Assignee
WOLFSON MICROELECTRONICS PLC
GB71 patents
Top patents by PatentIndex Score
US7856804B2Dec 28, 2010
MEMS process and device
WOLFSON MICROELECTRONICS PLC120 citations96
US7781249B2Aug 24, 2010
MEMS process and device
WOLFSON MICROELECTRONICS PLC175 citations96
US7714660B2May 11, 2010
Amplifier circuit and methods of operation thereof
WOLFSON MICROELECTRONICS PLC41 citations96
US8737171B2May 27, 2014
MEMS device and process
WOLFSON MICROELECTRONICS PLC30 citations95
US7990742B2Aug 2, 2011
Charge pump circuit and methods of operation thereof
WOLFSON MICROELECTRONICS PLC33 citations93
US7723965B2May 25, 2010
DC-DC converter circuits, and methods and apparatus including such circuits
WOLFSON MICROELECTRONICS PLC28 citations93
US6856202B2Feb 15, 2005
Phase/frequency detector and phase lock loop circuit
WOLFSON MICROELECTRONICS PLC59 citations93
US8987844B2Mar 24, 2015
MEMS device and process
WOLFSON MICROELECTRONICS PLC14 citations92
US7626374B2Dec 1, 2009
Voltage reference circuit
WOLFSON MICROELECTRONICS PLC36 citations92
US7626445B2Dec 1, 2009
Charge pump circuit and methods of operation thereof
WOLFSON MICROELECTRONICS PLC34 citations92
US7622984B2Nov 24, 2009
Charge pump circuit and methods of operation thereof
WOLFSON MICROELECTRONICS PLC34 citations92
US6952176B2Oct 4, 2005
Digital-to-analogue converter circuits
WOLFSON MICROELECTRONICS PLC23 citations92
US9300212B2Mar 29, 2016
DC-DC converters operable in a discontinuous switching mode
WOLFSON MICROELECTRONICS PLC23 citations91
US7885422B2Feb 8, 2011
Audio device and method
WOLFSON MICROELECTRONICS PLC25 citations91
US7765019B2Jul 27, 2010
Portable wireless telephony device
WOLFSON MICROELECTRONICS PLC18 citations91
US7605574B2Oct 20, 2009
Switching regulator circuits
WOLFSON MICROELECTRONICS PLC33 citations91
US7376778B2May 20, 2008
Audio device
WOLFSON MICROELECTRONICS PLC24 citations91
US7583774B2Sep 1, 2009
Clock synchroniser
WOLFSON MICROELECTRONICS PLC16 citations90
US7205917B2Apr 17, 2007
Pulse width modulator quantisation circuit
WOLFSON MICROELECTRONICS PLC23 citations90
US7102557B1Sep 5, 2006
Switched capacitor DAC
WOLFSON MICROELECTRONICS PLC53 citations89
US7030699B2Apr 18, 2006
Amplifier
WOLFSON MICROELECTRONICS PLC45 citations89
US7106240B2Sep 12, 2006
Analogue to digital converter
WOLFSON MICROELECTRONICS PLC32 citations86
US7348840B2Mar 25, 2008
Feedback controller for PWM amplifier
WOLFSON MICROELECTRONICS PLC29 citations85
US9306448B2Apr 5, 2016
Amplifier circuit and methods of operation thereof
WOLFSON MICROELECTRONICS PLC3 citations84
US9236794B2Jan 12, 2016
Charge pump circuit and methods of operations thereof
WOLFSON MICROELECTRONICS PLC11 citations84
US8045724B2Oct 25, 2011
Ambient noise-reduction system
WOLFSON MICROELECTRONICS PLC14 citations84
US7301401B2Nov 27, 2007
Low noise op amp
WOLFSON MICROELECTRONICS PLC11 citations84
US7295053B2Nov 13, 2007
Delay-locked loop circuits
WOLFSON MICROELECTRONICS PLC19 citations84
US7777457B2Aug 17, 2010
Constant frequency current-mode buck-boost converter with reduced current sensing
WOLFSON MICROELECTRONICS PLC17 citations83
US7301347B2Nov 27, 2007
Current sensing circuit
WOLFSON MICROELECTRONICS PLC13 citations83
US7884558B2Feb 8, 2011
Driver apparatus and method
WOLFSON MICROELECTRONICS PLC13 citations81
US7884557B2Feb 8, 2011
Protection circuit and method
WOLFSON MICROELECTRONICS PLC14 citations81
US7804434B2Sep 28, 2010
Switched-capacitor circuit
WOLFSON MICROELECTRONICS PLC22 citations80
US7649480B2Jan 19, 2010
Calibration circuit and associated method
WOLFSON MICROELECTRONICS PLC11 citations80
US7402986B2Jul 22, 2008
Power supply circuit for portable battery powered device
WOLFSON MICROELECTRONICS PLC9 citations80
US7573152B2Aug 11, 2009
Power sequencing circuit
WOLFSON MICROELECTRONICS PLC9 citations78
US7579894B2Aug 25, 2009
Debounce circuit and method
WOLFSON MICROELECTRONICS PLC14 citations77
US9786264B2Oct 10, 2017
Ambient noise reduction arrangements
WOLFSON MICROELECTRONICS PLC2 citations73
US9154868B2Oct 6, 2015
Noise cancellation system
WOLFSON MICROELECTRONICS PLC10 citations73
US8742970B2Jun 3, 2014
Analogue-to-digital converter
WOLFSON MICROELECTRONICS PLC6 citations73
US8373506B2Feb 12, 2013
Amplifier circuit and methods of operation thereof
WOLFSON MICROELECTRONICS PLC2 citations73
US7466831B2Dec 16, 2008
Audio processing
WOLFSON MICROELECTRONICS PLC7 citations71
US7061415B2Jun 13, 2006
Word length reduction circuit
WOLFSON MICROELECTRONICS PLC10 citations71
US7113042B2Sep 26, 2006
Low noise op amp
WOLFSON MICROELECTRONICS PLC8 citations70
US9363610B2Jun 7, 2016
MEMS process and device
WOLFSON MICROELECTRONICS PLC3 citations69
US9473098B2Oct 18, 2016
Amplifier circuit
WOLFSON MICROELECTRONICS PLC2 citations63
US9281827B2Mar 8, 2016
Clock generator
WOLFSON MICROELECTRONICS PLC1 citations63
US9019012B2Apr 28, 2015
Amplifier circuit with offset control
WOLFSON MICROELECTRONICS PLC2 citations63
US8988149B2Mar 24, 2015
Amplifier circuit and method of amplifying a signal in an amplifier circuit
WOLFSON MICROELECTRONICS PLC2 citations63
US7994763B2Aug 9, 2011
DC-DC converter circuits, and methods and apparatus including such circuits
WOLFSON MICROELECTRONICS PLC2 citations63
Showing the top 50 of 71 patents by PatentIndex Score.