I tried to build an AM receiver with the TDA1572 integrated circuit. The specimens found on the Asian market are marked with the Philips logo. When I feed according to the application scheme, the consumption at pin 1 is very high, the voltage at pin 1 dropping to 1V (inductance feeding at 9V). I bought from several sources, the result being the same. Then I used the TDA1072, an equivalent integrated circuit that complies with the specifications in the catalog sheet and the assembly is functional.
Question:
Does anyone have an application schematic for this possible new version of the TDA1572 circuit?
Any information or suggestion will be appreciated.
Thank you!
