Notes about problems with MCM 257

MCM257 was originally tested 19-Jan-00. It is from Lot 5 and has only minimal set of surface mount components when tested that day. All channels in all blocks have very bad resolution. It cannot be said it really respond to calibration injection because of the very bad resolution. However all channels gives reasonable ADC values. Will the dditional bypass caps get the noise away?


updated 20-Jan-2000
Sangsu Ryu (ryu@p2hp2.lanl.gov)