cirrus CS3511 – current production Tripath

[enregistree]

While Tripath ICs are still available, Tripath as company went bankrupt years ago so no longer develops new designs. Intellectual property has been sold to Cirrus – and they finally used it and produced new IC, CS3511. It has been here for nearly two years, and specification looks like it is descendant of ta2020 and ta2024 but in 32L QFN (6 X 6 mm) package.

There are some changes like differential input, 4 gain settings and RI, RF resistors are now part of the chip,…

The datasheet might be useful even for ta2020 designs as there is more info than in Tripath datasheets and I think most of it apply for tripath chips as well.

Why we don't hear much about this IC might be caused by availability of "old" tripath ICs in large quantity (or even being still produced). But new cirrus chip looks worth trying & is stocked by mouser and digikey. The latter has also evaluation board.

While ta2020 can be found mostly in budget gear, I see it's potential when driving high efficieny speakers or in smaller room systems. So does same apply for this cyrrus?

[luka]

and why do you think this has anything from tripath? coz of the modulator or what?

[enregistree]

Originally Posted by luka

and why do you think this has anything from tripath? coz of the modulator or what?

Mainly because design features look so similar. Some portions of cirrus datasheet are actualy exact copy of tripath's.

Search for example "The frequency of the switching pattern is spread spectrum in nature and typically varies between 100kHz and 1MHz," and "is that it does not require large multi-pole filters to achieve excellent performance in listening tests." - cirrus p. 16, tripath TA2020 p. 11.

[luka]

oh yes, this part make it the same for sure yes!