CurrentFeedback Op Amps Save Power In Photodiode Apps :
09/30/02 Electronic Design - Ideas for Design / Current-feedback
amplifiers offer high bandwidth with minimal power-supply
current draw. However, they're rarely used as transimpedance
amplifiers in photodiode applications due to the high current
noise of their inverting inputs. The ...
Time tag impulses with zero crossing circuit: 01/24/2002
EDN - Design Ideas / A "constant-fraction discriminator" usually
performs the time-tagging of impulsive events, which have a
peaking time of the signal amplitude. The implementation of this
technique requires a delay in the input signal of approximately
the same amount as the signal's rise time. You can attain this
delay by using a coaxial cable of an appropriate length. .