ROHM BU2285FV User Guide
Summary
Advanced clock generators crucial for building high-definition A/V equipment, including DVD player systems. This single-chip device utilizes PLL technology to reliably output three essential timing signals: VIDEO, AUDIO, and SYSTEM clocks, featuring a specialized DVD-Audio reference video clock with superb C/N characteristics. The technical manual provides comprehensive specifications, including performance parameters and operating guidelines, making it an ideal component for system designers fabricating reliable audio visual and consumer electronics products.
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High-performance Clock Generator Series
DVD-audio Reference Clock Generators for A/V Equipments
BU2285FV,BU2363FV No.09005EAT03
●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 3.0 ~ 3.6 Reference frequency [MHz] 36.8640 36.8640
DVD VIDEO 1 27.0000 27.0000
1/2 13.5000 － 768fs 36.8640 / 33.8688 36.8640 / 33.8688
Output frequency[MHz] DVD / CD AUDIO 512fs － －
(Switching outputs) 384fs 18.4320 / 16.9344 18.4320 / 16.9344
256fs － － 768fs 33.8688 33.8688
SYSTEM
384fs 16.9344 16.9344
Jitter 1σ [psec] 50 50 C/N [d B] (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 -0.5 ~ +7.0 V Input voltage VIN -0.5 ~ VDD+0.5 -0.5 ~ VDD+0.5 V Storage temperature range Tstg -30 ~ +125 -30 ~ +125 ℃ Power dissipation PD 630 *1 450 *2 m W *1 In the case of exceeding at Ta = 25℃, 6.3m W should be reduced per 1℃ *2 In the case of exceeding at Ta = 25℃, 4.5m W 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 3.0 ~ 3.6 V Input H voltage VIH 0.8VDD ~ VDD 0.8VDD ~ VDD V Input L voltage VIL 0.0 ~ 0.2VDD 0.0 ~ 0.2VDD V Operating temperature Topr -5 ~ +70 -10 ~ +70 ℃ Maximum output load CL 15 15 p F
www.rohm.com 2009.04 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM BU2285FV User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 17 |
| File Size | 473.84 KB |
| Published | July 16, 2026 |
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Frequently Asked Questions
What types of clocks are generated by these ICs?
They generate VIDEO, AUDIO, and SYSTEM clocks using a single PLL technology.
Is the video clock suitable for high-definition images?
Yes, the unique VIDEO clock achieves high C/N characteristics required for HDTV imaging.
What is the recommended supply voltage range?
The BU2285FV and BU2363FV both operate on a recommended supply voltage (VDD) of 3.0 to 3.6 V.
Are these components suitable for mission-critical systems?
No, the products are not designed or manufactured for systems requiring extremely high reliability, such as medical or aerospace equipment.