Title :
A DC to 1-GHz differential monolithic variable-gain amplifier
Author :
Meyer, Robert G. ; Mack, William D.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
A monolithic bipolar variable-gain amplifier with 25-dB maximum differential gain and over 30 dB of gain-control range operating in the DC to 1-GHz frequency range is described. The circuit has a 9.3-dB noise figure from a 50 Ω source, an output third-order intercept of +13.5 dBm at high gain, and an input third-order intercept of +6 dBm at low gain. The gain varies linearly as the gain-control voltage varies from 0 to 1 V and the gain is insensitive to supply and temperature variations for a given gain-control setting. Power consumption is 225 mW from a single 5-V supply
Keywords :
bipolar integrated circuits; differential amplifiers; gain control; wideband amplifiers; 0 to 1 GHz; 0 to 1 V; 225 mW; 25 dB; 5 V; 9.3 dB; bipolar variable-gain amplifier; differential amplifiers; differential gain; gain-control range; gain-control voltage; input third-order intercept; monolithic variable-gain amplifier; noise figure; output third-order intercept; Bandwidth; Circuit topology; Differential amplifiers; Dynamic range; Frequency; Gain control; Photonic band gap; Resistors; Temperature; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
