AK1547 Datasheet, PDF (36/37 Pages) Asahi Kasei Microsystems – 4GHz Low Noise Integer-N Frequency Synthesizer

[AK1547]
17. Marking
a. Style
b. Number of pins
c. A1 pin marking
d. Product number
e. Date code
： QFN
： 20
：●
： 1547
： YWWL (4 digits)
Y ： Lower 1 digit of calendar year
(Year 2012-> 2, 2013-> 3 ...)
WW ： Week
L ： Lot identification, given to each product lot which is made in a week
(A, B, C…)
→ LOT ID is given in alphabetical order
1547(d)
YWWL(e)
●(c)
MS1464-E-00
36
2012/9