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Help on V22321 and UAF42 components

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sename

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Hello,

1) May I enquire if any of you know of the V22321 component? I am supposed to replace this component but do not know of its function. Does anyone know where I can obtain the data sheet for it?

2) Also, may I enquire if anyone knows of a cheaper alternative to the UAF42 universal filter? essentially I need an IC that functions as an active filter which can be programmed using external resistors.

Really appreciate any advice.
Thks
 
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