifier |
Aug. 19, 2008 |
| 7414466 |
Apparatus for reducing offset voltage drifts in a charge amplifier circuit |
Aug. 19, 2008 |
| 7408406 |
Mode selection amplifier circuit usable in a signal acquisition probe |
Aug. 5, 2008 |
| 7388959 |
Harmonic generator and pre-amp |
Jun. 17, 2008 |
| 7382183 |
Minimizing switching noise and its effects in auto-zeroed amplifiers |
Jun. 3, 2008 |
| 7382184 |
Amplifier system and method |
Jun. 3, 2008 |
| 7378905 |
Differential driver circuit |
May. 27, 2008 |
| 7375587 |
Variable-gain amplifier with high linearity as to gain variations |
May. 20, 2008 |
| 7372328 |
Amplification circuit for driving a laser signal |
May. 13, 2008 |
| 7362169 |
Power efficient amplifier |
Apr. 22, 2008 |
| 7358805 |
Fully differential sensing apparatus and input common-mode feedback circuit thereof |
Apr. 15, 2008 |
| 7358819 |
Reduced-size sensor circuit |
Apr. 15, 2008 |
| 7348839 |
Method and apparatus for DC offset cancellation in amplifiers |
Mar. 25, 2008 |
| 7336126 |
Subtractor circuit and power detector arrangement having that subtractor circuit |
Feb. 26, 2008 |
| 7332958 |
Analog-differential-circuit test device |
Feb. 19, 2008 |
| 7327189 |
Differential structure programmable gain instrumentation amplifier |
Feb. 5, 2008 |
| 7304535 |
Balanced amplifier |
Dec. 4, 2007 |
| 7304536 |
Nested transimpendance amplifier |
Dec. 4, 2007 |
| 7298203 |
Amplification system capable of reducing DC offset |
Nov. 20, 2007 |
| 7292095 |
Notch filter for ripple reduction in chopper stabilized amplifiers |
Nov. 6, 2007 |
| 7282991 |
On-chip amplifier/line driver compensation circuit |
Oct. 16, 2007 |
| 7279968 |
Amplifier output voltage swing extender circuit and method |
Oct. 9, 2007 |
| 7271652 |
Differential amplifier and operational amplifier |
Sep. 18, 2007 |
| 7265615 |
Multiple differential amplifier system and method for transconductance mismatch compensation |
Sep. 4, 2007 |
| 7253680 |
Amplifier system with current-mode servo feedback |
Aug. 7, 2007 |
| 7248116 |
Differential amplifiers |
Jul. 24, 2007 |
| 7248105 |
Method and circuit for input offset correction in an amplifier circuit |
Jul. 24, 2007 |
| 7239202 |
Variable-gain constant-bandwidth transimpedance amplifier |
Jul. 3, 2007 |
| 7236054 |
Multi-operational amplifier system |
Jun. 26, 2007 |
| 7230482 |
Method of preventing abrupt voltage changes at the outputs of a pair of amplifiers and control circuit for a pair of amplifiers self-configuring in a bridge configuration |
Jun. 12, 2007 |
| 7227409 |
Apparatus for removing DC offset and amplifying signal with variable gain simultaneously |
Jun. 5, 2007 |
| 7215195 |
Differential amplifier and operational amplifier |
May. 8, 2007 |
| 7205833 |
Method and circuit for reduced setting time in an amplifier |
Apr. 17, 2007 |
| 7199655 |
Multistage amplifier circuit without interstage coupling capacitor |
Apr. 3, 2007 |
| 7190217 |
System, method and apparatus for providing ground separation between different environments |
Mar. 13, 2007 |
| 7187236 |
Rail-to-rail differential input amplification stage with main and surrogate differential pairs |
Mar. 6, 2007 |
| 7170338 |
Chopper stabilization circuits and methods |
Jan. 30, 2007 |
| 7145386 |
Configurable input amplifier for position-measuring devices |
Dec. 5, 2006 |
| 7142055 |
Buffer circuit and driver IC |
Nov. 28, 2006 |
| 7135920 |
Method and circuit for facilitating control of AC coupling in an amplifier circuit |
Nov. 14, 2006 |
| 7126423 |
Differential difference amplifier for amplifying small signals close to zero volts |
Oct. 24, 2006 |
| 7126419 |
Analog summing and differencing circuit, optical receiving circuit, optical transmitting circuit, automatic gain control amplifier, automatic frequency compensation amplifier, and limiting amp |
Oct. 24, 2006 |
| 7123080 |
Differential amplification input circuit |
Oct. 17, 2006 |
| 7116163 |
Buffer circuit |
Oct. 3, 2006 |
|
|
|
