Breaking News
Comments
Newest First | Oldest First | Threaded View
robert.rich
User Rank
Rookie
re: TI TLV320DAC3202 headset driver
robert.rich   3/2/2011 10:08:07 PM
NO RATINGS
Exactly. For typical headset applications, you only care about distortion at lower power levels: less than 2mW power to the load. SNR, on the other hand, is important across the dynamic range.

Hughston
User Rank
CEO
re: TI TLV320DAC3202 headset driver
Hughston   2/25/2011 10:42:43 PM
NO RATINGS
I guess for this application you don't need better distortion because the consumer won't be able to hear it. SNR is something they would hear and complain about if they were using the product in a quiet environment. If the SNR was low the user would notice it at lower volume settings.

robert.rich
User Rank
Rookie
re: TI TLV320DAC3202 headset driver
robert.rich   2/25/2011 3:03:33 PM
NO RATINGS
Hello, Hughston. My name is Robert Rich, and I'm in the analog communications group at TI. I've got an answer to your question. The TLV320DAC3202 was designed for portable headset applications like media players, where typical average power levels are 0.1 to 2mW for a 32 ohm headset. Headset loads range between 16 to 150 ohms, and OEMs add a series resistor between the output of the headset amplifier and the load for acoustic safety reasons. The large swing of 1VRMS at the ball of the IC guarantees adequate power to the load even when the series resistor is added.

Hughston
User Rank
CEO
re: TI TLV320DAC3202 headset driver
Hughston   2/7/2011 5:27:20 PM
NO RATINGS
So this chip will put out 1 Vrms but the THD curves are show for 10 to 15 mW and the THD is listed at 68 dB for 20 mW into 16 ohms. I think I would rather see what the THD numbers are for higher drive levels. I wonder how good the part really has to be for a consumer audio product? The SNR looks good enough but maybe not the THD.



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Steve Wozniak Reacts to Latest iPhone
Max Maxfield
3 comments
Funnily enough, just a few days ago as I pen these words, I was chatting with my wife (Gina the Gorgeous) when she informed me that -- as a kid -- she had never played at making a ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
20 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
15 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
46 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)