The OP may want to look at this Analogue Devices Webcast on PCB laying out = .... http://r.analog.com/a/hBPO3QUAIyhYWB8f70XANdWrPev/adi3 --=20 Scanned by iCritical. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .