Hi all.. I'm looking into yet another angle of my project -- this time spurred on by a comment in another thread about building your own Oven Controlled XTAL Oscillator (OCXO) -- namely pointing to The_RB's cool proof of concept here.
In his design he has purposefully set the circuit up to target ambient room temps and heats his OCXO to about 95F.. However, I'd like to see if his circuit/design can be tweaked to allow use in a much wider temp range -- specifically somewhere around 30F (or lower possibly) to say 115F.. To that end, I'm thinking I could effectively tweak his design to heat the xtal up to something around 130F. If I do that AND package it up into a larger thermal mass, do you see any other issues I might have in achieving my goal?
In my case this would be used in conjunction with a 32.768khz crystal to drive the RTCC module in a PIC32 processor to provide a, hopefully, rock-solid clock that can be used in warm or cold environments.
Also, if this device is mounted about an inch off-board from the rest of the PIC32 circuit is that asking for trouble since it's providing the clock for the RTCC?
TIA!
In his design he has purposefully set the circuit up to target ambient room temps and heats his OCXO to about 95F.. However, I'd like to see if his circuit/design can be tweaked to allow use in a much wider temp range -- specifically somewhere around 30F (or lower possibly) to say 115F.. To that end, I'm thinking I could effectively tweak his design to heat the xtal up to something around 130F. If I do that AND package it up into a larger thermal mass, do you see any other issues I might have in achieving my goal?
In my case this would be used in conjunction with a 32.768khz crystal to drive the RTCC module in a PIC32 processor to provide a, hopefully, rock-solid clock that can be used in warm or cold environments.
Also, if this device is mounted about an inch off-board from the rest of the PIC32 circuit is that asking for trouble since it's providing the clock for the RTCC?
TIA!