All 3 references in the title are small, 3 pin, AM receivers in a chip with minimal external components.
I remember seeing then in schematics at electronics magazines many years ago, somehow expensive (the Ferranti ZN414) at that time, so, never got one. Until now, the equivalent TA7642:
... previous image is the testing board, run with the following schematics and it worked:
Tested also with variable capacitor to ground:
Anyhow it's a funning litle device, good enough for a very simple AM receiver.
Have a nice week!