BU2381FV-E2 [ROHM]
Clock Generator, CMOS, PDSO16;
| 型号： | BU2381FV-E2 |
| 厂家： | 
ROHM |
| 描述： | Clock Generator, CMOS, PDSO16 光电二极管 |
| 文件： | 总6页 (文件大小：54K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
BU2381FV
Multimedia ICs
Clock generator for digital still camera
BU2381FV
BU2381FV is a high-performance 3-channel PLL IC. PLL circuit generates necessary clocks by inputting standard clocks
of crystal oscillator from outside. Changing a connection of wire can generate any clocks required for any applications of
users. Jitter and S/N characteristic has achieved almost the same high-quality sound and vision as oscillating module
because of optimization of PLL. Frequency can be changed by the internal dividing control.
zApplications
zExternal dimensions (Unit : mm)
Digital still camera
5.0±0.2
16
9
zFeatures
1) Generate clocks for video output, CDS, USB from standard
clock input
2) No external elements required for PLL
3) Standard clocks apply to two kinds of NTSC/PAL
4) Single power supply of 3.3V operating
5) SSOP-B16 small package
1
8
0.15±0.1
0.1
0.65
0.22±0.1
SSOP-B16
zAbsolute maximum ratings (Ta=25°C)
Parameter
Applied voltage
Symbol
Limits
−0.5 to +7.0
−0.5 to VDD+0.5
−30 to +125
450
Unit
V
V
DD
IN
Input voltage
V
V
Storage temperature range
Power dissipation
Tstg
Pd
°C
mW
Derating : 4.5mW/°C for operating above Ta=25°C
An operation is not guaranteed.
Radiation resistance design is not used.
Power dissipation is measured when BU2381FV is placed on the board.
zRecommended operating conditions (Ta=25°C)
Parameter
Symbol
Min.
Typ.
−
Max.
3.6
Unit
Supply voltage
V
DD
IH
IL
3.0
V
V
Input "H" voltage range
Input "L" voltage range
Operation temperature range
Output maximum load
V
0.8VDD
0
−
VDD
V
−
0.2VDD
70
V
Topr
−5
−
°C
pF
CL
−
−
15
1/5
BU2381FV
Multimedia ICs
zBlock diagram
Data1a
Data1b
Data1c
71.877274MHz or 90.314686MHz
or 114.54546MHz
PLL1 144M
180M 228M
1 / 2
CLK1
96.016044MHz
1 / 2
1 / 2
14.318182MHz
XTAL_IN
96.016044MHz
48.008022MHz
PLL2
192MHz
XTAL
OSC
CLK2
XTAL_OUT
1 / 4
CLK2ON
FS1
17.734450MHz
14.318182MHz
PLL3
177MHz
1 / 10
REF_CLK
FS2
FS3
zPin descriptions
Functions
Pin No.
Pin name
REFCLK
1
2
14.3MHz / 17.7MHz clock output
Analog VDD
VDD
3
FS3
CLK1, 2 output select with pull up
Analog GND
4
VSS
5
X
IN
Standard crystal input
6
TEST
Input for test mode (normally open)
Standard crystal output
CLK1, 2 output select with pull up
7
X
OUT
8
FS2
CLK1OUT
FS1
9
71M / 90M / 96M / 114MHz clock output
REFCLK output select with pull up
10
11
12
13
14
15
16
CLK2 output control with pull up H : enable L : disable
GND for CLK1, 2 clock output and Logic circuit
CLK2ON
V
SS
DD
CLK2OUT
V
DD for CLK1, 2 clock output and Logic circuit
V
96M / 48M clock output
VSS
GND for REFCLK clock output
V
DD
VDD for REFCLK clock output
2/5
BU2381FV
Multimedia ICs
zInput output circuits
Pin No.
Equivalent circuit
Input PIN
3, 8, 10, 11
To inside IC
with pull−up
(PIN6 : TESTpin with
pull down)
OUTPUT PIN
1, 9, 14
From inside IC
Crystal PIN
5, 7
XTALIN
XTALOUT
To inside IC
3/5
BU2381FV
Multimedia ICs
zElectrical characteristics (Unless specified otherwise Ta=25°C, VCC=3.3V)
Parameter
Power supply current
Output frequency
Symbol
Min.
−
Typ.
40
−
Max.
50
Unit
mA
−
Conditions
I
DD
No load
−
−
−
FS2 : H
FS3 : H
Fclk1-1
Fclk1-2
Fclk1-3
Fclk1-4
Fclk2-1
Fclk2-2
−
−
−
−
−
−
96.016044
71.877274
114.54546
90.314686
96.016044
48.008022
−
−
−
−
−
−
−
−
Xtal (228 / 17) / 2
Xtal (251 / 25) / 2
FS2 : H
FS3 : L
CLK1
FS2 : L
MHz Xtal (224 / 14) / 2
MHz Xtal (164 / 12) / 2
MHz Xtal (228 / 17) / 2
MHz Xtal (228 / 17) / 4
FS3 : L
FS2 : L
FS3 : H
FS2 : L
FS3 : L
CLK2
FS2, 3 :
HL / LH / HH
Fref1-1
Fref1-2
−
−
14.318182
17.73445
−
−
MHz Crystal direct output
MHz Xtal (706 / 57) / 10
FS1 : H
REFCLK
FS1 : L
Duty1 at 100MHz
Duty2 at 100MHz
Rise time
Duty1
Duty2
tr
45
−
50
50
55
−
%
%
Measured at 1/2 VDD
Measured at 1/2 VDD
−
2.5
2.5
30
−
nsec Time between 0.2 VDD and 0.8 VDD
nsec Time between 0.8 VDD and 0.2 VDD
Fall time
tf
−
−
1
2
3
Period jitter 1σ
Period jitter MIN-MAX
Output Lock time
P-J1σ
P-JMINMAX
Tlock
−
−
psec
psec
msec
−
180
−
−
−
1
Note) When input frequency is 14.318182MHz, output frequency is above rated value.
1) Period Jitter 1σ : This value is the standard deviation of an output period when using Time Interval Analyzer with 10,000 sampling.
2) Period Jitter MIN-MAX : This value is the max range of an output period when using Time Interval Analyzer with 10,000 sampling.
3) Output Lock time : This value is the time until the output clock gets stable after the power supply voltage leads to 3.0V.
4/5
BU2381FV
Multimedia ICs
zApplication example
REFCLK output
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
0.1µF
FS3 H or L
CLK2 output
0.1µF
0.1µF
CLK2 ON H or L
FS1 H or L
CLK1 output
FS2 H or L
Note) The BU2381FV is placed on the board normally.
A decoupling capacitor (0.1µF) needs to be placed between pin2 and pin4, pin13 and pin12, pin16 and pin15.
The decoupling capacitor is an close to the above pins as possible.
5/5
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0
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