J
John Larkin
- Jan 1, 1970
- 0
We'd like to temperature-compensate a 50 MHz LC oscillator. The
inductor is generally the bad guy, typically in the +100 to maybe +150
PPM/K range. So if we use an NPO cap, a piston cap trimmer, and an NTC
cap all in parallel, we could maybe get the TC down around, say, 20
PPM in production. So I asked one of my guys to get us an 0805 or 0603
sample kit, low-PF range, TC's like N750 or something. Duh: there's
apparently no such thing, and Kyocera only makes NTCs to order in 100K
and up batches.
So, does anybody know of a source for NTC surface-mount ceramic caps?
Thanks,
John
inductor is generally the bad guy, typically in the +100 to maybe +150
PPM/K range. So if we use an NPO cap, a piston cap trimmer, and an NTC
cap all in parallel, we could maybe get the TC down around, say, 20
PPM in production. So I asked one of my guys to get us an 0805 or 0603
sample kit, low-PF range, TC's like N750 or something. Duh: there's
apparently no such thing, and Kyocera only makes NTCs to order in 100K
and up batches.
So, does anybody know of a source for NTC surface-mount ceramic caps?
Thanks,
John