use higher quality png for datasheet cover
diff --git a/datasheet.pdf b/datasheet.pdf
index 8339d52..7331f67 100644
--- a/datasheet.pdf
+++ b/datasheet.pdf
Binary files differ
diff --git a/ttlogo.png b/ttlogo.png
index e231dd4..91902db 100644
--- a/ttlogo.png
+++ b/ttlogo.png
Binary files differ