Audio DAC MAX9850 oscillator type - Electronic Circuits Projects Diagrams Free

bananasiong · 15th January 2008, 01:48 AM

Hi,
I'm using MAX9850 for DAC the audio signal that is digitized from the PIC. To maximize the DAC sampling frequency, I choose to have higher MCLK for the DAC, 10 MHz. Since the PIC is unable to generate that high frequency, I decided to use an external circuit to drive a crystal as the clock source for the DAC as attached. Just not sure whether this clock circuit is suitable or not, I can see from the oscilloscope that the output is closed to sine wave type. Or should I use CMOS buffer/inverter type crystal oscillator?
Besides, the oscillator is placed very closed to the IC, so maybe the noise that I hear comes from the oscillator. Maybe I should shield it.

http://datasheets.maxim-ic.com/en/ds/MAX9850.pdf

Thanks

bananasiong · 15th January 2008, 04:14 PM

Too bad, I can see the clock signal (20 MHz) at the audio output from the oscilloscope.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Latest
Audio / sound injection for in car computer	KCarPC75	Electronic Projects Design/Ideas/Reviews	1	5th January 2008 07:08 AM
Coupling with an audio output	fvnktion	Electronic Projects Design/Ideas/Reviews	3	5th February 2007 09:37 PM
audio traces on a pcb?	justDIY	Electronic Projects Design/Ideas/Reviews	12	10th April 2006 04:31 PM
Audio Amplifier Designing Project	silverferro	Electronic Projects Design/Ideas/Reviews	3	26th August 2004 10:04 AM
Front pannel audio connector for computer	grrr_arrghh	General Electronics Chat	0	7th March 2004 04:01 PM

15th January 2008, 04:14 PM	(permalink)
bananasiong	Too bad, I can see the clock signal (20 MHz) at the audio output from the oscilloscope. __________________ Superman returns..