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Class Information
Number: 330/255
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including differential amplifier > Having push-pull amplifier stage
Description: Subject matter including an amplifier which has two identical signal branches connected so as to operate in phase opposition and with input and output connections, each balanced to ground.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
8711831 Front end for RF transmitting-receiving systems with implicit directional control and time-multiplexing method in submicron technology Apr. 29, 2014
8692616 Operational amplifier, analog arithmetic circuit, and analog to digital converter Apr. 8, 2014
8674765 Fully differential amplifier topology to drive dynamic speakers in class AB mode Mar. 18, 2014
8665020 Differential amplifier circuit that can change current flowing through a constant-current source according to load variation, and series regulator including the same Mar. 4, 2014
8653893 Output circuit, data driver circuit and display device Feb. 18, 2014
8588433 Electret microphone circuit Nov. 19, 2013
8536947 Class AB amplifier with resistive level-shifting circuitry Sep. 17, 2013
8531242 Operational amplifier with overdriving circuit and method for same Sep. 10, 2013
8493150 Class-AB output stage Jul. 23, 2013
8487695 Differential source follower having 6dB gain with applications to WiGig baseband filters Jul. 16, 2013
8487687 Output buffer circuit and method for avoiding voltage overshoot Jul. 16, 2013
8482351 Power amplifier and method for amplifying signal based on power amplifier Jul. 9, 2013
8471633 Differential amplifier and data driver Jun. 25, 2013
8461927 Power amplification circuit having transformer Jun. 11, 2013
8451060 Amplifier device May. 28, 2013
8446228 Oscillator circuit May. 21, 2013
8441318 Push-pull low noise amplifier with variable gain, push-pull low noise amplifier with common gate bias circuit and amplifier with auxiliary matching May. 14, 2013
8436682 Fourth-order electrical current source apparatus, systems and methods May. 7, 2013
8427236 Operational amplifier, driver and display Apr. 23, 2013
8417200 Wideband power efficient high transmission power radio frequency (RF) transmitter Apr. 9, 2013
8405459 Folded cascode differential amplifier and semiconductor device Mar. 26, 2013
8395448 Apparatus and method for miller compensation for multi-stage amplifier Mar. 12, 2013
8390609 Differential amplifier and drive circuit of display device using the same Mar. 5, 2013
8384479 Partial cascode in combination with full cascode operational transconductance amplifier Feb. 26, 2013
8368468 Error amplifier and LED circuit comprising the same Feb. 5, 2013
8363045 Class AB amplifier circuit and display apparatus Jan. 29, 2013
8344808 Non-linear capacitance compensation Jan. 1, 2013
8339296 Amplifying circuit and analog-digital converting circuit including same Dec. 25, 2012
8330537 Low noise, high CMRR and PSRR input buffer Dec. 11, 2012
8330544 Power amplification circuit having transformer Dec. 11, 2012
8319552 Rail-to-rail output stage with balanced drive Nov. 27, 2012
8310309 Noise-canceling for differential amplifiers requiring no external matching Nov. 13, 2012
8310428 Display panel driving voltage output circuit Nov. 13, 2012
8310307 Amplifying circuit Nov. 13, 2012
8310306 Operational amplifier Nov. 13, 2012
8289302 Output buffer circuit with enhanced slew rate Oct. 16, 2012
8283981 Operational amplifier having a common mode feedback circuit portion Oct. 9, 2012
8264277 Differential amplifier circuit Sep. 11, 2012
8237468 Driver calibration methods and circuits Aug. 7, 2012
8222957 Differential amplifier circuit, display panel driver, and display device Jul. 17, 2012
8217925 Display panel driver and display device Jul. 10, 2012
8217721 Slew rate enhancing circuit Jul. 10, 2012
8193861 Differential amplifier Jun. 5, 2012
8193862 Operational amplifier Jun. 5, 2012
8193865 Output circuit using analog amplifier Jun. 5, 2012
8195104 Electronic amplification device with current mirror for integrated power amplifiers Jun. 5, 2012
8188955 Source driving circuit with output buffer May. 29, 2012
8189815 Microphone circuit May. 29, 2012
8174321 Apparatus and method for miller compensation for multi-stage amplifier May. 8, 2012
8174317 Fully-differential amplifier circuit May. 8, 2012

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