BU2374FV Datasheet, PDF (1/8 Pages) Rohm – VCO + phase comparator IC for PLL system

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BU2374FV
VCO + phase comparator IC for PLL system
BU2374FV
BU2374FV is a VCO+phase comparator IC used to construct PLL system. PLL system is constructed and low
jitter clocks can be generated by adopting external LPF and divider. Through a mechanism incorporated in this
IC the output could be switched into quarter. Another function can set in the center point of frequency by
adjusting external resistance.
!Applications
TV
!Features
1) VDD=3.3V±5% operating guaranteed
2) Oscillating range of VCO is 37MHz~60MHz
3) High-speed edge trigger type phase comparator
4) VCO can be fine-adjusted by external resistor.
5) VCO and phase comparator can be controlled
independently.
6) Small SSOP-B14 package
!External dimensions (Unit : mm)
5.0 ± 0.2
14 8
1
7
0.15 ± 0.1
0.1
0.65 _{0.22 ± 0.1}
SSOP-B14
!Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Applied voltalge
Inpuit voltage
Power dissipation
VDD
−0.5 to +7.0
VIN
−0.5 to VDD+0.5
Pd
400^∗
Storage temperature
Tstg
−30 to +125
∗An operation is not guaranteed.
∗In case it is used at Ta=25°C or more, 4.0mW is reduceed at every 1°C.
∗Radiation resistance design is not used.
∗Power dissipation is measured when BU2374FV is placed on the board.
Unit
V
V
mW
°C
!Recommended operating conditions(Ta=25°C)
Parameter
Symbol
Min.
Typ.
Supply voltage
VDD
3.15
−
Input H voltage range
VIH
0.8VDD
−
Input L voltage range
VIL
0
−
Operating temperature
Topr
−20
−
Output load
CL
−
−
Max. Unit
3.45
V
VDD
V
0.2VDD
V
+75
°C
15
pF
1/7