Help needed! I need to identify an unknown chip! A customer of mine sold until now a lot of electronic units from a company in the USA which disappeared from the market totally some months ago. These units fail often after some days of operation (about 50%) and my customer has to fulfil the warranty. To fulfil this warranty, he asked me for reverse-engineering this unit. Then we would be able to build replacement boards and perhaps to figure out why about the half of the original units fails after some days of operation. The problem is, the whole units were filled with (I assume Polyurethane) coating and after dissolving it, we found some analog circuitry and a 16 pin IC with removed labels. Because there exist no schematics or other documentation, I try to figure out which IC it might be. We opened the IC and took some photographs from the chip. The first idea (according to the citcuitry around) was XR2206 from EXAR, but EXAR said no. On the chip you can find to numeric signs, "8025" and "L7501". Does anybody know of a company or other institution which collects chip codes and which could help me to identify the chip? Any other ideas? You can find the pictures on my website http://www.mansfeld-elektronik.de/unknown.htm. Please be aware there are 5 jpg files with together about 1MB size... Many many thanks in advance Regards Matthias Mansfeld ----------------------------------------------- Matthias Mansfeld Elektronik * Leiterplattenlayout, Bestueckung Am Langhoelzl 11, 85540 Haar; Tel.: 089/4620 093-7, Fax: -8 Internet: http://www.mansfeld-elektronik.de ################################################################ DesignerCouncil E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE DesignerCouncil <your full name> To unsubscribe: SIGNOFF DesignerCouncil ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################