A low-powered, high-gain amplifier for detector read out is discussed.
The amplifier is fully balanced, differential and symmetrical in circ
uit topology and layout, making it radiation tolerant and relatively i
nsensitive to varying magnetic fields in the large detector. The circu
it has a differential gain of 110 mv/4fC, an average 10/90% rise time
of 19 ns, a noise figure of root(500(2)+100(2)) x C-t(1.08) electrons
and a power consumption of 750 mu W. the circuit was implemented in th
e radiation hard SOI BiCMOS technology of DMLL.