PI6C2972 Ver la hoja de datos (PDF) - Pericom Semiconductor
Número de pieza
componentes Descripción
Fabricante
PI6C2972 Datasheet PDF : 7 Pages
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PI6C2972
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PLL Input Reference Characteristic (TA = 0°C to 70°C)
Symbol
Conditions
Characteristics
Min.
Max.
Units
tr, tf
TCLK Input Rise/Falls
3.0
ns
fref
Note 5
Reference Input Frequency
Note 5
100, Note 5
MHz
frefDC
Reference Input Duty Cycle
25
75
%
txtal
Crystal Oscillator Frequency
10
25
MHz
Notes:
5. Maximum input reference frequency is limited by the VCO lock range and the feedback divider or 100 MHz,
minimum input reference frequency is limited by the VCO lock range and the feedback divider.
AC Characteristics (TA = 0°C to 70°C, VCC = 3.3V ± 5%)
Symbol
Characteristics
Conditions
tr, tf
Output Rise/Fall Time (Note7)
0.8 to 2.0V
tpw
Output Duty Cycle (Note7)
tpd
tos
fVCO
fmax
tjitter
tPLZ, tPHZ
tPZL,tPZH
tlock
fMAX
Propagation Delay
Notes 7, 8, QFB = ÷8
Output-to-Output Skew
VCO Lock Range
Maximum Output Frequency Q (÷2)
Q (÷4)
Q (÷6)
Q (÷8)
Cycle–to–Cycle Jitter (Peak–to–Peak)
Output Disable Time
Output ENable TIme
Maximum PLL Lock Time
Maximum Frz_Clk Frequency
TCLK0
TCLK1
Note 7
Note 7
Min.
0.15
tCYCLE/2
–750
–270
–330
200
2
2
Typ.
tCYCLE/2
±500
130
70
±100
Max.
1.2
tCYCLE/2
+750
530
470
550
480
125
120
80
60
8
10
10
20
Units
ns
ps
MHz
ps
ns
ms
MHz
Notes:
7. 50 Ohm transmission line terminated into VCC/2
8. tpd is specified for a 50 MHz input reference. The window will shrink/grow proportionally from the minimum limit with shorter/
longer input reference periods. The tpd does not include jitter.
6
PS8590C 09/22/04
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