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madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: Boom on June 14, 2010, 09:06:17 AM

Title: Sunking IC3....
Post by: Boom on June 14, 2010, 09:06:17 AM
Hi,

does anyone know if IC3 can be subbed for a IC7660S ? I can only get that one and the LTC1044, which I know is compatible.

Thanks
Title: Re: Sunking IC3....
Post by: madbean on June 14, 2010, 02:24:14 PM
The ICL7660SPCA is the default charge pump for the stock unit. Not sure if there is any difference between an "S" and the "SCPA" version. My guess is probably none.
Title: Re: Sunking IC3....
Post by: oldhousescott on June 14, 2010, 03:22:46 PM
The "S" is critical because it specifies the expanded voltage and oscillator frequency range. The "CPA" means 8-pin DIP with 0 to +70°C operating range.
Title: Re: Sunking IC3....
Post by: Boom on June 14, 2010, 06:09:19 PM
Great, thanks guys.

Now that I know that they´ll both be ok, I´m gonna check what the real difference between those is. The LTC1044 is about TRIPLE the price of the IC7660S !
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