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Class Information
Number: 330/252
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including differential amplifier
Description: Subject matter including an amplifier having two similar input circuits so connected that they respond to the difference between two voltages or currents, but effectively suppress like voltages or currents.










Sub-classes under this class:

Class Number Class Name Patents
330/258 Having common mode rejection circuit 721
330/257 Having current mirror amplifier 1,016
330/259 Having d.c. feedback bias control for stabilization 344
330/253 Having field effect transistor 1,636
330/254 Having gain control means 1,021
330/261 Having particular biasing arrangement 932
330/255 Having push-pull amplifier stage 699
330/260 Having signal feedback means 841
330/256 Having temperature compensation means 182


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Patent Number Title Of Patent Date Issued
8704596 Difference amplifier arrangement with transconductance amplifier based current compensation Apr. 22, 2014
8692583 Differential integrated input circuit Apr. 8, 2014
8692616 Operational amplifier, analog arithmetic circuit, and analog to digital converter Apr. 8, 2014
8692615 Enhanced transconductance circuit Apr. 8, 2014
8680938 Apparatus and method for equalization Mar. 25, 2014
8674764 High-frequency power amplifying device Mar. 18, 2014
8669810 Time difference amplifier and amplification method using slew rate control Mar. 11, 2014
8659322 Memory having a latching sense amplifier resistant to negative bias temperature instability and method therefor Feb. 25, 2014
8653894 Push-pull amplifier having inductive common mode decoupling Feb. 18, 2014
8649749 RF receiver with voltage sampling Feb. 11, 2014
8633770 Current sense amplifier having bipolar common mode input range Jan. 21, 2014
8629727 Techniques on input transformer to push the OP1dB higher in power amplifier design Jan. 14, 2014
8624671 Audio amplifying circuit with improved noise performance Jan. 7, 2014
8619838 In line signal repeaters for transmission line based electric fences Dec. 31, 2013
8611466 Discrete time receiver Dec. 17, 2013
8582787 Preamplifier circuit for a microelectromechanical capacitive acoustic transducer Nov. 12, 2013
8576214 Display device Nov. 5, 2013
8565675 Near field RF communicators and near field RF communications-enabled devices Oct. 22, 2013
8554162 High efficiency power amplifier Oct. 8, 2013
8536945 Differential output stage Sep. 17, 2013
8536944 Differential amplifier with de-emphasis Sep. 17, 2013
8521221 Dual mode RF transceiver and receiving method of the same Aug. 27, 2013
8519785 Differential amplifier with duty cycle compensation Aug. 27, 2013
8503960 Amplifier and associated receiver Aug. 6, 2013
8503966 Semiconductor integrated circuit and receiving apparatus Aug. 6, 2013
8497709 Input/output circuit and system Jul. 30, 2013
8487921 Display panel driver and display apparatus using the same Jul. 16, 2013
8487699 Inductive-element feedback-loop compensator Jul. 16, 2013
8482265 Current balance circuit utilizing multiplexers and triangular wave generators Jul. 9, 2013
8466742 Large time constant steering circuit and instrumentation amplifier implementing same Jun. 18, 2013
8456197 Differential data sensing Jun. 4, 2013
8456235 Regulator circuit Jun. 4, 2013
8433259 Gyrator circuit, wide-band amplifier and radio communication apparatus Apr. 30, 2013
8427355 Time-interleaved pipelined-SAR analog to digital converter with low power consumption Apr. 23, 2013
8422981 Multi-band low noise amplifier and multi-band radio frequency receiver including the same Apr. 16, 2013
8400095 Constant-speed control circuit for BLDC motors Mar. 19, 2013
8395451 Low 1/f noise high-frequency broadband amplifier (DC-12 GHz) Mar. 12, 2013
8373503 Third order intermodulation cancellation for RF transconductors Feb. 12, 2013
8368467 Cascode amplifier with increased linearity Feb. 5, 2013
8369818 Low noise amplifier protection using a clamping device Feb. 5, 2013
8362939 Switched-capacitor pipeline ADC stage Jan. 29, 2013
8354887 Charge compensation for operational transconductance amplifier based circuits Jan. 15, 2013
8339198 Negative capacitance synthesis for use with differential circuits Dec. 25, 2012
8339296 Amplifying circuit and analog-digital converting circuit including same Dec. 25, 2012
8339197 Circuitry including matched transistor pairs Dec. 25, 2012
8330500 Comparator Dec. 11, 2012
8331890 Duty-to-voltage amplifier, FM receiver and method for amplifying a peak of a multiplexed signal Dec. 11, 2012
8324555 Nanoelectronic differential amplifiers and related circuits implemented on a segment of a graphene nanoribbon Dec. 4, 2012
8319552 Rail-to-rail output stage with balanced drive Nov. 27, 2012
8319551 Method and system for improving limiting amplifier phase noise for low slew-rate input signals Nov. 27, 2012

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17










 
 
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