BU2382FV Datasheet, PDF (2/2 Pages) Rohm – Clock generator for digital still camera

Recommended Operating Conditions (Ta=25°C)
Parameter
Power supply voltage
Input H voltage range
Input L voltage range
Operating temperature
Output load
Symbol Min. Typ. Max. Unit
VDD
3.0
–
3.6
V
VIH 0.8VDD
–
VDD
V
VIL
0
–
0.2VDD
V
Topr
–5
–
70
°C
CL
–
–
15
pF
Electrical Characteristics (Unless otherwise noted; Ta=25°C, Vcc=3.3V, Xtal frequency=14.318182MHz)
Parameter
Symbol Min.
Typ. Max. Unit
Conditions
Output H voltage
Output L voltage
Input thL *3
Input thH *3
Hysteresis width *3
Operating circuit current
CLK1
CLK2
Duty
Jitter
Jitter Min.-Max.
VOH
2.4
–
–
VOL
–
–
0.4
VthL 0.2VDD
–
–
VthH
–
–
0.8VDD
Vhys
–
0.4
–
IDD
–
30
45
CLK1_LL
48.626786
CLK1_LH
–
70.937900
–
CLK1_HL
48.461539
CLK1_HH
71.877274
CLK2_L
CLK2_H
47.998742
–
–
47.998451
Duty
45
50
55
JsSD
–
30
–
JsABS
–
180
–
V
V
V
V
V
mA
MHz
MHz
%
psec
psec
IOH=–4.0mA
IOL=4.0mA
*1
*1
Vhys=VthH–VthL
No load
XTAL´170/31/2 (XTAL=17.734475MHz)
XTAL´360/45/2 (XTAL=17.734475MHz)
XTAL´176/26/2 (XTAL=14.318182MHz)
XTAL´502/50/2 (XTAL=14.318182MHz)
XTAL´249/46/2 (XTAL=17.734475MHz)
XTAL´295/44/2 (XTAL=14.38182MHz)
1/2VDD test
1 short time jitter
Min.–Max.
Rise time
tr
–
2.5
–
nsec
Fall time
tf
–
2.5
–
nsec
Output Lock time
tlock
–
–
1
msec
Note) Output frequency is determined by the operation expression (Frequency divide) input to XTAL IN.
Output at 27MHz input is shown above.
Jitter is value when using Time interval analyzer with 10000 sampling.
1 Low and high limit voltage in the schmitt trigger input Pin having hysteresis features shown in 3 diagram.
2 Time that output takes to stabilize in the specific frequency range after the power supply reaches to 3.0V.
3 Make reference to the diagram.
Block Diagram
20% ~ 80% time of VDD
20% ~ 80% time of VDD
*2
0.2VDD
Vhys
0.8VDD
VthL 1/2VDD VthH Input(V)
1 VDD2
OE_CLK1 ₁₆
H or L
N T:14.38182MHz
PAL:17.734475MHz
2 VSS2
3 ^REF_CLK
4 TEST1
CLK1 15
SEL ₁₄
NT_PAL 13
CLK1 output
H or L
H or L
5 AVDD
DVDD ₁₂
6 AVSS
DVSS ₁₁
7 XTALIN
CLK2 ₁₀
CLK2 output
8 XTALOUT
BU2382FV
OE_CLK2 ₉
H or L