Title :
A very high impedance wide-band buffer amplifier
Author :
Barker, R.W.J. ; Hart, B.L.
Abstract :
A dc-coupled unity-gain buffer amplifier capable of zero offset is described. Using a dual MOST device in a bootstrapped differential source-follower configuration, together with a monolithic integrated circuit amplifier, it has an input current of 13 × 10-15A and a 3 dB bandwidth of 4 MHz. Drift is approximately 100 µV/°C and input capacity 0.4 pF.
Keywords :
Bandwidth; Broadband amplifiers; Buffer storage; Circuit stability; Coupling circuits; Feedback circuits; Impedance; Instruments; Temperature; Voltage;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1969.6944
