Current controlled transconducting inverting amplifiers

摘要

An amplifier including a first transistor of a first conduction type; a second transistor of a second conduction type, the second transistor being coupled to the first transistor; an input for receiving an input signal, a control terminal of the first transistor being coupled to a control terminal of the second transistor, the control terminals being coupled to the input; an output for outputting an output signal, the output being coupled to the first transistor and the second transistor; and a current supply coupled to the first transistor and configured to supply current so as to cause a predetermined transconductance of the amplifier.

主权项

1. A low noise amplifier comprising:
a first amplifier comprising:
a first transistor of a first conduction type;a second transistor of a second conduction type, the second transistor being coupled to the first transistor;an input for receiving an input signal, a control terminal of the first transistor being coupled to a control terminal of the second transistor, said control terminals being coupled to the input;an output for outputting an output signal, the output being coupled to the first transistor and the second transistor; anda current supply coupled to the first transistor and configured to supply current so as to cause a predetermined transconductance of the amplifier; and a second amplifier comprising:
a first transistor of a first conduction type;a second transistor of a second conduction type, the second transistor being coupled to the first transistor;an input for receiving an input signal, a control terminal of the first transistor being coupled to a control terminal of the second transistor, said control terminals being coupled to the input;an output for outputting an output signal, the output being coupled to the first transistor and the second transistor; anda current supply coupled to the first transistor and configured to supply current so as to cause a predetermined transconductance of the amplifier, the input terminals of the first and second amplifiers being coupled together, the current supply of the first and second amplifiers being configured to supply the same amount of current as each other.