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PDF BU2280FV Data sheet ( Hoja de datos )
| Número de pieza | BU2280FV | |
| Descripción | Clock Generator | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Clock Generator
for Audio/Video Equipment
BU2280FV
General Description
BU2280FV is a clock generator IC capable of
generating three types of clocks - VIDEO, AUDIO and
SYSTEM clocks that are necessary for DVD player
systems. It is a single chip solution that uses PLL
technology. Particularly, the AUDIO clock is a
DVD-Video reference and yet achieves high C/N
characteristics that have low level of distortion factor.
Features
■ Connecting a crystal oscillator generates multiple
clock signals from a built-in PLL circuit.
■ AUDIO clock of high C/N characteristics that have
low level of distortion factor
■ The AUDIO clock provides switching selection
outputs.
■ Single power supply of 3.3 V
Applications
DVD players
Key Specifications
Part Name
Power Source Voltage Range [V]
Reference Frequency [MHz]
DVD VIDEO
1
Output
Frequency
[MHz]
DVD AUDIO,
CD
(Switching
outputs)
768fs
512fs
384fs
SYSTEM
Jitter 1σ [psec]
768
(44.1k type)
Long-Term-Jitter p-p [nsec]
Operating Temperature Range [°C]
BU2280FV
3.0 to 3.6
27.0000
27.0000
36.8640
33.8688
24.5760
22.5792
18.4320
16.9344
33.8688
70
8.0
-5 to +70
Package
W(Typ) x D(Typ) x H(Max)
Typical Application Circuit
SSOP-B24
7.80mm x 7.60mm x 1.35mm
0.1µF
27.0000MHz
27.0000MHz
0.1µF
33.8688MHz
1:VDD1
2:VSS1
3:CLK27M1
4:CLK27M2
5:AVDD
6:AVDD
7:AVSS
8:XTALIN
9:XTALOUT
10:VSS2
0.1µF
11:VDD2
12:CLK33M
24:CLK27M3
23:CTRLFS
22:CLK768FS
21:OE
20:CLK384FS
19:DVDD
18:DVSS
17:DVSS
16:CLK512FS1
15:CLK512FS2
14:VDD2
13:VSS2
27.0000MHz
OPEN:48.0kHz type
L:44.1kHz type
36.8640MHz
L:o4r43.13k.8H6z88MHz
OPEN: Enable
L: Disable
18.4320MHz
or 16.9344MHz
0.1µF
24.5760MHz
or 22.5792MHz
24.5760MHz
or 22.5792MHz
0.1µF
(Note) We believe that this circuit is to be recommended. However, to use it, make further thorough check for the characteristics.
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/21
TSZ02201-0E3E0J500660-1-2
04.Nov.2015 Rev.001
1 page  
BU2280FV
Typical Performance Curves
(Basic Data)
5.0nsec/div
Figure 1. 33.9MHz Output Waveform
VDD=3.3V, at CL=15pF
RBW=1kHz
VBW=100Hz
500psec/div
Figure 2. 33.9MHz Period-Jitter
VDD=3.3V, at CL=15pF
10kHz/div
Figure 3. 33.9MHz Spectrum
VDD=3.3V, at CL=15pF
5.0nsec/div
Figure 4. 36.9MHz Output Waveform
VDD=3.3V, at CL=15pF
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/21
TSZ02201-0E3E0J500660-1-2
04.Nov.2015 Rev.001
5 Page 
BU2280FV
Typical Performance Curves – continued
(Temperature and Supply voltage variations data)
55
54
53
52
51
50
49
48
47
46
45
-25
VDD=3.7V VDD=3.3V
VDD=2.9V
0 25 50 75 100
TTeemmppeerraattuurere: ：TTa [[℃°C]]
Figure 24. Duty vs Temperature
(33.9MHz)
100
90
80
70
60
50
40
30
20
10
0
-25
VDD=3.3V
0 25
VDD=2.9V
VDD=3.7V
50 75 100
TTeemmppeeraratutruer:eT：aT[°[C℃] ]
Figure 25. Period-Jitter 1σ vs Temperature
(33.9MHz)
600
500
400
VDD=3.3V
VDD=2.9V
300
200
VDD=3.7V
100
0
-25
0 25 50 75
TTeemmppeerartaurteu:reTa：T[°[C℃] ]
100
Figure 26. Period-Jitter MIN-MAX vs Temperature
(33.9MHz)
55
54
53
52
51
50
49
48
47
46
45
-25
VDD=2.9V
VDD=3.7V
0 25
VDD=3.3V
50 75
TTeemppeeraratutruere: T：aT[[°℃C]]
100
Figure 27. Duty vs Temperature
(36.9MHz)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/21
TSZ02201-0E3E0J500660-1-2
04.Nov.2015 Rev.001
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet BU2280FV.PDF ] | |
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