Ghost Tweaker
Member level 5
Hi all,
I was wondering if someone could explain me why it is often mentioned that impedance matching is not required onchip. What I currently uderstand is that:
- impedance matching does lead to maximum power transfer but not to maximum voltage transfer.
- for max. voltage transfer, zero output impedance and infinite input impedance is preferred
- onchip, at reasonable frequencies, the distances between the circuits are small with respect to the wavelength and therefore there are no relection problems. High input imedances and low output impedances are therefore preferred for best voltage transfer.
Please let me know if I missed something or if one point is wrong
Regards
Ghost Tweaker
I was wondering if someone could explain me why it is often mentioned that impedance matching is not required onchip. What I currently uderstand is that:
- impedance matching does lead to maximum power transfer but not to maximum voltage transfer.
- for max. voltage transfer, zero output impedance and infinite input impedance is preferred
- onchip, at reasonable frequencies, the distances between the circuits are small with respect to the wavelength and therefore there are no relection problems. High input imedances and low output impedances are therefore preferred for best voltage transfer.
Please let me know if I missed something or if one point is wrong
Regards
Ghost Tweaker