BU2374FV Datasheet, PDF (6/8 Pages) Rohm – VCO + phase comparator IC for PLL system

Multimedia ICs
BU2374FV
(Unless otherwise noted,Ta=25°C, VCC=3.3V)
Parameter
PFD section
PFD_OUT Output H voltage
PFD_OUT Output L voltage
input current
(PFD_INHIBIT, FIN A, FIN B)
Symbol
Min.
Typ.
Max.
Unit
Conditions
VOH
3.0
−
−
V
IOH=−2.0mA
VOL
−
−
0.3
V
IOL=2.0mA
IIH, IIL
−
−
−+¹
µA
at VCO_INHIBIT=VDD
PFD current consumption (inhibit)
IDD(INH)
−
−
1
µA PFD_INHIBIT=VDD
FIN_A and B=GND
PFD current consumption
(normal operation)
IDD(vco)
−
0.5
−
mA FIN_A and FIN_B=1MHz
PFD Function
−
−
−
−
−
∗4
∗4
FIN-A
FIN-B
PD OUT
Even if Fin-A and Fin-B are same phase,
PD out is off about 2.5nsec. (VDD=3.0V)
PD OUT
Output time [nsec]
2.5nsec
2.5nsec
L output (N-MOS Tr)
H output (P-MOS Tr)
Phase error [nsec]
(between Fin-A positive edge
and Fin-B positive edge)
Input pin (FIN_A, FIN_B, VCO_INHIBIT, PFD_INHIBIT, SELECT)
0.2VDD
Vhys
0.8VDD
VthL ^1/2VDD VthH Input (V)
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