Other Parts Discussed in Thread: LM4902, , TLV320AIC14K
We are using TLV320AIC14KIDBTR, LM4902MM/NOPB and OPA1632DR in our audio processing card.
The input to the TLV320AIC14KIDBTR will be MIC or 1.5 Vrms differential.
The output of the TLV320AIC14KIDBTR will be given as an input to LM4902MM/NOPB or OPA1632DR through analog DPDT switch.
The output of the LM4902MM/NOPB will be interfaced to a Headphone(1.5 Vrms, 150 Ohm).
The output requirement for OPA1632DR is 12 Vrms @ 600 Ohm.
Kindly suggest us that what should be the V+ and V- voltage levels and the current requirements for 12 Vrms output at 600 ohm load ?
Can the output of OPA1632DR be directly connected to 600 ohm 12 Vrms load ?
Is there any impedance matching circuit required in between ?
Requesting you to review the attached schematics and give your feedback.