English
Language : 

AK8137A Datasheet, PDF (5/11 Pages) Asahi Kasei Microsystems – Low Power Multiclock Generator with XO
AK8137A
AC Characteristics
All specifications at VDD: over 3.0 to 3.6V, Ta: over -20 to +85℃, 25MHz Crystal, unless otherwise noted
Parameter
Symbol
Conditions
Crystal Clock Frequency
Cycle to Cycle Jitter 1
Cycle to Cycle Jitter 2
Cycle to Cycle Jitter 3
Output Clock Duty
Cycle
F_osc
Jit_cycle-cycle1
Jit_cycle-cycle2
Jit_cycle-cycle3
DtyCyc
Pin: XI,XO
Pin: CPU_Cp, CPU_Cn (1)(2)
Pin: USB_Cp, USB_Cn (1)(2)
Pin: SATA_Cp,SATA_Cn (1)(2)
Pin: Diff CLK Pins (2)
Figure.3
Pin: REFOUT (3)
Output Clock Slew Rate
Slew rate matching
Differential output swing
Crossing point voltage
Variation of Vcr
Maximim output voltage
Minimum output voltage
Output Clock Rise Time
Output Clock Fall Time
Output disable Time(4)
Slew_rise_fall
Slew_ver
V_swing
V_cross
V_cross_delta
V_max
V_min
T_rise
T_fall
Diff CLK Pins(2) Figure3
Diff CLK Pins(2) Figure.2
Diff CLK Pins(2) Figure.3
Diff CLK Pins(2) Figure.2
Diff CLK Pins(2) Figure.2
Diff CLK Pins(2) Figure.2
Diff CLK Pins(2) Figure.2
Pin: REFOUT (3 )
Pin: REFOUT (3 )
T_dis
Pin: CLK Pins
Power-up Time1(4)
T_put1
Pin: CLK Pins
Power-up Time2(5)
T_put2
Pin: CLK Pins
(1) 1000 sampling or more
(2) Measured with load condition shown in Figure.1
(3) Measured with load capacitance of 25pF
(4) Refer to Figure.5 on Power down sequence
(5) Refer to Figure.4 on Power On Reset sequence
MIN
-85
-250
-125
45
40
2.5
300
300
-0.3
TYP MAX Unit
25.000
+85
+250
+125
MHz
ps
ps
ps
50
55
%
50
60
%
8.0 V/ns
20
%
mV
550 mV
140 mV
1.15 V
V
2.5
5.0
ns
2.5
5.0
ns
300 ms
150 ms
150 ms
MS1109_E_02
-5-
February-10