I am scratching my head to create a footprint for ADA4817 which comes in LFCSP CP-8-13 package. I reckon this package is only used by Analog Devices.
The main problem is I do not know what should be the pad size for the pins. The pins are stated to be 0.25mm in width and 0.40mm in height with a semi-circle ending:
So these are my concerns:
- What should be the pad size be (copper) for each pin
- What should be the glue size be (for stencil)
- The copper shape should be a rectangle, or I should care for that round ending on the pads?
- My other concern is the distance between pins and the exposed pad. Can I get away by making the exposed pad footprint smaller than the actual exposed pad size? e.g. going with a 1x1mm square instead of 1.4x1.4mm?