Fun video below from electronupdate that’s a teardown of a RTL-SDR USB stick with some highlights around the RF input and decapsulation of a couple ICs from the device:
Recently there has been much interest in two integrated circuit which were originally designed to receive FM radio and DVB-T TV (as used in Europe).
Some enterprising people quickly realised that since they were based on software-defined techniques they could be quickly re purposed for all sorts of clever things.
I bought one of Amazon and de-capped the two main ASICs inside.
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