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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:

Class Number Class Name Patents
330/283 Having emitter degeneration 133


Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
7564310 Amplifier for improving electrostatic discharge characteristic Jul. 21, 2009
7558014 Programmable high pass amplifier for perpendicular recording systems Jul. 7, 2009
7551031 Amplifier Jun. 23, 2009
7545210 Gain adjustment for programmable gain amplifiers Jun. 9, 2009
7545209 Gain adjustment for programmable gain amplifiers Jun. 9, 2009
7538612 Control circuit for diode based RF circuits May. 26, 2009
7525390 Circuit for converting a differential signal into a non-differential signal, and RF transmitter comprising such a circuit Apr. 28, 2009
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
7417506 Amplifier having switchable negative feedback Aug. 26, 2008
7417500 Control of an adjustable gain amplifier 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
7292097 Amplifier and method for processing signals Nov. 6, 2007
7292100 Interpolated variable gain amplifier with multiple active feedback cells 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
7057457 Low-noise amplifying circuit Jun. 6, 2006
7057454 Resistor and switch-minimized variable analog gain 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
6958654 Layout technique for matched resistors on an integrated circuit substrate Oct. 25, 2005
6958655 Variable gain amplifier circuit using variable impedance circuit Oct. 25, 2005
6958648 Programmable gain amplifier with glitch minimization Oct. 25, 2005

1 2 3 4 5 6 7 8










 
 
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