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PO circuit design
Hi,
I want to design a POR circuit that works for 1.8/2.5 and 3.3V. Is it possible to design the circuit. Cananybody tell me what circuit to use. If any architecture is there,please share it.
cm xtal frequency
Hi,
If Rf provides only DC biasing, why is the value varied wrt to Crystal frequency. Iam seeing Rf is inversly proportional to operating frequency. And why are they of huge value. I can provide feedback using a small values resistro since the current at the input of inverter...
crysal IO design
Hi,
If Rf provides only DC biasing, why is the value varied wrt to Crystal frequency. Iam seeing Rf is inversly proportional to crystal operating frequency. And why are they of huge value. I can provide feedback using a small values resistro since the current at the input of...
xtal feedback resistor
Hi,
I have a few more queries.
The crystal manufacturer specifies the vales of C1,C2 (Load) and the crystal parameters (R,L,C and C0). This would give a particular phae shift (pi network). Now there would be some more additional capacitances like input capacitances, PCB...
xtal oscillator design
Hi,
1. The pi network in the oscillator (C1-R1-C2) will contribute to 180 phase shift if crystal is considered separately. But when it comes in the feedback loop, do you stilll say that the transistor sizing/Feedback resistor doesnt contribute anyting to the phaseshift...
xtal oscillator
Hi,
I am currently working on XTAL OSC design.
I have certain doubts.
1. The xtal provides 180 phase shift and the inverter provides the remaining 180 phaseshift. What is the contribution of Rf (feedback resistor) in addition to providing DC biasing. Does it provide any...
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