Hi Niloy,
Sorry for the delayed response.
With your gain less than 1 and a signal of 500 kHz, that makes a GBP of ~ 500 kHz and ADA4627-1 (GBP = 19 MHz) will be appropriate for your application. It is a wide bandwidth precision amplifier that features low noise and very low offset. It's typical offset voltage is only 70 uV (130 uV lower than previous part) and a noise of 0.86 uVp-p. Unlike AD8067, it does not have recommended values for RF so you can play with values you want and get the same performance offered by the device. Just take note that ADA4627-1 is not Rail-to-Rail thus care is required to ensure inputs do not exceed the IVR.
I hope this helps.
Best Regards,
Jino