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Can be used for fast lownoise measurements or low-noise dc-measurements. Noise at 1Hz is 60x lower compared to the general purpose amp M2/M2m (but drift and input current are slightly higher).
The design is based on a discrete dual JFET-input stage, care should be taken not to damage the input by overloading it (>1V can cause damage).
The amplifier contains no chopper or oscillating circuits that could produce interference
specs:
Input noise voltage: 1.5nV/sqrt Hz >1Hz (2nV@1Hz)
: 50nVpp from 0.1-10Hz
Input noise current: <5fA/sqrtHz
Input bias current : <0.5pA
Temp drift : <1uV/c
Bandwidth : dc..300kHz
gain error : 1% (M2m=0.1%)
