AK8815 Datasheet, PDF (8/37 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHI KASEI
[AK8815/16]
(6) Crystal Oscillator Circuit Part
Crystal resonator and externally connecting load capacitance
Parameter
Symbol
Min
Typ
Oscillating frequency
f0
24.5454
29.5000
frequency accuracy
∆f/f
load capacitance
CL
15
effective equivalent resistance
Re
parallel capacitance
C0
externally connecting load
capacitance on XTLI pin
CXI
18
externally connecting load
capacitance on XTLO pin
CXO
22
Note 1 ) effective equivalent resistance is generally given as
Re = R1 x ( 1 + CO / CL ) square
Where R1 : equivalent series resistance of crystal resonator
CO : parallel capacitance of crystal resonator
Circuit connection example
Max
+/-50
100
0.85
Units
[MHz]
[ppm]
[pF]
[Ω]
[pF]
[pF]
[pF]
Conditions
Note1)
gm
Rf
AK8815
XTLI
XTLO
Rd
CXI
=18pF
CXO
=22pF
rd: Please refer the X’tal specification
MS0331-E-00
8
2004 / 08