Amplifier suitable for low supply voltage operation

Amplifier suitable for use in a radiotelephone

Amplifier supporting multiple gain modes

Amplifier switching control circuit and method for current...

Amplifier system

Amplifier system and method

Amplifier system and method

Amplifier system for low level sensor signal

Amplifier system having a constant current regulating unit

Amplifier system having compensated amplification variation

Amplifier system switchable between two amplifying operations

Amplifier system switchable between two amplifying operations

Amplifier system with AGC, as for an AM radio

Amplifier system with automatic distortion control

Amplifier system with controlled reactance

Amplifier system with dynamically-adjusted supply voltage

Amplifier systems with low-noise, constant-transconductance...

Amplifier that is driven in a complementary manner

Amplifier using a follower transistor

Amplifier using a single polarity power supply and including dep