Please take a look at the remote control crystal oscillator ?

If you have a simple question and just want an answer.
Post Reply
User avatar
mon2
XCore Legend
Posts: 1913
Joined: Thu Jun 10, 2010 11:43 am
Contact:

Re: Please take a look at the remote control crystal oscillator ?

Post by mon2 »

Hi. This is a SMD oscillator or crystal. Here are some ideas to determine which...

review the following pinout of this part:
oscillator.png
oscillator.png (412.36 KiB) Viewed 39488 times
oscillator.png
oscillator.png (412.36 KiB) Viewed 39488 times
Power down this product. Be sure there is no power to the PCB (wait 5 minutes to discharge all capacitors on the PCB if required).

Check with a meter if there is a contact between pins 2 & 4 - if yes, then this is a CRYSTAL @ 13.00 Mhz frequency.

If this is a crystal, here is the internal view:
smd_crystal.png
(81.01 KiB) Not downloaded yet
smd_crystal.png
(81.01 KiB) Not downloaded yet

If there is no contact between pins 2 & 4, then confirm that pin 2 = Ground and that pin 4 = +voltage. Check with the meter, carefully with RED lead of your meter on pin 4 and BLACK lead of your meter to ground. What voltage do you read? Guessing +3v3 but could be other values. This confirms this part is an active oscillator with internal crystal (may be a MEMS oscillator = solid state version) + logic to drive the clock output.

If this part is an oscillator then often:

pin #1 = OE = output enable. Typically, if logic high, then a clock is enabled on pin # 3.
pin #2 = ground
pin #3 = clock_output
pin #4 = power (+voltage and may be +3v3 or +1v8, etc.)

Next, measure the size of the body of this device which may be 3225 or similar = 3.2mm x 2.5mm smd (surface mount device). This part is often < $2 for most variations in low volume and even lower in volume of a few thousands of pieces. We are starting to use more and more MEMS oscillators at our company and the surface looks very similar to this component.

There are many such suppliers around the world but you can check around for the graphic logo (lower left corner) on the component. The specs of part may define the quality of your audio or whatever this device is.

Good luck!


Post Reply