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sony: Are the CX20075 and CX20091 interchangeable?

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Forum » Radios and other type of sets (Physics) etc. » MODELS DISPLAYED » sony: Are the CX20075 and CX20091 interchangeable?
Jose Mesquita
Jose Mesquita
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13.Sep.20 20:05
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My Sony ICF-S11W unit uses a Sony CX20091 IC. However, the service manual refers the CX20075 in the same position.

I can't find specs nor datasheets for these IC's.

The Chinese site "520101" lists a post dated as 2019-06-17 by someone called "voyager finishing" (voyager整理) with the subject "Radio chip CX20091" (收音机芯片CX20091), where a IC layout and a pinout description are covered.

To me, this CX20091 seems interchangeable with the CX20075, at least where the pinout is concerned. Do some member here have details that can share?

The author states that the CX20091 can be directly replaced by CX20090 or uPC1303G. Unfortunately I could not find datasheets for these IC's.

Here is the IC CX20091 layout and annotaed by me according to the given pinout description: