With this post I wanted to create a quick reference to all chipamps from TI that are labeled Overture series.
I am assuming all of these should be able to achieve as low of THD figures as LM3886 (0.0033% @1kHz into 4ohm). THD+N probably will be worse since power output is lower.
Since LM3886 is out of stock I figured it would be interesting to use alternatives (even though they are not as powerful).
Overture chip amps list:
#1 LM3886

#2 LM4780 dual channel
[equivalent schematics is missing from the datasheet]
#3 LM2876

#4 LM4766 dual channel

#5 LM1876 dual channel

Any other chips I missed?
I am assuming all of these should be able to achieve as low of THD figures as LM3886 (0.0033% @1kHz into 4ohm). THD+N probably will be worse since power output is lower.
Since LM3886 is out of stock I figured it would be interesting to use alternatives (even though they are not as powerful).
Overture chip amps list:
#1 LM3886
- 68W into 4ohm, Vcc=Vee=28V
- 50W into 8ohm, Vcc=Vee=35V

#2 LM4780 dual channel
- 55W into 4ohm, Vcc=Vee=25V
- 60W into 8ohm, Vcc=Vee=35V
[equivalent schematics is missing from the datasheet]
#3 LM2876
- 40W into 8ohm, Vcc=Vee=30V
- NA into 4ohm

#4 LM4766 dual channel
- 40W into 8ohm, Vcc=Vee=30V
- NA into 4ohm

#5 LM1876 dual channel
- 22W into 4ohm, Vcc=Vee=20V
- 20W into 8ohm, Vcc=Vee=22V

Any other chips I missed?
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LM4780 has been obsoleted by TI. As have the LM3875 and LM3876, which were lower output current versions of the LM3886 (AFAIR).
You missed the LM1875. That one is still in production.
Tom
You missed the LM1875. That one is still in production.
Tom