AK1572 Datasheet, PDF (34/35 Pages) Asahi Kasei Microsystems – Down Converter Mixer with Fractional-N Frequency Synthesizer and VCO

[AK1572]
20. Marking
(a) Style
:
(b) Number of pins :
(c) 1 pin marking: :
(d) Product number :
(e) Date code
:
QFN
32
○
1572
YWWL (4 digits)
Y: Lower 1 digit of calendar year (Year 2013 → 3, 2014 → 4 ...)
WW: Week
L: Lot identification, given to each product lot which is made in a week
 LOT ID is given in alphabetical order (A, B, C…).
1572(d)
YWWL(e)
○(c)
MS1551-E-00
34
2013/8