Title :
A wideband current-mode variable gain-control circuit
Author_Institution :
Elantec Inc., Milpitas, CA, USA
Abstract :
A wideband variable gain control circuit with current rather than voltage inputs and output is described. The gain control is shown to achieve better than 9-b linearity with 150-MHz small- and large-signal bandwidth. Operation is extremely flexible, with voltage or current signals at the inputs and output. While the bandwidth decreases at low gains, a 50-MHz -3 dB bandwidth is maintained over a gain range of 24 dB
Keywords :
bipolar integrated circuits; gain control; linear integrated circuits; 150 MHz; 24 dB; 50 MHz; current-mode; variable gain-control circuit; wideband; Attenuation; Bandwidth; Circuits; Frequency; Gain control; Linearity; Operational amplifiers; Transconductance; Voltage; Wideband;
Conference_Titel :
Bipolar Circuits and Technology Meeting, 1991., Proceedings of the 1991
Conference_Location :
Minneapolis, MN
Print_ISBN :
0-7803-0103-X
DOI :
10.1109/BIPOL.1991.160994
