BU2381FV Datasheet, PDF (4/5 Pages) Rohm – Multimedia ICs Clock generator for digital still camera

Multimedia ICs
BU2381FV
zElectrical characteristics (Unless specified otherwise Ta=25°C, VCC=3.3V)
Parameter
Symbol
Min.
Typ.
Max. Unit
Conditions
Power supply current
IDD
−
40
50 mA No load
Output frequency
FS2 : H
FS3 : H
CLK1
FS2 : H
FS3 : L
FS2 : L
FS3 : L
FS2 : L
FS3 : H
CLK2
FS2 : L
FS3 : L
FS2, 3 :
HL / LH / HH
REFCLK
FS1 : H
FS1 : L
Duty1 at 100MHz
−
Fclk1-1
Fclk1-2
Fclk1-3
Fclk1-4
Fclk2-1
Fclk2-2
Fref1-1
Fref1-2
Duty1
−
−
−
−
96.016044
−
−
− Xtal ∗ (228 / 17) / 2
−
71.877274
−
− Xtal ∗ (251 / 25) / 2
−
114.54546
− MHz Xtal ∗ (224 / 14) / 2
−
90.314686
− MHz Xtal ∗ (164 / 12) / 2
−
96.016044
− MHz Xtal ∗ (228 / 17) / 2
−
48.008022
− MHz Xtal ∗ (228 / 17) / 4
−
14.318182
− MHz Crystal direct output
−
17.73445
− MHz Xtal ∗ (706 / 57) / 10
45
50
55
% Measured at 1/2 VDD
Duty2 at 100MHz
Duty2
−
50
−
% Measured at 1/2 VDD
Rise time
tr
−
2.5
− nsec Time between 0.2 VDD and 0.8 VDD
Fall time
Period jitter 1σ
tf
−
2.5
− nsec Time between 0.8 VDD and 0.2 VDD
P-J1σ
−
30
− psec ∗1
Period jitter MIN-MAX P-JMINMAX −
180
− psec ∗2
Output Lock time
Tlock
−
−
1 msec ∗3
Note) When input frequency is 14.318182MHz, output frequency is above rated value.
∗1) Period Jitter 1σ : This value is the standard deviation of an output period when using Time Interval Analyzer with 10,000 sampling.
∗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 : This value is the time until the output clock gets stable after the power supply voltage leads to 3.0V.
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