BU2394KN_08 Datasheet, PDF (13/17 Pages) Rohm – 3ch Clock Generator for Digital Cameras

●BU2394KN Application Circuit / Description of Terminal
1：AVDD
0.1uF
2：AVDD
3：AVSS
4：XIN
R
5：XOUT
0.1uF
for Video
14.318182MHz
17.734450MHz
for USB
48.008022MHz
BU2394KN
VQFN-20
15：VDD1
14：VDD1
13：VSS1
12：CLK2ON
11：CLK1OUT
0.1uF
XIN 4
XOUT 5
for CCD
135.000000MHz
110.000000MHz
108.000000MHz
98.181818MHz
XTAL_SEL 7
CLK2ON 12
FS1
10
FS2
9
FS3
8
XTAL
OSC
1／2
DATA
PLL1
135.000000MHz
108.000000MHz
110.000000MHz
98.181818MHz
11 CLK1
PLL2
48.008022MHz
1／4
16 CLK2
PLL3
17.734450MHz
1／10
14.318182MHz
19 ^REF_CLK
Fig.75
Fig.76
Description of Terminal
PIN No.
PIN NAME
1
AVDD
2
AVDD
3
AVSS
4
XIN
5
XOUT
6
TEST1
7
XTAL_SEL
8
FS3
9
FS2
10
FS1
11
CLK1OUT
12
CLK2ON
13
VSS1
14
VDD1
15
VDD1
16
CLK2OUT
17
VSS2
18
VDD2
19
REF_CLK
20
TEST2
Function
Analog power source
Analog power source
Analog GND
Crystal IN
Crystal OUT
TEST pin, normally open, equipped with pull-down
Crystal oscillator selection, H: 28.636 MHz, L: 14.318 MHz, equipped with pull-up
CLK1,2 output selection, equipped with pull-up
CLK1,2 output selection, equipped with pull-up
REFCLK output selection, equipped with pull-up
110M/98M/108M/135M output
CLK2 output control, H: Enable, L: Disable, equipped with pull-up
CLK1/CLK2 & Internal digital GND
CLK1/2 & Internal digital power supply
CLK1/2 & Internal digital power supply
48M output
REFCLK GND
REFCLK power supply
14.3M/17.7M output
TEST pin, normally open, equipped with pull-down
Note) Basically, mount ICs to the substrate for use. If the ICs are not mounted to the substrate, the characteristics of ICs may
not be fully demonstrated.
Mount 0.1uF as bypass capacitors in the vicinity of the IC pins between 1&2 PIN and 3PIN, 13PIN and 14&15PIN, and
17PIN and 18PIN, respectively.
※Even though we believe that the example of the application circuit is worth of a recommendation, please be sure to
thoroughly recheck the characteristics before use.
※As to the jitters, the TYP values vary with the substrate, power supply, output loads, noises, and others.
Besides, for the use, the operating margin should be thoroughly checked.
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