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Greetings.
I need work with the ADC module, sensing a senoidal wave, but i don't
know what is the max in voltage amplitude of the input for ADC.
The ADC can work with negative and positive value in the input?
Thanks Cordialmente, Oscar Javier Tadeo Jaramillo Galeano Nit: 98665185-4 Telefono: 300-779-60-62  Busc un auto?Encontralo en Yahoo! Autos M de 4000 clasificados todos los ds! Usados - 0 km - Vendel tuyo |
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Electrical specifications for ADC
Started by ●January 26, 2004
Reply by ●January 26, 20042004-01-26
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I have never found the electrical
specifications of 5680x family. However, from what I've read, I assume that
it also works with the core voltage: 0V ~ 3.3V. There is an application note
that might help: DSP56800 ADC (AN1947/D).
If needed to measure a sine wave, I would
use either two methods:
1) reduce amplitude and add offset. Play around
with the VREF pin or do some sort of software calibration.
2) reduce amplitude and rectify (using a
precision rectifier with opamps)
Check Motorola's application notes of
Motor Control. They'll often have to take a sinusoidal current feedback,
add offset and isolate from DSP. Take a look at page 29, application note
MEMCOBUM/D.
Hope this helps, and buena suerte
Mariano
----- Original Message -----
From: Oscar Javier Tadeo Jaramillo
G
To: m...@yahoogroups.com
Sent: Sunday, January 25, 2004 8:53 PM
Subject: [motoroladsp] Electrical specifications for ADC Greetings.
I need work with the ADC module, sensing a senoidal wave, but i don't
know what is the max in voltage amplitude of the input for ADC.
The ADC can work with negative and positive value in the input?
Thanks Cordialmente, Oscar Javier Tadeo Jaramillo Galeano Nit: 98665185-4 Telefono: 300-779-60-62
Busc un auto?Encontralo en Yahoo! Autos M de 4000 clasificados todos los ds! Usados - 0 km - Vendel tuyo _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: m...@yahoogroups.com To Post: m...@yahoogroups.com To Leave: m...@yahoogroups.com Archives: http://www.yahoogroups.com/group/motoroladsp More Groups: http://www.dsprelated.com/groups.php3 Yahoo! Groups Links To |
