Re: Is there still something like the old 2105?

Joerg wrote:

Hello Mitja,

Be careful with that -- the crusty old analog engineer at the place
where we used '2812s described its ADC as "10 bits going on 8" -- I
suspect the '24x is no better.



I have some experience with 24xx series ADC, and I must say that it
works as specified. The 10bit accuracy can be easily achieved on a dual
layer board, even with switching devices nearby on the same board
(switching 50 Amps at 40kHz). It is completely different ADC than the
one in 28xx series.


With devices like these that are really more geared towards the audio market I am wondering why they included such a high speed 10bit ADC. A slower 14-16bit would be more practical in many applications. But you can't have it all, I guess. 
>
-snip-

The '2401 is like the '2812 in that it's really designed for advanced motor control -- that's why the data sheet says "Several advanced peripherals, optimized for digital motor and motion control applications, have been integrated to provide a true single-chip DSP controller."

For this sort of thing those high-speed ADC's come in mighty handy, and the precision isn't such a big deal.

ADI used to make DSPs with built-in stereo codecs that had 16 bits in and out; I don't know what happened to them, or if TI makes anything similar.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
.

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