BU2382FV [ROHM]
Clock generator for digital still camera; 对于数码相机的时钟发生器
| 型号： | BU2382FV |
| 厂家： | 
ROHM |
| 描述： | Clock generator for digital still camera |
| 文件： | 总7页 (文件大小：60K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
BU2382FV
Multimedia ICs
Clock generator for digital still camera
BU2382FV
BU2382FV is a high-performance 2-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 CDS, USB with standard clock input
2) No external elements required
3) Standard clocks apply to two kinds of NTSC/PAL
4) Power down control in each 2-channel PLL
5) Single power supply of 3.3V operating
6) 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
VDD
Input voltage
V
IN
V
Storage temperature range
Power dissipation
Tstg
Pd
°C
mW
IC destruction is not occurred, however, operation can not be guaranteed.
Derating : 4.5mW/°C for operation above Ta=25°C.
This product is not designed for protection against radioactive rays.
Power dissipation is the rate when the IC is mounted on the board.
zRecommended operating conditions (Ta=25°C)
Parameter
Power supply voltage
Input "H" voltage range
Input "L" voltage range
Operating temperature
Output load
Symbol
Min.
3.0
Typ.
−
Max.
3.6
Unit
V
DD
V
V
VIH
VIL
0.8VDD
0
−
VDD
−
0.2VDD
+70
V
Topr
CL
−5
−
°C
pF
−
−
15
1/6
BU2382FV
Multimedia ICs
zBlock diagram
PLL1
NT_PAL SEL PLL1 Internal oscilation
XTAL_IN
L
L
H
H
L
H
L
97.253572MHz
141.875800MHz
96.923078MHz
143.754548MHz
CLK1 clock output
1 / 2
XTAL
XTAL_OUT
H
NT : 14.318182MHz
PAL : 17.734475MHz
OE_CLK1
PLL2
PLL2 Internal oscilation
NT_PAL
CLK2 clock output
1 / 2
L
H
95.997484MHz
95.996902MHz
OE_CLK2
REF_CLK clock output
NT_PAL SEL
REF−CLK (MHz)
CLK1 (MHz)
48.626786
CLK2 (MHz)
47.998742
L
L
L
H
L
17.734475
17.734475
14.318182
14.318182
XTAL (170 / 31) /2 XTAL (249 / 46) /2
70.937900 47.998742
XTAL (360 / 45) /2 XTAL (249 / 46) /2
48.461539 47.998451
H
H
XTAL (176 / 26) /2 XTAL (295 / 44) /2
71.877274 47.998451
XTAL (502 / 50) /2 XTAL (295 / 44) /2
H
2/6
BU2382FV
Multimedia ICs
zPin descriptions
Pin No.
Pin name
Functions
1
2
VDD for clock output
V
DD
2
GND for clock output
Crystal output
V
SS
2
3
REF_CLK
TEST1
AVDD
4
Test mode control pin
Analog VDD
5
6
Analog GND
AVSS
7
Standard crystal input
Standard crystal output
XTALIN
XTALOUT
OE_CLK2
CLK2
8
9
Output enable pin for CLK2 (H : enable, L : output L fixed)
10
11
12
13
14
15
16
CLK2 clock output
Digital GND
DVSS
Digital VDD
DVDD
NT / PAL select (L : PAL, H : NTSC)
Output select
NT_PAL
SEL
CLK1 clock outpt
CLK1
Output enable pin for CLK1 (H : enable, L :output Lfixed)
OE_CLK1
V
V
DD
2
OE_CLK1
16
1
2
3
4
5
6
7
8
SS2
CLK1
15
REF_CLK
TEST1
SEL
14
NT_PAL
DVDD
13
12
11
10
9
AVDD
AVSS
DVSS
XTAL IN
XTAL OUT
CLK2
OE_CLK2
3/6
BU2382FV
Multimedia ICs
zInput output circuits
Pin No.
Equivalent circuit
Input PIN
(Schmidt trigger)
9, 13, 14, 16
(With pull_up)
4
(With pull_down)
To IC inside
Output PIN
3, 10, 15
From IC inside
Crystal PIN
7, 8
To IC inside
4/6
BU2382FV
Multimedia ICs
zElectrical characteristics (Unless specified otherwise Ta=25°C, VCC=3.3V, crystal frequency=14.318182MHz )
Parameter
Output H voltage
Output L voltage
Symbol
VOH
VOL
Min.
Typ.
−
Max.
Unit
V
Conditions
2.4
−
0.4
−
IOH=4.0mA
−
V
−
IOL=4.0mA
0.2VDD
V
Input VthL
Input VthH
3
VthL
VthH
Vhys
IDD
−
1
−
−
−
0.8VDD
−
V
3
−
1
0.4
30
V
Vhys=VthH-VthL
No load
Hysteresis width
3
Operating circuit current
45
mA
CLK1_LL
CLK1_LH
CLK1_HL
CLK1_HH
48.626786
70.937900
48.461539
71.877274
XTAL 170/31/2 (XTAL=17.734475MHz)
XTAL 360/45/2 (XTAL=17.734475MHz)
XTAL 176/26/2 (XTAL=14.318182MHz)
XTAL 502/50/2 (XTAL=14.318182MHz)
CLK1
−
−
MHz
MHz
CLK2_L
CLK2_H
47.998742
47.998451
XTAL 249/46/2 (XTAL=17.734475MHz)
XTAL 295/44/2 (XTAL=14.318182MHz)
CLK2
−
−
Duty
JsSD
JsABS
tr
45
−
50
30
55
−
%
1/2 VDD test
Duty
psec
psec
nsec
nsec
msec
1σ short time jitter
MIN.-MAX.
Jitter 1σ
Jitter MIN-MAX
−
180
2.5
2.5
−
−
−
−
20% to 80% time of VDD
20% to 80% time of VDD
2
Rise time
tf
−
−
Fall time
tlock
−
1
Output Lock time
Note) Output frequency is determined by the operation expression (Frequency divide) input to XTAL IN.
Output at 27MHz input is shown above.
Jitter is value when using Time interval analyzer with 10000 sampling.
1) Low and high limit voltage in the schmitt trigger input Pin having hysteresis features shown in 3 diagram.
2) Time that output takes to stabilize in the specific frequency range after the power supply reaches to 3.0V.
3) Make reference to the diagram.
0.2VDD
0.8VDD
Vhys
0
VthL
1/2VDD
VthH
Input (V)
5/6
BU2382FV
Multimedia ICs
zApplication example
V
V
DD
2
OE_CLK1
CLK1
H or L
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SS
2
CLK1 output
H or L
N T : 14.38182MHz
PAL : 17.734475MHz
REF_CLK
TEST1
SEL
NT_PAL
DVDD
H or L
AVDD
AVSS
DVSS
XTAL IN
XTAL OUT
CLK2
CLK2 output
H or L
OE_CLK2
Note) The BU2382FV is basically placed on the board.
Decoupling capacitance (0.1µF) need to be placed between Pin1 (VDD2) and Pin2 (VSS2),
Pin5 (AVDD) and Pin6 (AVSS), Pin11 (DVSS) and Pin12 (DVDD).
To obtain accurate frequency, capacitance (pF) need to be placed between Pin8 (XTAL IN)
and Pin6 (AVSS). Pin7 (XTAL OUT) and Pin6 (AVSS).
Tantalum capacitance (10 to 100µF), ferrite beads may need to be placed to prevent power
supply drop in certain board's case.
To reduce high frequency noise, selected bypass capacitors (<1Ω at problem high frequency)
maybe used for power pin as close to BU2382FV as possible.
6/6
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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