MB88156
• AC Characteristics
(Ta = − 40 °C to + 85 °C, VDD = 3.3 V ± 0.3 V, VSS = 0.0 V)
Parameter
Sym-
bol
Pin
Conditions
Value
Unit
Min Typ Max
Oscillation frequency fx
XIN,
XOUT
Fundamental oscillation
3rd overtone
12.5
⎯
40
⎯
40
MHz
48
Multiplied by 1 12.5
⎯
25
Input frequency
fin
XIN
FREQ = 0
Multiplied by 2 12.5
⎯
Multiplied by 4 12.5
⎯
25
MHz
20
FREQ = 1
Multiplied by 1
25
⎯
50
Multiplied by 1 12.5
⎯
25
FREQ = 0
Multiplied by 2 12.5
⎯
25
REFOUT
Multiplied by 4 12.5
⎯
20
Output frequency
fOUT
FREQ = 1
Multiplied by 1
25
⎯
Multiplied by 1 12.5
⎯
50
MHz
25
FREQ = 0
Multiplied by 2
25
⎯
50
CKOUT
Multiplied by 4
50
⎯
80
FREQ = 1
Multiplied by 1
25
⎯
50
Output slew rate
SRC CKOUT
SRR REFOUT
Load capacitance 15 pF
0.4 to 2.4 V
Load capacitance 15pF
0.4 to 2.4 V
0.4
⎯
4.0
V/ns
0.3
⎯
2.0
Output clock Duty
Cycle
tDCC CKOUT
tDCR REFOUT
1.5 V reference level
1.5 V reference level
40
⎯
60
%
tDCI − 10*1 ⎯ tDCI + 10*1
Modulation frequency fMOD CKOUT
Input frequency at 24 MHz
⎯
32.4
⎯
kHz
Lock-Up time*2
tLK CKOUT
⎯
⎯
2
5
ms
Cycle-cycle jitter
Input frequency
12.5 MHz to
⎯
Multiplied by 1
20 MHz
No load capacitance
Standard deviation σ Input frequency
20 MHz to
⎯
tJC CKOUT
Multiplied by 2
50 MHz
Input frequency
No load capacitance 12.5 MHz to
⎯
Standard deviation σ 25 MHz
⎯
150
⎯
100
ps
⎯
200
Multiplied by 4
Input frequency
No load capacitance 12.5 MHz to
⎯
Standard deviation σ 20 MHz
⎯
200
*1 : Because the duty of REFOUT pin output depends on tDCI of the input clock duty, it is assured only when either
A or B condition is used as follow:
A : Resonator input : When the resonator is connected to the XIN pin and XOUT pin and oscillates normally.
B : External clock input : The input level is full swing (VSS − VDD) .
*2 : After power on and release of power down or changing the pin setting (SEL, ENS, FREQ, MLTP1 and MLTP0,
and SPRD) , the stabilization wait time of the modulation clock is required. The stabilization wait time of the
modulation clock takes the maximum value of Lock-Up time.
15