7
ICS98ULPA877A
1177F—12/10/09
Notes:
1. Switching characteristics guaranteed for application frequency range.
2. Static phase offset shifted by design.
Switching Characteristics
1
Commercial: TA = 0°C - 70°C; Industrial: TA = -40°C - +85°C;
Supply Volta
g
e AVDDQ, VDDQ = 1.8 V +/- 0.1V (unless otherwise stated)
PARAMETER
SYMBOL
CONDITION (MHz)
MIN TYP MAX UNITS
Output enable time
t
en
OE to any output 4.73 8 ns
Output disable time
t
dis
OE to any output 5.82 8 ns
160 to 270 -40 40
p
s
271 to 410 -30 30
p
s
160 to 270 -60 60
p
s
271 to 410 -50 50
p
s
In
p
ut Clock 1 2.5 4 v/ns
Output Enable (OE), (OS) 0.5 v/ns
Output clock slew rate
SLr1
(
o
)
1.5 2.5 3 v/ns
t
j
it
(
cc+
)
040ps
t
j
it
(
cc-
)
0-40ps
160 to 270 -50 50
p
s
271 to 410 -20 20
p
s
Static Phase Offset
t
SPO
2
271 to 410 -50 0 50 ps
t
jit (per)
+
t
(Ø)dyn +
t
skew(o)
(su)
80 ps
t
(
Ø
)
d
y
n
+
t
skew
(
o
)
t
(
h
)
60 ps
160 to 270 40 ps
271 to 410 30
p
s
SSC modulation fre
q
uenc
y
30.00 33 kHz
SSC clock input frequency
deviation
0.00 -0.50 %
PLL Loop bandwidth (-3 dB
from unity gain)
2.0 MHz
160 to 410
Period jitter
t
jit (per)
Input slew rate
SLr1(i)
160 to 410
Cycle-to-cycle period jitter
t
(Ø)dyn
Half-period jitter
t
jit(hper)
Output to Output Skew
t
skew
Dynamic Phase Offset
8
ICS98ULPA877A
1177F—12/10/09
VDD
GND
ICS98ULPA877A
V(CLK)
V(CLK)
VDD/2
VDD/2
ICS98ULPA877A
R=10
Z=60
Z=60
C = 10pF
C = 10pF
Z=50
Z=50
R=1M
R=10
L = 2.97"
L = 2.97"
VTT
VTT
Note: VTT =GND
C=1pF
R=1M
C=1pF
SCOPE
GND
Z=120
GND
Yx, FB_OUTC
Yx, FB_OUTT
tC(N)
tC(N + 1)
tJIT(CC) =tC(N) +tC(N + 1)
Figure 1: IBIS Model Output Load
Figure 2: Output Load Test Circuit
Figure 3: Cycle-to-Cycle Jitter
Parameter Measurement Information
9
ICS98ULPA877A
1177F—12/10/09
Figure 4: Static Phase Offset
Figure 5: Output Skew
Figure 6: Period Jitter
CLK_INC
CLK_INT
CLK_INC
CLK_INT
t( )n
t( )n+1
t( )=
n=N
1
t( )n
N
Yx#
Yx
Yx, FB_OUTC
Yx, FB_OUTT
t
SKEW
Yx, FB_OUTC
Yx, FB_OUTT
Yx, FB_OUTC
Yx, FB_OUTT
t
C(n)
1
fo
t(JIT_PER) =tC(n) -
1
fo
Parameter Measurement Information

98ULPA877AKLF

Mfr. #:
Manufacturer:
IDT
Description:
Clock Drivers & Distribution Low Power 1.8V DDR-I I PLL Clock Driver
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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