BU2382FV Datasheet, PDF (5/7 Pages) Rohm – Clock generator for digital still camera

Multimedia ICs
BU2382FV
zElectrical characteristics (Unless specified otherwise Ta=25°C, VCC=3.3V, crystal frequency=14.318182MHz )
Parameter
Symbol
Min.
Typ.
Max. Unit
Conditions
Output H voltage
VOH
2.4
−
−
V IOH=4.0mA
Output L voltage
VOL
−
−
0.4
V _IOL=4.0mA
Input VthL ∗3
VthL
0.2VDD
−
−
V ∗1
Input VthH ∗3
VthH
−
−
0.8VDD V ∗1
Hysteresis width ∗3
Vhys
−
0.4
−
V Vhys=VthH-VthL
Operating circuit current
IDD
−
30
45 mA No load
CLK1
CLK1_LL
CLK1_LH
CLK1_HL
CLK1_HH
48.626786
XTAL ∗170/31/2 (XTAL=17.734475MHz)
−
70.937900
48.461539
−
MHz
XTAL ∗360/45/2 (XTAL=17.734475MHz)
XTAL ∗176/26/2 (XTAL=14.318182MHz)
71.877274
XTAL ∗502/50/2 (XTAL=14.318182MHz)
CLK2
CLK2_L
CLK2_H
−
47.998742
47.998451
−
MHz
XTAL ∗249/46/2 (XTAL=17.734475MHz)
XTAL ∗295/44/2 (XTAL=14.318182MHz)
Duty
Jitter 1σ
Jitter MIN-MAX
Duty
45
50
55
% 1/2 VDD test
JsSD
−
30
− psec 1σ short time jitter
JsABS
−
180
− psec MIN.-MAX.
Rise time
tr
−
2.5
− nsec 20% to 80% time of VDD
Fall time
tf
−
2.5
− nsec 20% to 80% time of VDD
Output Lock time
tlock
−
−
1 msec ∗2
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.
0.2VDD
Vhys
0.8VDD
0
VthL 1/2VDD VthH
Input (V)
5/6