iPad Pro 11 - Save RAW pixel (DNG) photo using Front Camera

Hello Everyone,
We are using standard AVCapture APIs to take Photo from iPad

Code Block 
guard let availableRawFormat = self.manualSettingsView.photoOutput?.availableRawPhotoPixelFormatTypes.first
else { return nil}

Here we are getting empty type.
Since available raw format type is empty, photo settings is nil,.
Therefore, we are unable to capture photo for front camera in RAW format.

Is there any way to take photo from front camera and save image as RAW data.

Note: We can save HEIC,PNG etc, but we want to save as DNG (RAW)