amb
Headphone CouncilJoined: Apr. 1, 2004
Locale: Sunnyvale, CA. USA
Total Posts: 4408 |  posted 06-26-2007 04:23 AM CST (US)   |  | 
 Prototype boards arrived today, and I built one. This one has AD8397 + OPA690. I only had the opportunity to check a few basic things so far: Quiescent current draw is 25mA, output DC offset is -1.2mV left, -4mV right, and -0.5mV ground (all at minimum volume position). The opamps run cool, and everything seem good so far. Currently the C1L and C1R caps are not populated. I will do more in depth testing to detemine their optimum value, if needed, and to make sure everything else is ok. 
[Edited by amb on 06-26-2007 at 02:11 PM.]
Attachment: C2832.jpg,C2833.jpg |
