AK1541_17 Datasheet, PDF (35/37 Pages) Asahi Kasei Microsystems – 20 to 600Mhz Delta-Sigma Fractional-N Frequency Synthesizer

[AK1541]
17. Marking
(a) Style
(b) Number of pins
(c) 1 pin marking:
(d) Product number
(e) Date code
: QFN
: 24
:○
: 1541
: YWWL (4 digits)
Y:
WW:
L:
Lower 1 digit of calendar year (Year 2011 → 1, 2012 → 2 ...)
Week
Lot identification, given to each product lot which is made in a week
 LOT ID is given in alphabetical order (A, B, C…).
1541_(d)
YWWL _(e)
(c)
Fig. 17 Marking
MS1043-E-05
35
2013/03