BU2373FV_11 Datasheet, PDF (2/19 Pages) Rohm – High Performance VCOs for Image Sampling

BU2373FV,BU2374FV
Technical Note
●Electrical characteristics
◎BU2373FV(Ta=25℃, VDD=3.0V, unless otherwise specified.)
Parameter
Limits
Symbol
Min.
Typ.
(VCO)
VCO_IN input impedance
Zi
-
10
Consumption current
(while in normal mode)
Idd(VCO)
-
15
Consumption current
(while in standby mode)
Idd_st(VCO)
-
-
Control voltage
VI
0.5
-
Max.
-
-
1
VDD-0.5
Unit Conditions
MΩ
mA With 60 MHz output
µA
VCO_INHIBIT=”H”,
VCOIN=”L”
V
Oscillation range
frange
37
-
60
MHz
Bias resistor range
Rbias
1.5
-
2.0
KΩ ^*1
Frequency sensitivity
β1
-
23
-
MHz/V ^*2
Output duty
Duty
45
50
55
%
Measured
at a voltage of 1/2 of VDD
(PFD)
Consumption current
(while in normal mode)
Idd(PFD)
-
0.5
-
mA
When 1 MHz is input to
the FIN_A and B
Consumption current
(while in standby mode)
Idd_st(PFD)
-
-
1
µA
PFD_INHIBIT=”H”,
FIN_A,B=”L”
*1 Design guaranteed figures 37 MHz to 45 MHz when Rbias = 2.0 kΩ
50 MHz to 60 MHz when Rbias = 1.5 kΩ
*2 Frequency sensitivity
{ f1 (VCOIN=2.0V)  f2 (VCOIN = 1.0V) } / 1.0V
*3 If the SELECT pin is set to “H” and the output frequency is reduced to 1/2, the frequency range and the frequency sensitivity will be all reduced to 1/2.
BU2373FV(Ta=25℃, VDD=5.0V, unless otherwise specified.)
Parameter
Symbol
Min.
Limits
Typ.
(VCO)
VCO_IN input impedance
Zi
-
10
Consumption current
(while in normal mode)
Idd(VCO)
-
25
Consumption current
(while in standby mode)
Idd_st(VCO)
-
-
Control voltage
VI
0.5
-
Max.
-
-
1
VDD-0.5
Unit
Conditions
MΩ
mA With 60 MHz output
µA
VCO_INHIBIT=”H”,
VCOIN=”L”
V
Oscillation range
frange
43
-
100
MHz
Bias resistor range
Rbias
1.6
-
2.5
KΩ ^*1
Frequency sensitivity
β1
-
25
-
MHz/V ^*2
Output duty
Duty
45
50
55
%
Measured
at a voltage of 1/2 of VDD
(PFD)
Consumption current
(while in normal mode)
Idd(PFD)
-
1
-
mA
When 1 MHz is input to
the FIN_A and B
Consumption current
(while in standby mode)
Idd_st(PFD)
-
-
1
µA
PFD_INHIBIT=”H”,
FIN_A&B=”L”
*1 Design guaranteed figures 43 MHz to 77 MHz when Rbias = 2.5 kΩ
75 MHz to 100 MHz when Rbias = 1.6 kΩ
*2 Frequency sensitivity
{ f1 (VCOIN = 3.5V)  f2 (VCOIN=1.5 V) } / 2.0V
*3 If the SELECT pin is set to “H” and the output frequency is reduced to 1/2, the frequency range and the frequency sensitivity will be all reduced to 1/2.
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2/18
2011.08 - Rev.B