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multifrequency sine wave signal

 
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multifrequency sine wave signal
PostPosted: Fri Jan 18, 2008 4:19 am     Reply with quote
hi.. im using AD5932 to generate current at 1mA.this chip have maximum frequency of 25Mhz and PIC16f877a to obtain that current for desired frequencies (5kHz,50kHz,100kHz and 1MHz).

and i really want to know general idea how to compute the input current with a frequency range maximum to 25Mhz obtained from the AD5932 chip to the output current with four different frequencies using the PIC16f877a.

i'm new in programming...please help me..tq
kender



Joined: 09 Aug 2004
Posts: 768
Location: Silicon Valley

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PostPosted: Sat Jan 19, 2008 6:16 pm     Reply with quote
May be, the fig.8 in the datasheet would help. It plots the current consumption vs. supply voltage and main clock rate. Ultimately, why do you need to know the currents? Do you need them for a power budget?
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