passive i/v conversion with tda1545

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DonJuan

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Joined 2002
hi all

how should i use the tda1545?

i tried passive i/v with 1.5kohm resistor from analog l/r output to "vref" but it didn't work.

"vref" is the middle point of a voltage divider with one 11kohm to iref pin and the other 11kohm wired to 5v. and there is a 0.47uf cap wired from "vref" to gnd.

i haven't tried active i/v yet but will do soon but what will be the suggested i/v resistors? thinking along the lines of 1kohm, 1.5kohm and 2kohm.

anyone tried the above?

thanks.

donjuan
 
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