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Current stability of ADN2830?

Question asked by uys on Mar 5, 2014
Latest reply on Mar 6, 2014 by uys

Hi everyone,

Does anyone know what the current stability is of the power controller ADN2830, when operating to control constant current, rather than constant power?


Here is my application:  We'd like to use an ADN2830 eval board as a current controller for an external cavity diode laser (ECDL).  ECDLs output light with a very well defined wavelength (typically the linewidths are on the order of 100kHz to 1MHz over a few microseconds).  To achieve this the laser diode current needs to be very stable, e.g. a current drift of <10 microA over a second.  Will ADN2830 achieve this stability or better?