Tda1543=>opa2604

[sparkle]

Hi guys!
I have a pair of OPA2604 chips. How about using them like in datasheets for TDA1543 for i/v conversion? Any yes and no's?
thanks
daniel

 

[sparkle]

 

[Mad_K]

I'm using one 2604 like in the 1543 datasheet: It simply blows me away! Go ahead and try it, you won't be dissapointed. Use a 3K3 resistor from Vref to gnd. 😉

 

[sparkle]

YEES!

Thanks Mad_K; one thing what is the power supply of Your TDA1543 chip?
regards
daniel

 

[Mad_K]

rectifier->2200uF->1mH->2200uF->LM317/337 with 47uF on adj->330uF->TL431

 

[sparkle]

OOOPS😱
I have the voltage for Your TDA1543 on mind. What power supply voltage for TDA do You use? With that (and with Vref resistor You have mentioned) I would know the working point of the TDA ..... Thanks; daniel😀 😉


p.s. My power suppply is preety much the same as Yours 😉

 

[Mad_K]

I have +/- 15V after LM317/337 and shunted down via TL431 to +5V on the 1543. There is about +2V on the output of the dac/opa.

edit:

rectifier->2200uF->1mH->2200uF->LM317/337 with 47uF on adj->330uF:
+/- 15V:
->330uF+150nF per opa
+15V:
->100ohm/2W->TL431:
+5V
->330uF+150nF+10nF SMD to 1543

 

[sparkle]

Thanks!
I appreciate it very much!
daniel