BU2280FV_08 Datasheet, PDF (22/25 Pages) Rohm – DVD-video Reference Clock Generators for Audio/Video Equipments

●Example of application circuit
◎BU2362FV
27.0000MHz
27.0000MHz
1:VDD2
2:VSS2
3:CLK27M
4:TEST
5:AVDD
6:AVSS
7:XTALOUT
8:XTALIN
16:CLK36M
15:CLK33M
14:FSEL1
13:CLK16M
12:DVDD
11:DVSS
10:CLK512FS1
9:CLKA
36.8640MHz
33.8688MHz
H:44.1KHz mode
L:48KHz mode
16.9344MHz
22.5792MHz
or 24.5670MHz
16.9344MHz
or 36.8640MHz
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Fig.128
PIN NAME
VDD2
VSS2
CLK27M
TEST
AVDD
AVSS
XTALOUT
XTALIN
CLKA
CLK512FS
DVSS
DVDD
CLK16M
FSEL1
CLK33M
CLK36M
Function
Power supply for CLK27, CLK36M
GND for CLK27, CLK36M
27MHz Clock output terminal
Input pin for TEST : with pull-down
(Please set ”L” or OPEN, normally)
Power supply for Analog block
GND for Analog block
Crystal output terminal
Crystal input terminal
CLKA output terminal (16.9344MHz or 36.8640MHz)
512fs Clock output terminal (22.5792MHz or 24.5760MHz)
Power supply for Digital block
GND for Digital block
16.9344MHz Clock output terminal
CLKA or CLK512FS pin output select : with pull-up
33.8688MHz Clock output terminal
36.8640MHz Clock output terminal
●Cautions on use (BU2362FV)
Basically, mount ICs to the printed circuit board for use. (If the ICs are not mounted to the printed circuit board, the
characteristics of ICs may not be fully demonstrated.)
Mount 0.1F capacitors in the vicinity of the IC PINs between 1PIN (VDD2) and 2PIN (VSS2), 5PIN (AVDD) and 6PIN
(AVSS), 11PIN (DVSS) and 12PIN (DVDD), respectively.
For the fine-tuning of frequencies, insert several numbers of pF in the 7PIN and 8PIN to GND.
Depending on the conditions of the printed circuit board, mount an additional electrolytic capacitor between the power
supply and GND terminal.
For EMI protection, it is effective to put ferrite beads in the origin of power supply to be fed to BU2362FV from the
printed circuit board or to insert a capacitor (of 1Ω or less), which bypasses high frequency desired, between the
power supply and the GND terminal.
*Refer to the BU2362FV Example of application circuit for BU2288FV Example of application circuit.
Even though we believe that the example of recommended circuit is worth of a recommendation, please be sure to thoroughly
recheck the characteristics before use.
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