Title :
A low noise differential BiCMOS preamplifier for telecommunications
Author :
Rankinen, Riitta ; Kostamovaara, Juha
Author_Institution :
Dept. of Electr. Eng., Oulu Univ., Finland
Abstract :
A low-noise preamplifier with differential input and differential output is designed for a telecommunications application. Simulated input referred noise is less than 7 nV/√Hz. The gain of 25 is set by resistive feedback. Simulations show the linear output range of the operational amplifier designed for the preamplifier to be ±5.5 V when the balance level is O V, and the DC amplification is 96 dB. The phase margin is 86° if an amplification of 25 is used. Simulated white noise at the input to the operational amplifier is <4 nV/√Hz
Keywords :
BIMOS integrated circuits; differential amplifiers; operational amplifiers; preamplifiers; telecommunication equipment; 90 kHz; DC amplification; differential BiCMOS preamplifier; differential input; differential output; low-noise preamplifier; operational amplifier; resistive feedback; simulated white noise; telecommunications; BiCMOS integrated circuits; Circuit noise; Circuit simulation; Feedback; Filters; Frequency; Low-noise amplifiers; Operational amplifiers; Preamplifiers; Telecommunications;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176050
