Title :
The seemingly paradoxical noise behavior of some active circuits
Author :
Vargas, Manuel ; Pallas-Areny, R.
Author_Institution :
Dept. of Electron. Eng., Univ. Politecnica de Catalunya, Barcelona, Spain
fDate :
10/1/1994 12:00:00 AM
Abstract :
The equivalent input noise for some active circuits does not increase when the signal bandwidth increases or when some of their resistors have a larger value. This seemingly paradoxical behavior is caused by the different transfer functions for the signal and the respective noise sources associated with these resistors
Keywords :
active filters; active networks; bootstrap circuits; buffer circuits; network analysis; random noise; resistors; transfer functions; AC coupled bootstrap buffer; ECG signal; active circuits; equivalent input noise; noise analysis; noise sources; paradoxical noise behavior; resistors; signal bandwidth; transfer functions; voltage controlled voltage source; Active circuits; Active noise reduction; Circuit noise; Frequency; Low-frequency noise; Operational amplifiers; Resistors; Thermal resistance; Transfer functions; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
