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Class Information
Number: 330/254
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including differential amplifier > Having gain control means
Description: Subject matter including circuitry which controls the amplification of the applied signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609112 |
Boosted tail-current circuit |
Oct. 27, 2009 |
| 7605659 |
Gain adjustment for programmable gain amplifiers |
Oct. 20, 2009 |
| 7605660 |
Linear multi-stage transimpedance amplifier |
Oct. 20, 2009 |
| 7602239 |
Variable gain amplifier circuits |
Oct. 13, 2009 |
| 7602247 |
Variable gain amplifier and AC power supply device using the same |
Oct. 13, 2009 |
| 7598719 |
Switching regulator with improved power supply voltage variation response |
Oct. 6, 2009 |
| 7598811 |
Current-controlled CMOS (C3MOS) fully differential integrated wideband amplifier/equalizer with adjustable gain and frequency response without additional power or loading |
Oct. 6, 2009 |
| 7598987 |
Flicker detection gain control circuit, digital imaging system, and method |
Oct. 6, 2009 |
| 7592869 |
Variable gain amplifier having dual gain control |
Sep. 22, 2009 |
| 7593701 |
Low noise CMOS transmitter circuit with high range of gain |
Sep. 22, 2009 |
| 7587188 |
Radio wave reception device, radio wave clock, and repeater |
Sep. 8, 2009 |
| 7586372 |
Programmable gain-frequency profile amplifier |
Sep. 8, 2009 |
| 7583144 |
Power efficient programmable amplifier |
Sep. 1, 2009 |
| 7583166 |
Inductor Q factor enhancement apparatus has bias circuit that is coupled to negative resistance generator for providing bias signal |
Sep. 1, 2009 |
| 7583143 |
Method and system for digitally controlling transmitter gain compensation |
Sep. 1, 2009 |
| 7579912 |
Method and system for multiple tuner application using a low noise broadband distribution amplifier |
Aug. 25, 2009 |
| 7580687 |
System-in-package wireless communication device comprising prepackaged power amplifier |
Aug. 25, 2009 |
| 7570112 |
Ultrasound imaging or other use variable input impedance preamplifier |
Aug. 4, 2009 |
| 7567125 |
Differential amplifier with multiple signal gains and wide dynamic range |
Jul. 28, 2009 |
| 7560986 |
Variable gain amplifier and method for achieving variable gain amplification with high bandwidth and linearity |
Jul. 14, 2009 |
| 7557657 |
Variable gain amplifier with wide gain variation and wide bandwidth |
Jul. 7, 2009 |
| 7554403 |
Gainboost biasing circuit for low voltage operational amplifier design |
Jun. 30, 2009 |
| 7551023 |
Amplifier with low pass filter feedback |
Jun. 23, 2009 |
| 7551029 |
Transconductance stage providing gain control |
Jun. 23, 2009 |
| 7551033 |
Dynamic bandwidth compensating method and associated apparatus |
Jun. 23, 2009 |
| 7548590 |
Method for determining an offset value for a gain of a transmission path, transmission path with adjustable gain, and use of the transmission path |
Jun. 16, 2009 |
| 7545209 |
Gain adjustment for programmable gain amplifiers |
Jun. 9, 2009 |
| 7545210 |
Gain adjustment for programmable gain amplifiers |
Jun. 9, 2009 |
| 7545213 |
Operational amplifier |
Jun. 9, 2009 |
| 7542530 |
Apparatus and method for controlling a digital automatic gain controller in an orthogonal frequency division multiple access communication system |
Jun. 2, 2009 |
| 7542529 |
Wireless receiving device suppressing occurrence of reception error |
Jun. 2, 2009 |
| 7538612 |
Control circuit for diode based RF circuits |
May. 26, 2009 |
| 7539468 |
Communication terminal device and amplification circuit |
May. 26, 2009 |
| 7536159 |
Automatic gain control using signal and interference power to obtain extended blocking performance |
May. 19, 2009 |
| 7532070 |
Analog variable gain amplifier with improved dynamic range characteristics |
May. 12, 2009 |
| 7525380 |
Method and system for varying gain exponentially with respect to a control signal |
Apr. 28, 2009 |
| 7521997 |
Low-power variable gain amplifier |
Apr. 21, 2009 |
| 7519337 |
Transmitter and mobile communication terminal using the same |
Apr. 14, 2009 |
| 7518453 |
Current sense amplifier for voltage converter |
Apr. 14, 2009 |
| 7518452 |
Voltage-controlled current source and variable-gain amplifier |
Apr. 14, 2009 |
| 7515886 |
Digital broadcast receiving tuner and receiving device incorporating it |
Apr. 7, 2009 |
| 7514665 |
Differential amplifier circuit with rectifier for optical pick-up device |
Apr. 7, 2009 |
| 7511538 |
Data input buffer in semiconductor device |
Mar. 31, 2009 |
| 7504884 |
Automatic gain control apparatus of cable modem, and lock-time acquisition method using the same |
Mar. 17, 2009 |
| 7501893 |
Variable gain amplifier circuit |
Mar. 10, 2009 |
| 7501892 |
Amplifier circuit and communication device |
Mar. 10, 2009 |
| 7501891 |
Variable gain amplifier and differential amplifier |
Mar. 10, 2009 |
| 7501887 |
Controllable amplifier and its use |
Mar. 10, 2009 |
| 7496338 |
Multi-segment gain control system |
Feb. 24, 2009 |
| 7495511 |
Input system for a variable gain amplifier having class-AB transconductance stages |
Feb. 24, 2009 |
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