Please help with identification.

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gekaufman



Joined: 08 Dec 2014
Posts: 385
Location: New Hampshire, USA

PostPosted: Tue May 17, 2016 10:01 am    Post subject: Please help with identification. Reply with quote

A few unknowns from a recent batch of IC's

I have information on the AD7570JD and the Burr-Brown 3329/03.

Any help with the other two IC's?

- Gary[/img]
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mister_rf



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Location: Bucharest, Romania

PostPosted: Tue May 17, 2016 10:43 am    Post subject: Reply with quote

Intersil IM5503C similar to SN74S301 = 256-bit High-Performance Random-Access Memories
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CPUShack



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PostPosted: Tue May 17, 2016 10:56 am    Post subject: Reply with quote

Analog Devices AD7570 10-Bit Monolithic A/D Converter
BB 3329/03 Hybrid IC Power Booster (100mA)

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gekaufman



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PostPosted: Tue May 17, 2016 12:11 pm    Post subject: Reply with quote

Thanks, any ideas on the ?Fairchild? part?
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CPUShack



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PostPosted: Tue May 17, 2016 1:09 pm    Post subject: Reply with quote

Most likely a ROM, as 77S2xx are all Schottky ROMs from that era, so 772xx prob predates that
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magictom



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PostPosted: Tue May 17, 2016 1:15 pm    Post subject: Reply with quote

gekaufman wrote:
Thanks, any ideas on the ?Fairchild? part?


It's what's commonly called known as uA723 = adjustable voltage regulator. For a while, Fairchild added the prefix "7" to indicate linear ICs. Nice chip!
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gekaufman



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PostPosted: Tue May 17, 2016 1:34 pm    Post subject: Reply with quote

Thanks, familiar with the uA723, just didn't recognize the markings or construction.

I'll have to give it a test run, as I have several working power supplies based on the uA723 circuit.

- Gary
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CPUShack



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PostPosted: Tue May 17, 2016 2:03 pm    Post subject: Reply with quote

magictom wrote:
gekaufman wrote:
Thanks, any ideas on the ?Fairchild? part?


It's what's commonly called known as uA723 = adjustable voltage regulator. For a while, Fairchild added the prefix "7" to indicate linear ICs. Nice chip!


Nice cool!
I was WAY off

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