Interfacing dual and single supply parts?

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CryingDragon

#1
Ok my hybrid chips use a dual supply and ground but my IC (LM1036 bass/treble/balence/volume control IC) Uses only a positive and a ground,How do i power both of them and how do i route the signal? should i connect the ground of the IC to the ground of the power chips and use a regulator on the positive rail to down the voltage to run the IC?
 
#2
CryingDragon said:
Ok my hybrid chips use a dual supply and ground but my IC (LM1036 bass/treble/balence/volume control IC) Uses only a positive and a ground,How do i power both of them and how do i route the signal? should i connect the ground of the IC to the ground of the power chips and use a regulator on the positive rail to down the voltage to run the IC?
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If you're using ICs you should use regulators anyway. ICs benefit from being run at a regulated voltage.

If you have single supply and dual supply chips it might be better to use separate regulators for each, even if you might use the same positive regulator for both types if the voltage is the same.

In the case of the LM1036 you can go up to +16v, so depending on what the other chips use you might power them both from same say +15v regulator.

One thing that is probably already provided on the circuit using your LM1036s are input and output blocking capacitors, which are compulsory on single supply ICs.

Besides that precaution, the signal can be routed exactly the same for both chip types.

The ground is certainly the same for all of them, so decoupling and star ground rules should also be applied here.


Carlos
 
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