TECHNICAL NOTE
High-performance Clock Generator Series
Clock Generator
with Built-in VCXO
for Audio/Video Equipments
BU2365FV
●
Description
The ROHM Clock Generator is an IC allowing for the generation of multiple clocks by a single chip through the connection of
a single crystal oscillator. The BU2365FV incorporates the ROHM’s unique PLL technology to provide the generation of
multiple high C/N clocks necessary for the DVD recorder system. This Clock Generator has the built-in high-precision
VCXO function and allows for high-precision synchronization with DVD Video clocks. It also has a built-in buffer having high
driving force and allows the supply of multiple 27MHz Video clocks for the system, thus providing the reduced number of the
system components.
●
Features
1) The ROHM’s unique PLL technology allows for the generation of high C/N clocks.
2) Built-in high precision VCXO, which is essential for the DVD recorder system
3) Built-in buffer having high driving force (Load capacity/output CL
=
50pF, 27MHz drive, 1
×
input / 2
×
outputs)
4) Built-in half pulse clock protection [HPC]
5) Built-in power down function, Icc
=
0 uA(typ.)
6) SSOP-B24 package
7) Single power supply of 3.3 V
●
Application
DVD recorder
●
Absolute Maximum Ratings
（
Ta=25
℃）
Parameter Symbol
Limit
Unit
Supply voltage
VDD
－
0.3
～
7.0
Ｖ
Input voltage
VIN
－
0.3
～
VDD+0.3
Ｖ
Storage temperature range
Tstg
－
30
～
125
℃
Power dissipation
PD
820
mW
*1 Operation is not guaranteed.
*2 In the case of exceeding Ta = 25
℃
, 8.2mW should be reduced per 1
℃
.
*3 The radiation-resistance design is not carried out.
*4 Power dissipation is measured when the IC is mounted to the printed circuit board.
Sep. 2008
