BU2185F ROHM Co. Ltd., BU2185F Datasheet - Page 4

• Manufacturer Part Number: BU2185F
• Description: Clock Generator
• Manufacturer: ROHM Co. Ltd.

•
4
Multimedia ICs
When XTAL2 = 36.864MHz (XTAL1 is shorted to GND)
When XTAL2 = 18.432MHz (XTAL1 is shorted to GND)
Input low level voltage
Input high level voltage
Output low level voltage
Output high level voltage
Output low level voltage
Output high level voltage
Operating circuit current
CLK1 frequency1
CLK1 frequency2
CLK2 frequency
CLK3 frequency
CLK1 frequency1
CLK2 frequency
CLK3 frequency
DUTY
JITTER
JITTER
27MHz S / N
Electrical characteristics (unless otherwise noted, Ta = 25°C, V
Parameter
CLK2SN
CLK1-1
CLK1-2
Symbol
DUTY
GND, XTAL2 = 36.864MHz, 18.43MHz) )
CLK2
CLK3
CLK1
CLK2
CLK3
Jabs
V
V
V
V
J1s
V
V
I
DD
OL
OH
OL
OH
IH
IL
0.7
DV
Min.
2.4
DD
45
—
—
—
—
—
—
—
—
—
—
—
—
—
—
-0.5
V
DD
36.8640
18.4320
27.0000
33.8688
18.4320
27.0000
33.8688
Typ.
100
600
40
50
65
—
—
—
—
—
—
0.3
Max.
0.4
0.4
60
55
—
—
—
—
—
—
—
—
—
—
—
—
—
V
DD
DD
(AV
MHz
MHz
MHz
MHz
MHz
MHz
MHz
psec
psec
Unit
mA
dB
%
V
V
V
V
V
V
DD
) = 3.3V, CL
CTRL1, CTRL2, OE
CTRL1, CTRL2, OE
I OL = 4.0mA CLK1, CLK2, CLK3
I OH = – 4.0mA CLK1, CLK2, CLK3
I OL = 0.5mA XTAL1OUT, XTAL2OUT
I OH = – 0.5mA XTAL1OUT, XTAL2OUT
No load
XTAL2 output
XTAL2 1 / 2 output CTRL1 = L, CTRL2 = L
XTAL2
XTAL2
XTAL2 output
XTAL2
XTAL2
1 / 2V
Reference value (1sigma)
Reference value (min.-to-max. width for jitter)
27MHz 20kHz RBW = 1kHz, SPAN = 200kHz
DD
375 / 128 / 4
147 / 40 / 4
375 / 64 / 4
147 / 20 / 4
15
Conditions
P
F, XTAL1 = shorted to
CTRL1 = H, CTRL2 = H
CTRL1 = H, CTRL2 = L
—
—
—
—
BU2185F
CTRL2 = L
CTRL2 = L
CTRL2 = H
CTRL2 = H