thanks for the input! so i guess its a question of what board? will teensy 3.0 be safe?
i took a look at this datasheet, but im fairly new to terminology, http://dlnmh9ip6v2uc.cloudfront.net/dat ... 0SF0RM.pdf
page 929 mentions "avdd331 3.3 V regulated analog supply", is this what im looking for? they speak plenty of how the USB regulated