Hello,
This might be a somewhat abstract question, but, do you think it would be worthwhile to use a regulated supply for a simple buffer- hp filter? (Using an OPA2134 or LM4562)
This might be a somewhat abstract question, but, do you think it would be worthwhile to use a regulated supply for a simple buffer- hp filter? (Using an OPA2134 or LM4562)
The power supply rejection of an audio circuit should be >100dB.
It is nessecary to use an regulated power supply.
It is nessecary to use an regulated power supply.
"An amplifier receives a wave of electrons at it's input and produces a facsimile of that wave at it's output by modulating it's power supply according to it's transfer characteristic" (© Gordy, 2007)
So, yes, use a regulated supply.
Ideally use a supply with a low and constant output impedance over the audio band.
Read-up on pcb routing.
Use by-passing capacitors close to the chip power pins.
Remember that ground is also signal return (in conventional terms).
Remember that ground is also electron distribution (in unconventional terms).
So, yes, use a regulated supply.
Ideally use a supply with a low and constant output impedance over the audio band.
Read-up on pcb routing.
Use by-passing capacitors close to the chip power pins.
Remember that ground is also signal return (in conventional terms).
Remember that ground is also electron distribution (in unconventional terms).
To be honest it depends on the application and quality desired. A simple zener shunt reg might well be fine. In fact I've run simple op-amp circuits unregulated before without any real problems. 470uF per op-amp seemed fine.
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