BU2385KN ROHM Co. Ltd., BU2385KN Datasheet - Page 4

• Manufacturer Part Number: BU2385KN
• Description: Clock Generator For Digital Still Camera
• Manufacturer: ROHM Co. Ltd.

Multimedia ICs
Note) When input frequency is 14.31818MHz, output frequency is above rated value.
1 Period Jitter 1
2 Period Jitter MIN-MAX : This value is the max range of an output period when using Time Interval Analyzer with 10,000 sampling.
3 Output Lock time
Electrical characteristics (Unless otherwise noted, Ta=25GC, V
Application circuit
Power supply current
output frequency
CLK1 FS2:H FS3:H
CLK2 FS2:L FS3:L
REFCLK FS1:H
Duty1 at under 100MHz
Duty2 at upper 100MHz
Rise time
Fall time
Period Jitter 1
Period Jitter MIN-MAX
Output Lock time
While crystal shows 28.636363MHz, XTAL_SEL=H, in case of 14.31818MHz, TXAL_SEL=L
FS2:H FS3:L
FS2:L FS3:L
FS2:L FS3:H
FS2,3:HL LH HH
Parameter
FS1:L
: This value is the standard deviation of an output period when using Time Interval Analyzer with 10,000 sampling.
: Time between voltage supply leads to 3.0V and output clock gets stable.
Note) BU2385KN is placed on the board normally.
Symbol
AVDD
AVDD
XOUT
Fclk1-1
Fclk1-2
Fclk1-3
Fclk1-4
Fclk2-1
Fclk2-2
AVSS
Fref1-1
Fref1-2
P-J1
P-J
MINMAX
Duty1
Duty2
Tlock
XIN
I
The decoupling capacitor is as close to the above pins as possible.
A decoupling capacitor (0.1 F) needs to be placed between
Pin1,2 and Pin3, Pin13 and Pin14,15, Pin17 and Pin18.
Tf
Tr
DD
Min.
45
-
BU2385KN
QFN 20
96.016044
71.877274
114.54546
90.314686
96.016044
48.008022
14.318182
17.734450
Typ.
180
2.5
2.5
40
50
50
30
Max.
CC
50
55
1
=3.3V)
CLK1_OUT
CLK2ON
VSS1
VDD1
VDD1
msec
nsec
nsec
psec
psec
MHz
MHz
MHz
MHz
MHz
MHz
Unit
mA
%
%
No load
Xtal
Xtal
Xtal
Xtal
Xtal
Xtal
Crystal direct output
Xtal
Measured at 1/2V
Measured at 1/2V
Time between 0.2V
Time between 0.2V
1
2
3
*
*
*
*
*
*
*
14.318182MHz
17.734450MHz
48.008022MHz
96.016044MHz
(228/17)/2
(251/25)/2
(224/14)/2
(164/13)/2
(228/17)/2
(228/17)/4
(706/57)/10
114.54546MHz
96.016044MHz
71.877274MHz
90.016044MHz
Conditions
DD
DD
BU2385KN
DD
DD
and 0.8V
and 0.8V
DD
DD
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