saint gillis
Well-known member
Dear all,
I found these kind of very cheap NPN transistor matched pairs :
http://www.mouser.com/ds/2/115/ds30311-19227.pdf
http://www.mouser.com/ds/2/302/BCM847BV_BS_DS-352886.pdf
The matching accuracy is not so far from a THAT300 array or an SSM2210 / SSM2212 for instance...
I'm looking for a matched pair to make an exponential current converter for a VCO, something like that :
http://schmitzbits.de/expo_tutorial/index.html
So I'm not looking for something for an audio differential receiver... only a stable VC current source
What do you think of the cheap components above?
I found these kind of very cheap NPN transistor matched pairs :
http://www.mouser.com/ds/2/115/ds30311-19227.pdf
http://www.mouser.com/ds/2/302/BCM847BV_BS_DS-352886.pdf
The matching accuracy is not so far from a THAT300 array or an SSM2210 / SSM2212 for instance...
I'm looking for a matched pair to make an exponential current converter for a VCO, something like that :
http://schmitzbits.de/expo_tutorial/index.html
So I'm not looking for something for an audio differential receiver... only a stable VC current source
What do you think of the cheap components above?