Patent ID: 6078219
Filing Date: 2000-06-20
Classification: H03G

Abstract:
A wide range single stage variable gain amplifier for receiving an input signal and outputting an amplitude varied version of the received input signal, said wide range single stage variable gain amplifier comprising:an input circuit receiving an input signal and developing an input current;a first control circuit including a first switching circuit and a first pass circuit receiving the input current and selectively controllable to output an attenuated version of the input current;a second control circuit including a second switching circuit and a second pass circuit directly connected to the first control circuit receiving the attenuated input current, said second control circuit selectively controllable in response to a variable gain control input to output a further attenuated version of the attenuated input circuit, an attenuation amount of the further attenuated version being variable as determined by the variable gain control input; andan output circuit receiving the further attenuated input current and developing an amplitude varied version of the received input signal.