Using opamp in I/V doesn't change the basic math, its still just under 1VRMS. What an opamp does do is get around the limitation of the output compliance of the DAC - so you can have any output level you want by changing the 2k7 resistor's value within the restrictions of the opamp's power supply.
matt_garman, That is the question 
I was calculating the same. TDA1543 has about double output current swing (full scale swing, whatever it means in this case - peak-peak???) and half of the resistance, so it might be similar. I remember I had like 500 or 600mV dB FS RMS with passive I/V TDA1543. I'm not sure about opamp I/V too.
I was calculating the same. TDA1543 has about double output current swing (full scale swing, whatever it means in this case - peak-peak???) and half of the resistance, so it might be similar. I remember I had like 500 or 600mV dB FS RMS with passive I/V TDA1543. I'm not sure about opamp I/V too.
Are you sure just under 1V RMS? 0,5V and 1V would be a big difference to me. I have to decide if I am using additional gain stage or just filter
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