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BU2285FV
Technical data
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ROHM BU2285FV Technical data

A
High-performance Clock Generator Series
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
2 54.0000 54.0000
DVD VIDEO
Output frequency[MHz]
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 Power dissipation PD 630
*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 Operating temperature Topr -5 ~ +70 -10 ~ +70 ℃ Maximum output load CL 15 15 pF
DVD / CD AUDIO (Switching outputs)
SYSTEM
1 27.0000 27.0000
1/2 13.5000 －
768fs 36.8640 / 33.8688 36.8640 / 33.8688 512fs － － 384fs 18.4320 / 16.9344 18.4320 / 16.9344 256fs － － 768fs 33.8688 33.8688 384fs 16.9344 16.9344
-30 ~ +125 -30 ~ +125 ℃
*1
0.0 ~ 0.2VDD 0.0 ~ 0.2VDD V
450
*2
No.09005EAT03
mW
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© 2009 ROHM Co., Ltd. All rights reserved.
1/16
2009.04 - Rev.
A
BU2285FV,BU2363FV
●Electrical characteristics ◎BU2285FV(VDD=3.3V, Ta=25℃, Crystal frequency 36.8640MHz, unless otherwise specified.)
Parameter Symbol
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_H － 27.0000 － MHz
CLKDAC
CLKDAC_L － 13.5000 － MHz
CLK33M CLK33M － 33.8688 － MHz XTAL×147 / 40 / 4
CLK16M CLK16M － 16.9344 － MHz XTAL×147 / 40 / 8
CLKA_H － 36.8640 － MHz
CLKA
CLKA_L － 33.8688 － MHz
CLKB_H － 18.4320 － MHz
CLKB
CLKB_L － 16.9344 － MHz
Duty Duty 45 50 55 % Measured at a voltage of 1/2VDD
Min. Typ. Max.
Limits
Unit Conditions
At CTRLB=OPEN, XTAL×375 / 128 / 4
At CTRLB=L, XTAL×375 / 128 / 8
At CTRLA=OPEN, XTAL output
At CTRLA=L, XTAL×147 / 40 / 4
At CTRLA=OPEN, XTAL / 2 output
At CTRLA=L, XTAL×147 / 40 / 8
Technical Note
Period-Jitter 1σ P-J 1σ － 50 － psec *1
Period-Jitter MIN-MAX
Rise Time Tr － 2.5 － nsec
Fall Time Tf － 2.5 － nsec
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.
P-J
MIN-MAX
－ 300 － psec *2
Period of transition time required for the clock output to reach 80% from 20% of VDD
Period of transition time required for the clock output to reach 20% from 80% of VDD
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© 2009 ROHM Co., Ltd. All rights reserved.
2/16
2009.04 - Rev.
A
BU2285FV,BU2363FV
◎BU2363FV(VDD=3.3V, Ta=25℃, Crystal frequency 36.8640MHz, unless otherwise specified.)
Parameter Symbol
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
CLK768_H － 36.8640 － MHz
CLK768FS1
CLK768_L － 33.8688 － MHz
CLK384_H － 18.4320 － MHz
CLK384FS2
CLK384_L － 16.9344 － MHz
Duty Duty 45 50 55 % Measured at a voltage of 1/2VDD
Min. Typ. Max.
Limits
Unit Conditions
At FSEL=OPEN, XTAL output
At FSEL=L, XTAL×147 / 40 / 4
At FSEL=OPEN, XTAL / 2 output
At FSEL=L, XTAL×147 / 40 / 8
Technical Note
Period-Jitter 1σ P-J 1σ － 50 － psec *1
Period-Jitter MIN-MAX
Rise Time Tr － 2.5 － nsec
Fall Time Tf － 2.5 － nsec
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.
P-J
MIN-MAX
－ 300 － psec *2
Period of transition time required for the clock output to reach 80% from 20% of VDD
Period of transition time required for the clock output to reach 20% from 80% of VDD
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© 2009 ROHM Co., Ltd. All rights reserved.
3/16
2009.04 - Rev.
A
BU2285FV,BU2363FV
●Reference data (BU2285FV basic data)
Technical Note
RBW=1KHz
VBW=100Hz
1.0V / div
5.0nsec / div
Fig.1 54MHz output waveform
VDD=3.3V, at CL=15pF
1.0V / div
5.0nsec / div
Fig.4 27MHz output waveform
VDD=3.3V, at CL=15pF
1.0V / div
500psec / div
Fig.2 54MHz Period-Jitter
VDD=3.3V, at CL=15pF
1.0V / div
500psec / div
Fig.5 27MHz Period-Jitter
VDD=3.3V, at CL=15pF
10dB / div
10KHz / div
Fig.3 54MHz Spectrum
VDD=3.3V, at CL=15pF
RBW=1KHz
VBW=100Hz
10dB / div
10KHz / div
Fig.6 27MHz Spectrum VDD=3.3V at CL=15pF
RBW=1KHz
VBW=100Hz
1.0V / div
10.0nsec / div
Fig.7 13.5MHz output waveform
VDD=3.3V, at CL=15pF
1.0V / div
5.0nsec / div
Fig.10 33.9MHz output waveform
VDD=3.3V, at CL=15pF
1.0V / div
500psec / div
Fig.8 13.5MHz Period-Jitter
VDD=3.3V, at CL=15pF
1.0V / div
500psec / div
Fig.11 33.9MHz Period-Jitter
VDD=3.3V, at CL=15pF
10dB / div
10KHz / div
Fig.9 13.5MHz Spectrum
VDD=3.3V, at CL=15pF
RBW=1KHz
VBW=100Hz
10dB / div
10KHz / div
Fig.12 33.9MHz Spectrum
VDD=3.3V, at CL=15pF
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© 2009 ROHM Co., Ltd. All rights reserved.
4/16
2009.04 - Rev.
A
BU2285FV,BU2363FV
●Reference data (BU2285FV basic data)
Technical Note
RBW=1KHz
VBW=100Hz
1.0V / div
10.0nsec / div
Fig.13 16.9MHz output waveform
VDD=3.3V, at CL=15pF
1.0V / div
5.0nsec / div
Fig.16 36.9MHz output waveform
VDD=3.3V, at CL=15pF
1.0V / div
500psec / div
Fig.14 16.9MHz Period-Jitter
VDD=3.3V, at CL=15pF
1.0V / div
500psec / div
Fig.17 36.9MHz Period-Jitter
VDD=3.3V, at CL=15pF
10dB / div
10KHz / div
Fig.15 16.9MHz Spectrum
VDD=3.3V, at CL=15pF
RBW=1KHz
VBW=100Hz
10dB / div
10KHz / div
Fig.18 36.9MHz Spectrum
VDD=3.3V, at CL=15pF
RBW=1KHz
VBW=100Hz
1.0V / div
10.0nsec / div
Fig.19 18.4MHz output waveform
VDD=3.3V, at CL=15pF
1.0V / div
500psec / div
Fig.20 18.4MHz Period-Jitter
VDD=3.3V, at CL=15pF
10dB / div
10KHz / div
Fig.21 18.4MHz Spectrum
VDD=3.3V, at CL=15pF
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© 2009 ROHM Co., Ltd. All rights reserved.
5/16
2009.04 - Rev.
A
BU2285FV,BU2363FV
●Reference data (BU2285FV Temperature and Supply voltage variations data)
55
54
53
52
]
％
51
50
Duty[
：
49
Duty
48
47
46
45
-25 0 25 50 75 100
55
54
53
52
]
％
51
50
Duty[
：
49
Duty
48
47
46
45
-25 0 25 50 75 100
Temperature：T[℃]
Fig.22 54MHz
Temperature－Duty
Temperature：T[℃]
Fig.25 27MHz
Temperature－Duty
55
54
53
]
52
％
51
50
Duty[
：
49
Duty
48
47
46
45
-25 0 25 50 75 100
Temperature：T[℃]
VDD=3.3V VDD=3.7V VDD=2.9V
Fig.28 13.5MHz
Temperature－Duty
VDD=3.7V VDD=3.3V VDD=2.9V
VDD=3.7V VDD=3.3V VDD=2.9V
100
90
80
70
60
PJ-1σ [psec]
：
50
40
30
20
Period-jitter1σ
10
0
-25 0 25 50 75 100
Temperature：T[℃]
VDD=3.7V VDD=3.3V
Fig.23 54MHz
Temperature－Period-Jitter 1σ
100
90
80
70
60
PJ-1σ [psec]
：
50
40
30
20
Period-jitter1σ
10
0
-25 0 25 50 75 100
Temperature：T[℃]
VDD=3.7V VDD=3.3V VDD=2.9V
Fig.26 27MHz
Temperature－Period-Jitter 1σ
100
90
80
70
60
PJ-1σ[psec]
：
50
40
30
20
Period-jitt er1σ
10
0
-25 0 25 50 75 100
Temperature：T[℃]
VDD=3.7V VDD=3.3V VDD=2.9V
Fig.29 13.5MHz
Temperature－Period-Jitter 1σ
Technical Note
600
：
500
400
300
200
PJ-MIN-MAX[psec]
100
Period-jitterMIN-MAX
0
-25 0 25 50 75 100
Temperature：T[℃]
Fig.24 54MHz
Temperature－Period-Jitter MIN-MAX
600
500
：
400
300
200
PJ-M IN -MAX[ psec]
Period-jitt erMI N-MAX
100
0
-25 0 25 50 75 100
Temperature：T[℃]
Fig.27 27MHz
Temperature－Period-Jitter MIN-MAX
600
500
：
400
300
200
PJ-M IN -MAX[ ps ec]
Period-jitterMI N-M AX
100
0
-25 0 25 50 75 100
Temperature：T[℃]
Fig.30 13.5MHz
Temperature－Period-Jitter MIN-MAX
VDD=2.9V VDD=3.3V
VDD=3.7V VDD=2.9V
VDD=2.9V VDD=3.3V
VDD=3.7V
VDD=3.7V VDD=3.3V VDD=2.9V
55
54
53
52
％]
51
50
Duty[
：
49
48
Duty
47
46
45
-25 0 25 50 75 100
VDD=2.9V VDD=3.3V
VDD=3.7V
Temperature：T[℃]
Fig.31 33.9MHz
Temperature－Duty
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© 2009 ROHM Co., Ltd. All rights reserved.
100
90
80
70
60
PJ-1σ[psec]
：
50
40
30
20
Period-jitt er1σ
10
0
-25 0 25 50 75 100
Temperature：T[℃]
VDD=2.9V VDD=3.7V VDD=3.3V
Fig.32 33.9MHz
Temperature－Period-Jitter 1σ
6/16
600
500
：
400
300
Period-jitterMI N-MAX
200
PJ-M IN -MAX[ps ec]
100
0
-25 0 25 50 75 100
Temperature：T[℃]
VDD=2.9V VDD=3.7V VDD=3.3V
Fig.33 33.9MHz
Temperature－Period-Jitter MIN-MAX
2009.04 - Rev.
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