Problem with FM VCO alignment in FM Radio TEA5757

Hello:
I have build a FM radio using STR TEA5757, according Philips Application note AN99041.

I have a problem with FM VCO alignment. If you align VCO coil the tunning voltage should change between 0.8V(88MHz) and 1.9V(108MHz), but in my PCB this isn't happen.
If I align my VCO coil the tunning voltage is constant in all the FM band.

Could anybody help me?

Thank you!

I Suggest You can re-design TEA5767
It better than TEA5757

but have philips released that chip TEA5767

Do you still have the Application Note? We need it.

Hi,

Here you are documentation about TEA5757. But I've make a new design with TEA5768 and it's better, less components, no adjust needed, ....

Best regards.

Wow This is great Thank you so much.

This is great Thank you so much.

Thank you.

I finally used the TEA5768HL in my project.

Size approx 35x35mm. If someone is interested in the gerber, pls. mail me.

Regards, Ultravox

Would anybody snd me a circuit diagram which may be used to increase the sound quality of fm receiver?

Added after 1 minutes:

Wow This is great Thank you so much.

Added after 1 minutes:

I want to know the antenna about this!

This looks like a power supply circuit.