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boxymoron · 14th February 2008, 10:33 PM

I just recieved my pmc4222 eval board on the mail. I also ordered a power supply kit for the +/- 15v and +5v lines, and a digital coax cable. Next will be assembling the power supply and building a nice rack enclosure from par-metal, which is actually about 10 miles away.

Btw, I was looking at an application note from maxim semiconductor which provides details for a 6nV/sqrt(Hz) noise density performance regulator using a high precision opamp and voltage reference. The only problem is that the voltage reference chip comes in smd only (I think), which makes it almost impossible to diy. I'm also thinking about adding some kind of metering at the inputs,to monitor levels, since the eval board doesn't have any kind of clipping protection. Eventually I would like to implement digital decimation and low-pass filtering with DSP, along with a digital limiting/soft saturation algorithm using the 6-bit outputs from the board and a DSP eveluation board.

14th February 2008, 10:33 PM	#8
boxymoron Gear nut Join Date: Feb 2007 Location: next to NYC Posts: 116	I just recieved my pmc4222 eval board on the mail. I also ordered a power supply kit for the +/- 15v and +5v lines, and a digital coax cable. Next will be assembling the power supply and building a nice rack enclosure from par-metal, which is actually about 10 miles away. Btw, I was looking at an application note from maxim semiconductor which provides details for a 6nV/sqrt(Hz) noise density performance regulator using a high precision opamp and voltage reference. The only problem is that the voltage reference chip comes in smd only (I think), which makes it almost impossible to diy. I'm also thinking about adding some kind of metering at the inputs,to monitor levels, since the eval board doesn't have any kind of clipping protection. Eventually I would like to implement digital decimation and low-pass filtering with DSP, along with a digital limiting/soft saturation algorithm using the 6-bit outputs from the board and a DSP eveluation board.