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PDF BU2394KN Data sheet ( Hoja de datos )
| Número de pieza | BU2394KN | |
| Descripción | 3ch Clock Generator | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
3ch Clock Generator for Digital Cameras
BU2394KN
General Description
This clock generator IC produces three types of clocks
for CCD, USB, and VIDEO. These clocks are
necessary for digital still camera systems and digital
video camera systems. These are contained in a single
chip with the use of the PLL technology. Generating
these clocks with a single chip allows for simplified
design of the clock system. It occupies less space and
reduced number of components used for mobile
camera equipment which is increasingly being
downsized and less costly.
Features
Connecting a crystal oscillator generates multiple
clock signals with a built-in PLL.
The CCD clock provides switching selection
outputs.
Providing the output of low period-jitter clock.
Uses compact package VQFN20 which makes it
suitable for mobile devices.
Single power supply of 3.3V
Applications
Generation of clocks used in digital still camera and
digital video camera systems
Key Specifications
Supply Voltage Range
Operating Temperature
Range
Reference Input Clock
Output CCD Clock
Output USB Clock
Output VIDEO Clock
BU2394KN
3.0V to 3.6V
-5°C to +70°C
14.318182MHz
28.636363MHz
135.000000MHz
110.000000MHz
108.000000MHz
98.181818MHz
48.008022MHz
14.318182MHz
17.734450MHz
Package
VQFN20
W(Typ) x D(Typ) x H(Max)
4.20mm x 4.20mm x 0.95mm
Typical Application Circuit
0..11uµFF
for Video
14.318182MHz
17.734450MHz
for USB
48.008022MHz
0.1µF0.1uF
R
1：AVDD
2：AVDD
3：AVSS
4：XIN
5：XOUT
BU2394KN
VQFN-20
15：VDD1
14：VDD1
13：VSS1
12：CLK2ON
11：CLK1OUT
00..11µuF
for CCD
135.000000MHz
110.000000MHz
108.000000MHz
98.181818MHz
(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
TSZ02201-0E3E0J500700-1-2
04.Nov.2015 Rev.001
1 page  
BU2394KN
Typical Performance Curves
(Basic Data)
1.0nsec/div
Figure 1. 135MHz Output Wave
(At VDD=3.3V and CL=15pF)
RBW=1KHz
VBW=100Hz
500psec/div
Figure 2. 135MHz Period-Jitter
(At VDD=3.3V and CL=15pF)
10KHz/div
Figure 3. 135MHz Spectrum
(At VDD=3.3V and CL=15pF)
2.0nsec/div
Figure 4. 110MHz Output Wave
(At VDD=3.3V and CL=15pF)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/21
TSZ02201-0E3E0J500700-1-2
04.Nov.2015 Rev.001
5 Page 
BU2394KN
Typical Performance Curves – continued
(Temperature and Supply voltage variations data)
55
54
53
52
51
50
49
48
47
46
45
-25
VDD=2.9V
VDD=3.3V
VDD=3.7V
0 25 50 75
TeTmempeperarattuurree：: TTa[℃[°C] ]
100
Figure 22. Duty vs Temperature
(135MHz)
100
90
80
70
60 VDD=2.9V
50 VDD=3.3V
40 VDD=3.7V
30
20
10
0
-25 0 25 50 75 100
TeTmemppeerrattuurree:：TTa[[℃°C]
Figure 23. Period-Jitter 1σ vs Temperature
(135MHz)
600
500
400
300
200
VDD=2.9V
VDD=3.3V
VDD=3.7V
100
0
-25
0
25 50 75 100
TeTmemppeerraatuurree:：TTa[[℃°C]
Figure 24. Period-Jitter MIN-MAX vs Temperature
(135MHz)
55
54
53
52
51
50
49
48
47
46
45
-25
VDD=2.9V
VDD=3.3V
VDD=3.7V
0 25 50 75
TTeemmpepraetruaretu:rTea：[T°C[℃] ]
100
Figure 25. Duty vs Temperature
(110MHz)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/21
TSZ02201-0E3E0J500700-1-2
04.Nov.2015 Rev.001
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet BU2394KN.PDF ] | |
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