Design of low pwer RF Receiver for 433Mhz

Hi,

I am trying to design a low pwer RF receiver for 433mHz using the Rf receiver IC PT4317-X from princeton technologies. I am using the values for the components as mentioned in the datasheet. I have stirctly followed guidlines as in the datasheet. But the receiver is not working properly. The datasheet is available at the following link.

http://ec2-50-112-110-233.us-west-2.compute.amazonaws.com/PT4317-X-datasheet.html. 

One with the 16 pages. If anyone can help. I am new to this RF design thing.