Hi: What's the best way to utilize a set of measured transistors for QP1-12 in Legato 3.1? I measured Vgs on a small set of TP0604 (Fluke 287, -12V through 150R 5W resistors sourced from by a DP832A). The set is sorted by Vgs. I think of using (7,6,25,2,13,4) for QP1-QP6 and (12,18,23,10,24,1) for QP7-QP12. Is there a better way to use the measured parts for the build? [b]ID Vgs [/b] 17 2.2619 22 2.2684 8 2.2685 3 2.2693 5 2.2739 19 2.2769 15 2.2795 16 2.2798 [h][i]7 2.2912 6 2.2927 25 2.2927 2 2.2938 13 2.294 4 2.2946[/i][/h] 11 2.3075 14 2.3105 21 2.3168 20 2.3426 [h][i]12 2.3602 18 2.3635 23 2.3637 10 2.3639 24 2.3661 1 2.3771[/i][/h] 9 2.3839

Matching is actually not all that critical - but it may help a tiny bit. :) The reason is two fold - the FETs are in parallel - and it is a differential signal with no feedback.