EMRFD Message Archive 227

Message Date From Subject
227 2006-12-08 09:24:57 Hari G Spectrumanalyzer 3356chip
Hi ,
 I have tried duplicating the 3356 detector portion of the SA for a sweep plotter, but gain is less when i  use a 470Ohmto GND  as in the original circuit.
If  i usea 6k8 the gain is ok and iam getting the full range.The opamp is having 4k7 in feed back and to GND. Any ideas ? 
De Hari
233 2006-12-12 16:21:24 jr_dakota Re: Spectrumanalyzer 3356chip
Do you have a problem getting an AD8307? I think the reas