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BU2363FV-E2

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
BU2363FV
1/16
www.rohm.com
2009.04 - Rev.
A
© 2009 ROHM Co., Ltd. All rights reserved.
High-performance Clock Generator Series
DVD-audio Reference
Clock Generators for A/V Equipments
BU2285FV,BU2363FV
●Description
These clock generators are an IC generating three types of clocks - VIDEO, AUIDIO and SYSTEM clocks – necessary for
DVD player systems, with a single chip through making use of the PLL technology. Particularly, the VIDEO clock is a
DVD-Audio reference and yet achieves high C/N characteristics necessary to provide high definition images.
●Features
1) Connecting a crystal oscillator generates multiple clock signals with a built-in PLL.
2) The AUDIO clock provides switching selection outputs
3) The VIDEO clock achieves high C/N characteristics.
4) Single power supply of 3.3 V
●Applications
DVD players
●Line up matrix
Part name BU2285FV BU2363FV
Supply voltage [V] 3.0 ~ 3.6 3.0 ~ 3.6
Reference frequency [MHz] 36.8640 36.8640
Output frequency[MHz]
DVD VIDEO
2 54.0000 54.0000
1 27.0000 27.0000
1/2 13.5000 －
DVD / CD AUDIO
(Switching outputs)
768fs 36.8640 / 33.8688 36.8640 / 33.8688
512fs － －
384fs 18.4320 / 16.9344 18.4320 / 16.9344
256fs － －
SYSTEM
768fs 33.8688 33.8688
384fs 16.9344 16.9344
Jitter 1σ [psec] 50 50
C/N [dB] (VIDEO) -60 -80
Package SSOP-B24 SSOP-B16
●Absolute Maximum Ratings (Ta=25℃)
Parameter Symbol BU2285FV BU2363FV Unit
Supply voltage VDD -0.5 ~ +7.0 -0.5 ~ +7.0 V
Input voltage VIN -0.5 ~ VDD+0.5 -0.5 ~ VDD+0.5 V
Storage temperature range Tstg
-30 ~ +125 -30 ~ +125 ℃
Power dissipation PD 630
*1
450
*2
mW
*1 In the case of exceeding at Ta = 25℃, 6.3mW should be reduced per 1℃
*2 In the case of exceeding at Ta = 25℃, 4.5mW should be reduced per 1℃
*Operating is not guaranteed.
*The radiation-resistance design is not carried out.
*Power dissipation is measured when the IC is mounted to the printed circuit board.
●Recommended Operating Range
Parameter Symbol BU2285FV BU2363FV Unit
Supply voltage VDD 3.0 ~ 3.6 3.0 ~ 3.6 V
Input H voltage VIH 0.8VDD ~ VDD 0.8VDD ~ VDD V
Input L voltage VIL
0.0 ~ 0.2VDD 0.0 ~ 0.2VDD V
Operating temperature Topr -5 ~ +70 -10 ~ +70 ℃
Maximum output load CL 15 15 pF
No.09005EAT03
BU2285FV,BU2363FV
Technical Note
2/16
www.rohm.com
2009.04 - Rev.
A
© 2009 ROHM Co., Ltd. All rights reserved.
●Electrical characteristics
◎BU2285FV(VDD=3.3V, Ta=25℃, Crystal frequency 36.8640MHz, unless otherwise specified.)
Parameter Symbol
Limits
Unit Conditions
Min. Typ. Max.
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 / 128 / 2
CLK27M CLK27M － 27.0000 － MHz XTAL×375 / 128 / 4
CLKDAC
CLKDAC_H － 27.0000 － MHz
At CTRLB=OPEN,
XTAL×375 / 128 / 4
CLKDAC_L － 13.5000 － MHz
At CTRLB=L,
XTAL×375 / 128 / 8
CLK33M CLK33M － 33.8688 － MHz XTAL×147 / 40 / 4
CLK16M CLK16M － 16.9344 － MHz XTAL×147 / 40 / 8
CLKA
CLKA_H － 36.8640 － MHz
At CTRLA=OPEN,
XTAL output
CLKA_L － 33.8688 － MHz
At CTRLA=L,
XTAL×147 / 40 / 4
CLKB
CLKB_H － 18.4320 － MHz
At CTRLA=OPEN,
XTAL / 2 output
CLKB_L － 16.9344 － MHz
At CTRLA=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 MIN-MAX
P-J
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 － nsec
Period of transition time required for the clock
output to reach 20% from 80% of VDD
Output Lock-Time Tlock － － 1 msec *3
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.
BU2285FV,BU2363FV
Technical Note
3/16
www.rohm.com
2009.04 - Rev.
A
© 2009 ROHM Co., Ltd. All rights reserved.
◎BU2363FV(VDD=3.3V, Ta=25℃, Crystal frequency 36.8640MHz, unless otherwise specified.)
Parameter Symbol
Limits
Unit Conditions
Min. Typ. Max.
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 － 36.8640 － MHz
At FSEL=OPEN,
XTAL output
CLK768_L － 33.8688 － MHz
At FSEL=L,
XTAL×147 / 40 / 4
CLK384FS2
CLK384_H － 18.4320 － MHz
At FSEL=OPEN,
XTAL / 2 output
CLK384_L － 16.9344 － 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 MIN-MAX
P-J
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 － nsec
Period of transition time required for the clock
output to reach 20% from 80% of VDD
Output Lock-Time Tlock － － 1 msec *3
C/N 54M C/N 54M -65 -80 － dB *4 (At a maximum load)
C/N 33M C/N 33M -50 -60 － 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 σ) 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 (54.0000MHz20kHz) and (33.8688MHz20kHz) as a measurement point.
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BU2363FV-E2

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Clock Generators & Support Products AV EQUIP DVDVID REF CLOCK GEN
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