I everyone I have a question regarding the vco
Currently I'm looking for a replacement vco for the two used for the wavebubble.
I was looking for a vco that works with an operating voltage of 5V, but I was wondering when it comes to vco if its is better to have a high tuning sensitivity or a low tuning sensitivity?
for example the max 2622 has a tuning sensitivity of 75 to 100 MHz/ v
where as the ros 892-119+ has a tuning sensitivity of 23 to 27 MHz/v
how much does tuning sensitivity factor into the choose?
anyones knowledge of this is greatly appreciated
tuning sensitivity of vco
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Please be positive and constructive with your questions and comments.
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Re: tuning sensitivity of vco
i'mstill building mine, but if you look at the datasheets they give curves for the vco response. eg, for the ros-2500 linked from 'make -> vco' we have something likenova wrote: Currently I'm looking for a replacement vco for the two used for the wavebubble.
I was looking for a vco that works with an operating voltage of 5V, but I was wondering when it comes to vco if its is better to have a high tuning sensitivity or a low tuning sensitivity?
for example the max 2622 has a tuning sensitivity of 75 to 100 MHz/ v
where as the ros 892-119+ has a tuning sensitivity of 23 to 27 MHz/v
how much does tuning sensitivity factor into the choose?
v TUNE - TUNING SENS.- FREQUENCY - POWER OUTPUT
8.00 68.87 2405.31 2380.37 2360.90 7.98 7.24 6.44
if you want to cover the 14 802.11 channels (2412-2484 in something like 5mhz jumps) you have to consider how fine control you have over the tuning voltage in this range. if you could only step in 0.5v increments you'd not be able to tune to any channel in the range particularly well (i think, to effectively jam all 802.11 you'd have to cover the entire range at once to deal w/ the spread spectrum stuff).
[ meta - forgot this part before ]
anyway, to 'pick'. i'd look at the peak to peak output of the previous stage and make sure that this voltage range covers what you're going to want to cover w/ enough 'slop' on the ends for temperature etc.
since i'm just getting started, i noticed you wrote:
the spec-ed ones mumble about being 12v. are you doing this to reduce power or something else?nova wrote: I was looking for a vco that works with an operating voltage of 5V
\p
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- Joined: Mon Dec 15, 2008 2:07 pm
Re: tuning sensitivity of vco
thanks for the reply
I wanted to do away with 12 converter from the wavebubble design so I figured that would use the 5v booster only. also I wanted to do away with a high dc offset as well.
I look at the datasheet and try to understand the graphs
thanks
I wanted to do away with 12 converter from the wavebubble design so I figured that would use the 5v booster only. also I wanted to do away with a high dc offset as well.
I look at the datasheet and try to understand the graphs
thanks
Please be positive and constructive with your questions and comments.