Power amplifier and semiconductor integrated circuit

Tracking power supply, method for controlling power supply, and communication apparatus

System and method for sensing an amplifier load current

Method and apparatus for accurately measuring currents using on chip sense resistors

Power supply method, apparatus, and system for a radio frequency power amplifier

ENVELOPE DETECTOR, LINEARIZATION CIRCUIT, AMPLIFIER CIRCUIT, METHOD FOR DETECTING A MODULATION ENVELOPE AND WIRELESS COMMUNICATION UNIT

Amplifying circuit, AC signal amplifying circuit and input bias adjusting method

Low dissipation amplifier

Power circuit used for an amplifier

RF amplification device

Current sense amplifier

Voltage clamp

Method and circuit for protecting a MOSFET

Power amplifier

Systems and methods for switching mode power amplifier control

High-efficiency envelope tracking systems and methods for radio frequency power amplifiers

Current limiting circuit for RF power amplifier

Systems and arrangements for sensing current with a low loss sense element

Shared linearity maintenance in power amplifiers

Amplifier

Differential amplification circuit and manufacturing method thereof

Circuit for inhibiting over-current in power amplifier

High power RF solid state power amplifier system

Alternating current level detection circuit

Power amplifier amplitude modulator system and method

RF power sensing circuit

Device

Communication method for vacuum tube replacement devices

RF transmitter with compensation of differential path delay

RF power amplifier mirror circuit for sensing current

Adaptive protection circuit for a power amplifier

Electronic device with an amplifier output stage and an over-current detection means

Fast and accurate sensing amplifier for low voltage semiconductor memory

Shared linearity maintenance in power amplifiers

Methods and apparatus to detect impedance at an amplifier output

PROTECTION AND AUTOMATIC RECOVERY CIRCUIT SYSTEM

Multi-mode amplitude modulator control method

Method and system for precise current matching in deep sub-micron technology

Low-voltage, low-power-consumption, and high-speed differential current-sense amplification

Device and method including current measurement and/or amplification

Sense amplifier circuit for low voltage applications

Wide input common mode for input bias current cancellation

Sense amplifiers with high voltage swing

System and method for power amplifier output power control

System and method for power amplifier output power control

Input offset voltage corrector

Protected digital audio driver

Systems and arrangements for sensing current with a low loss sense element

Current detection circuit

Low-power high-PSRR current-mode microphone pre-amplifier system and method

Auto-range current mirror circuit

Circuit for accurately controlling power amplifier output power

Expanded performance and functions for vacuum tube replacement devices

Output power control of an RF amplifier

Galvanically isolated direct current transducer

Differential amplifying system

System and method for current overload response with class D topology

Sense amplifier

Digital feedback to improve the sound reproduction of an electro-dynamic loudspeaker

Overcurrent detection circuit and switching circuit

System and method for compensating for the effects of aging and temperature on transistor performance

Current sensing circuit and boost converter having the same

Class AB enhanced transconductance source follower

Operational amplifier with zero offset

Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit

Amplifier circuit

Method and apparatus for controlling the output power of a power amplifier

Power amplifier and wireless communication device

Protection circuit

Technique for determining a load current

Digital baseband system and process for compensating for analog radio transmitter impairments

Indicators for vacuum tube replacement devices

Current sensor using level shift circuit

Power amplifier arrangement, particularly for mobile radio, and method for determining a performance parameter

Methods and apparatus for reducing output current oscillations of a driver provided with circuitry that senses and responds to excessive current draws of an output stage of the driver

DC to DC converter and voltage detecting circuit and current detecting circuit thereof

Systems and methods for driving an output transistor

PFM control circuit for DC regulator

Apparatus for current measuring and a resistor

Method of verifying preamplifier circuit functions, and magnetic record regeneration apparatus using the same

Compensation of nonlinearity introduced by dead time in switching output stage

Output power detection circuit

Power control circuit for accurate control of power amplifier output power

Sense amplifiers with high voltage swing

Overcurrent detecting apparatus

Light receiving device for optical communication system

Distributed active transformer power control techiques

Current to voltage amplifier

Apparatus and method of limiting power applied to a loudspeaker

Class AB enhanced transconductance source follower

Overcurrent protection in amplifier topologies employing DC isolation

Transmission device with digital predistortion, and method for regulating predistortion in a transmission device

Method and apparatus providing integrated load matching using adaptive power amplifier compensation

Method and apparatus for controlling the output power of a power amplifier

Audio power source with improved efficiency

Dynamically controlled auto-ranging current sense circuit

Signal process circuit capable of being externally coupled to multiple types of amplifier circuits

System for voltage standing wave ratio (VSWR) measurement

Phased array antenna system

Load current sensing circuit for class-D amplifier

Transconductor systems

Adaptive biasing control for radio frequency power amplifiers

Wireless communication device and wireless communication method

Amplification systems

Linear amplifier with extended linear output range

Current-mode sense amplifier

Current-mode sense amplifier

System, apparatus, and method for sense amplifiers

Sense-amplifier driving device and semiconductor device including the same