Product Pin Configurat ion
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PI6C2501
Phase-Locked Loop Clock Driver
Product Feat ures
?High-Performance, Phase-Locked-Loop Clock Distribution ?Allows Clock Input to have Spread Spectrum modulation for EMI reduction ?Zero Input-to-Output delay
?Low jitter: Cycle-to-Cycle jitter ±100ps max.
?On-chip series damping resistor at clock output drivers for low noise and EMI reduction ?Operates at 3.3V V CC
?Wide range of Clock Frequencies up to 80 MHz ?Package: Plastic 8-pin SOIC (W)
Product Description
The PI6C2501 features a low-skew, low-jitter, phase-locked loop (PLL) clock driver. By connecting the CLK_OUT output to the feedback FB_IN input, the propagation delay from the CLK_IN input to CLK_OUT output will be nearly zero.
Application
If a system designer needs more than 16 outputs with the features just described, using two or more zero-delay buffers, such as the PI6C2509Q, or PI6C2510Q, is likely to be impractical. The device-to-device skew introduced can significantly reduce the performance. Pericom recommends using a zero-delay buffer and an eighteen output non-zero-delay buffer. As shown in Figure 1,this combination produces a zero-delay buffer with all the signal characteristics of the original zero-delay buffer, but with as many outputs as the non-zero-delay buffer part. For example, when combined with an eighteen output non-zero delay buffer, a system designer can create a seventeen-output zero-delay buffer.
Figure 1. This Combination Provides Zero-Delay Between
the Reference Clock Signal and 17 Outputs
123V CC
4
CLK_OUT
CLK_IN GND FB_IN
8765
AGND GND AV CC 8-Pin W
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PI6C2501
Phase-Locked Loop Clock Driver
l o b m y S r e t e m a r a P .n i M .x a M s t i n U V I e g n a r e g a t l o v t u p n I 5
.0-V C C 5.0+V V O e g n a r e g a t l o v t u p t u O I C D _O t
n e r r u c t u p t u o C D 001A m r e w o P T t a n o i t a p i s s i d r e w o p m u m i x a M A 55=o r i a l l i t s n i C 0.1W
T G
T S e
r u t a r e p m e t e g a r o t S 56 0
51o C
DC Specifications (Absolute maximum ratings over operating free-air temperature range)
r
e t e m a r a P s
n o i t i d n o C t s e T V C C .n i M .p y T .x a M s t i n U I C C V I V =C C I ;D N G r o O 0=)1(V 6.30
1μA C I V I V =C C D N G r o V
3.34F
p C O
V O V =C C D
N G r o 6
Note:
Stress beyond those listed under absolute maximum ratings may cause permanent damage to the device.
Recommended Operating Conditions
l o b m y S r e t e m a r a P .n i M .x a M s
t i n U V C C e g a t l o v y l p p u S 0.36.3V
V H I e g a t l o v t u p n i l e v e l h g i H 0
.2V L I e g a t l o v t u p n i l e v e l w o L 8
.0V I e
g a t l o v t u p n I 0V C C T A
e
r u t a r e p m e t r i a -e e r f g n i t a r e p O 0
7C
oPin Funct ions
e m a N n i P .o N n i P e p y T n
o i t p i r c s e D N I _K L C 8I .t u p n i k c o l C e c n e r e f e R N I _K L C .t u p n i k c o l c m u r t c e p s d a e r p s s w o l l a B F _N I 5I .t u p n i k c a b d e e F B F _N I .
L L P l a n r e t n i e h t o t l a n g i s k c a b d e e f e h t s e d i v o r p T U O _K L C 3O d e d d e b m e n a s a h t u p t u o e h T .N I _K L C f o y p o c w e k s -w o l a s e d i v o r p t u p t u o s i h T .t u p t u o k c o l C .
r o t s i s e r g n i p m a d -s e i r e s V A C C 7r e w o P V A .y l p p u s r e w o p g o l a n A C C V A n e h W .e s o p r u p t s e t r o f L L P e h t s s a p y b o t d e s u o s l a e b n a c C C .s t u p t u o e c i v e d e h t o t y l t c e r i d d e r e f f u b s i N I _K L C d n a d e s s a p y b s i L L P ,d n u o r g o t d e p p a r t s s i D N G A 1d n u o r G .y r t i u c r i c g o l a n a e h t r o f e c n e r e f e r d n u o r g e h t s e d i v o r p D N G A .d n u o r g g o l a n A V C C 4r e w o P .y l p p u s r e w o P D
N G 6
,2d
n u o r G .
d n u o r G Note:
1. Continuous Output Current
PI6C2501
Phase-Locked Loop Clock Driver
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l o b m y S r
e t e m a r a P .n i M .x a M s t i n U F K L C 1052C 6I P y c n e u q e r
f k c o l C 5208z H M D I
Y C e
l c y c y t u d k c o l c t u p n I 0
406%p
u r e w o p r e t f a e m i T n o i t a z i l i b a t S 1
s
m AC Specifications
(Timing requirements over recommended ranges of supply voltage and operating free-air temperature)
r
e t e m a r a P )
t u p n I (m o r F )t u p t u O (o T V C C C °07-0,V 3.0±V 3.3=s t i n U .n i M .
p y T .x a M r e t t i j t u o h t i w r o r r e e s a h p t N I _K L C ↑z H M 66&001t a N I _B F ↑
051 051+s p e l c y c -o t -e l c y c ,r e t t i J z
H M 66&001t A T
U O _K L C 001 001+e
l c y c y t u D 5
45
5%V 0.2o t V 4.0,e m i t -e s i r ,r t 0.1s
n V
4.0o t V 0.2,e m i t -l l a f ,f t 1.1Swit ching Charact erist ics
(Over recommended ranges of supply voltage and operating free-air temperature, CL = 30pF)
Note:
These switching parameters are guaranteed by design.
Electrical Characteristics (Over Recommended Operating Free-Air Temperature Range
Pull Up/Down Currents of PI6C2501, V CC = 3.0V)
l o b m y S r
e t e m a r a P n o i t i d n o C .n i M .x a M s
t i n U I H
O t n e r r u c p u -l l u P V 4.2=t u o V 81-A
m t n e r r u c p u -l l u P V 0.2=t u o V 0
3-I L
O t n e r r u c n w o d -l l u P V 8.0=t u o V 52t
n e r r u c n w o d -l l u P V
55.0=t u o V 7
1
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PI6C2501
Phase-Locked Loop Clock Driver
e d o C g n i r e d r O e
m a N e g a k c a P e p y T e g a k c a P e g n a R g n i t a r e p O W
1052C 6I P 8
W C
I O S l i m -051n i p -8l
a i c r e m m o C Ordering Information
Pericom Semiconductor Corporation
2380 Bering Drive ?San Jose, CA 95131 ? 1-800-435-2336?Fax (408) 435-1100 ?https://www.doczj.com/doc/4e15701806.html,