BU2394KN_08 Datasheet, PDF (1/17 Pages) Rohm – 3ch Clock Generator for Digital Cameras

TECHNICAL NOTE
High-performance Clock Generator Series
3ch Clock Generator
for Digital Cameras
BU2394KN,BU2396KN
●Description
These clock generators are an IC generating three types of clocks – CCD, USB, and VIDEO clocks – necessary for digital
still camera systems and digital video camera systems, with a single chip through making use of the PLL technology.
Generating these clocks with a single chip allows for the simplification of clock system, little space occupancy, reduction in
the number of components used for mobile camera equipment, which is becoming increasingly downsized and less costly.
●Features
1) Connecting a crystal oscillator generates multiple clock signals with a built-in PLL.
2) The CCD clock provides switching selection outputs.
3) Providing the output of low period-jitter clock.
4) Incorporating compact package VQFN20 most suited for mobile devices.
5) Single power supply of 3.3 V
●Applications
Generation of clocks used in digital still camera and digital video camera systems
●Lineup
Supply voltage
Operating temperature range
Reference input clock
Output CCD clock
Output USB clock
Output VIDEO clock
BU2394KN
3.0V～3.6V
-5～＋70℃
14.318182MHz
28.636363MHz
135.000000MHz
110.000000MHz
108.000000MHz
98.181818MHz
48.008022MHz
14.318182MHz
17.734450MHz
BU2396KN
3.0V～3.6V
-5～＋70℃
12.000000MHz
36.000000MHz
30.000000MHz
24.000000MHz
12.000000MHz
27.000000MHz
●Absolute Maximum Ratings（Ta=25℃）
Parameter
Symbol
Limit
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
530
mW
*1 Operating temperature is not guaranteed.
*2 In the case of exceeding Ta = 25℃, 5.3mW 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