BU2285FV_08 Datasheet, PDF (3/17 Pages) Rohm – DVD-Audio Reference Clock Generator for Audio/Video Appliance

◎BU2363FV（VDD=3.3V, Ta=25℃, Crystal frequency 36.8640MHz, unless otherwise specified.）
Parameter
Symbol
Min.
Typ.
Max.
Unit Conditions
Output L voltage
VOL
－
－
0.4
V IOL=4.0mA
Output H voltage
VOH
2.4
－
－
V IOH=－4.0mA
Consumption current
IDD
－
30
50
mA At no load
CLK54M
CLK54M
－
54.0000
－
MHz XTAL×375 / 64 / 4
CLK27M
CLK27M
－
27.0000
－
MHz XTAL×375 / 64 / 8
CLK33M
CLK33M
－
33.8688
－
MHz XTAL×147 / 40 / 4
CLK16M
CLK16M
－
16.9344
－
MHz XTAL×147 / 40 / 8
CLK768FS1
CLK768_H
CLK768_L
－
－
36.8640
33.8688
－
MHz
At FSEL=OPEN,
XTAL output
－
MHz
At FSEL=L,
XTAL×147 / 40 / 4
CLK384FS2
CLK384_H
CLK384_L
－
－
18.4320
16.9344
－
MHz
At FSEL=OPEN,
XTAL / 2 output
－
MHz
At FSEL=L,
XTAL×147 / 40 / 8
Duty
Duty
45
50
55
%
Measured at a voltage of 1/2VDD
Period-Jitter 1σ
P-J 1σ
－
50
－
psec *1
Period-Jitter
P-J
MIN-MAX
MIN-MAX
－
300
－
psec *2
Rise Time
Tr
－
2.5
－
nsec
Period of transition time required for the clock
output to reach 80% from 20% of VDD
Fall Time
Tf
－
2.5
Output Lock-Time
Tlock
－
－
C/N 54M
C/N 54M
-65
-80
C/N 33M
C/N 33M
-50
-60
－
nsec
Period of transition time required for the clock
output to reach 20% from 80% of VDD
1
msec *3
－
dB *4 (At a maximum load)
－
dB *4 (At a maximum load)
Note) The output frequency is determined by the arithmetic (frequency division) expression of a frequency input to XTALIN.
If the input frequency is set to 36.8640MHz, the output frequency will be as listed above.
Common to BU2285FV and BU2363FV:
*1 Period-Jitter 1σ
This parameter represents standard deviation (1 ) on cycle distribution data at the time when the output clock cycles are
sampled 1000 times consecutively with the TDS7104 Digital Phosphor Oscilloscope of Tektronix Japan, Ltd.
*2 Period-Jitter MIN-MAX
This parameter represents a maximum distribution width on cycle distribution data at the time when the output clock cycles
are sampled 1000 times consecutively with the TDS7104 Digital Phosphor Oscilloscope of Tektronix Japan, Ltd.
*3 Output Lock-Time
The Lock-Time represents elapsed time after power supply turns ON to reach a 3.0V voltage, after the system is switched
from Power-Down state to normal operation state, or after the output frequency is switched, until it is stabilized at a specified
frequency, respectively.
BU2363FV
*4 Make measurements with settings of SPAN to 100kHz, RBW to 1kHz, and VBW to 100Hz taking the middle point between
(54.0000MHz20kHz) and (33.8688MHz20kHz) as a measurement point.
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