From: pcdhSpamMeSenseless@electrooptical.net   
      
   Hi, all,   
      
   I'm doing a high-accuracy version of the laser noise canceller   
   .   
      
   In particular, to get better cancellation accuracy, I want to get rid of   
   the input offset voltages of a couple of op amps.   
      
   One approach to this is to use a chopamp integrator to snoop the summing   
   junction, and dork the noninverting input to force the summing junction   
   to average 0.00000V.   
      
   This is nice conceptually, but there are a couple of worries:   
      
   1. Chopamps kick out nasty switching spikes, which will have to be   
   decoupled sufficiently well.   
      
   2. Weird-ass composite amplifiers always have weird settling behavior.   
      
   I haven't done this lately, but I'm thinking of a TLV2333.   
      
   Any wisdom?   
      
   Thanks   
      
   Phil Hobbs   
      
   --   
   Dr Philip C D Hobbs   
   Principal Consultant   
   ElectroOptical Innovations LLC / Hobbs ElectroOptics   
   Optics, Electro-optics, Photonics, Analog Electronics   
   Briarcliff Manor NY 10510   
      
   http://electrooptical.net   
   http://hobbs-eo.com   
      
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