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Class Information
Number: 330/282
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including gain control means > Having feedback means acting as variable impedance
Description: Subject matter including a feedback means acting as a variable impedance to control the gain of the amplifier.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7495514 |
Low noise amplifier |
Feb. 24, 2009 |
| 7476839 |
Amplifier circuit for optical disk drive |
Jan. 13, 2009 |
| 7423487 |
Variable gain feedback amplifier circuit apparatus and method therefor |
Sep. 9, 2008 |
| 7417499 |
Gain controlled amplifier and cascoded gain controlled amplifier based on the same |
Aug. 26, 2008 |
| 7417500 |
Control of an adjustable gain amplifier |
Aug. 26, 2008 |
| 7417506 |
Amplifier having switchable negative feedback |
Aug. 26, 2008 |
| 7414476 |
Sensor interface circuitry having adjustable gain and Q, and method for adjusting sensor interface circuitry gain and Q |
Aug. 19, 2008 |
| 7391260 |
Variable gain amplifier and variable gain amplifier module |
Jun. 24, 2008 |
| 7388428 |
Power amplifier with controllable feedback loop |
Jun. 17, 2008 |
| 7378881 |
Variable gain amplifier circuit |
May. 27, 2008 |
| 7345546 |
Amplifier circuit and input circuit |
Mar. 18, 2008 |
| 7339434 |
Linear-in-dB variable gain amplifier using geometric ladder circuit |
Mar. 4, 2008 |
| 7304543 |
Burst-mode TIA (trans-impedance amplifier) |
Dec. 4, 2007 |
| 7299015 |
Transmission output control circuit, and wireless device using the same |
Nov. 20, 2007 |
| 7292100 |
Interpolated variable gain amplifier with multiple active feedback cells |
Nov. 6, 2007 |
| 7292097 |
Amplifier and method for processing signals |
Nov. 6, 2007 |
| 7279977 |
Integrated circuit with resistive network having reduced mismatch |
Oct. 9, 2007 |
| 7265616 |
Charge amplifier |
Sep. 4, 2007 |
| 7262655 |
High bandwidth resistor |
Aug. 28, 2007 |
| 7256648 |
Variable feedback circuits and methods |
Aug. 14, 2007 |
| 7245179 |
Auto gain controller |
Jul. 17, 2007 |
| 7227246 |
Matching circuits on optoelectronic devices |
Jun. 5, 2007 |
| 7212749 |
Signal receiver having wide band amplification capability |
May. 1, 2007 |
| 7196577 |
Amplifier with capacitor selection |
Mar. 27, 2007 |
| 7180366 |
Data signal amplifier and processor with multiple signal gains for increased dynamic signal range |
Feb. 20, 2007 |
| 7157973 |
Layout technique for matched resistors on an integrated circuit substrate |
Jan. 2, 2007 |
| 7154330 |
Stability compensation for adjustable gain amplifier |
Dec. 26, 2006 |
| 7142059 |
Amplifier arrangement |
Nov. 28, 2006 |
| 7138873 |
Filter circuit providing low distortion and enhanced flexibility to obtain variable gain amplification |
Nov. 21, 2006 |
| 7138869 |
Amplifier circuit |
Nov. 21, 2006 |
| 7123098 |
Transimpedance amplifier with differential peak detector |
Oct. 17, 2006 |
| 7076224 |
Process for controlling the gain of a frequency tuner, and corresponding tuner, in particular for the reception of terrestrial digital television signals |
Jul. 11, 2006 |
| 7068107 |
Variable gain amplifier |
Jun. 27, 2006 |
| 7065336 |
Analog base band unit for a RF receiver and method for using the same |
Jun. 20, 2006 |
| 7057454 |
Resistor and switch-minimized variable analog gain circuit |
Jun. 6, 2006 |
| 7057457 |
Low-noise amplifying circuit |
Jun. 6, 2006 |
| 7026875 |
System and method for a programmable gain amplifier |
Apr. 11, 2006 |
| 7006070 |
Operational amplifier circuit, driving circuit, and driving method |
Feb. 28, 2006 |
| 7002408 |
Data signal amplifier and processor with multiple signal gains for increased dynamic signal range |
Feb. 21, 2006 |
| 6970038 |
Switching scheme to improve linearity and noise in switched capacitor stage with switched feedback capacitor |
Nov. 29, 2005 |
| 6958655 |
Variable gain amplifier circuit using variable impedance circuit |
Oct. 25, 2005 |
| 6958648 |
Programmable gain amplifier with glitch minimization |
Oct. 25, 2005 |
| 6958654 |
Layout technique for matched resistors on an integrated circuit substrate |
Oct. 25, 2005 |
| 6946910 |
Configurable feedback path in an amplitude control system |
Sep. 20, 2005 |
| 6937103 |
Voltage generating circuit |
Aug. 30, 2005 |
| 6930554 |
Variable gain low noise amplifier and method |
Aug. 16, 2005 |
| 6919761 |
Wideband variable gain amplifier with high linearity operating in switch mode |
Jul. 19, 2005 |
| 6920334 |
Method and apparatus for providing gain control feedback in RF amplifiers |
Jul. 19, 2005 |
| 6909323 |
Variable gain amplifier |
Jun. 21, 2005 |
| 6906595 |
Variable gain current feedback amplifier |
Jun. 14, 2005 |
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