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www.rohm.com
2009.04 - Rev.A
2009 ROHM Co., Ltd. All rights reserved.
High-performance Clock Generator Series
DVD-audio Reference
Clock Generators for A/V Equipments
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
Reference frequency [MHz]
36.8640
Output frequency[MHz]
DVD VIDEO
2
54.0000
1
27.0000
1/2
13.5000
-
DVD / CD AUDIO
(Switching outputs)
768fs
36.8640 / 33.8688
512fs
-
384fs
18.4320 / 16.9344
256fs
-
SYSTEM
768fs
33.8688
384fs
16.9344
Jitter 1
σ [psec]
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
V
Input voltage
VIN
-0.5 ~ VDD+0.5
V
Storage temperature range
Tstg
-30 ~ +125
℃
Power dissipation
PD
630
*1
450
*2
mW
*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
V
Input H voltage
VIH
0.8VDD ~ VDD
V
Input L voltage
VIL
0.0 ~ 0.2VDD
V
Operating temperature
Topr
-5 ~ +70
-10 ~ +70
℃
Maximum output load
CL
15
pF
No.09005EAT03