Page 1
EDGE HIGH-PERFORMANCE PRODUCTS
Edge118
Low Skew
Clock Spreader
Description
The Edge118 is a fully differential 1:18 clock spreader.
Manufactured in a high performance bipolar process,
the Edge118 is designed to accurately fan out a multitude
of clock signals with low channel to channel skew.
Functional Block Diagram
OUT / OUT* 0
OUT / OUT* 1
OUT / OUT* 2
Features
• Low Timing Error vs. Duty Cycle & Frequency
• Low Channel to Channel Skew
• Small Footprint (64 MQFP Package,
14 mm X 14 mm Body)
Applications
• Test Equipment
IN / IN*
OUT / OUT* 3
OUT / OUT* 4
OUT / OUT* 5
OUT / OUT* 6
OUT / OUT* 7
OUT / OUT* 8
OUT / OUT* 9
OUT / OUT* 10
OUT / OUT* 11
OUT / OUT* 12
OUT / OUT* 13
OUT / OUT* 14
OUT / OUT* 15
Revision 1/August 15, 2000
OUT / OUT* 16
OUT / OUT* 17
1
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EDGE HIGH-PERFORMANCE PRODUCTS
PIN Description
emaNniP#niPnoitpircseD
*NI,NI8,6.langistupnilaitnereffiD
Edge118
*0TUO,0TUO
*1TUO,1TUO
*2TUO,2TUO
*3TUO,3TUO
*4TUO,4TUO
*5TUO,5TUO
*6TUO,6TUO
*7TUO,7TUO
*8TUO,8TUO
*9TUO,9TUO
*01TUO,01TUO
*11TUO,11TUO
*21TUO,21TUO
*31TUO,31TUO
*41TUO,41TUO
*51TUO,51TUO
*61TUO,61TUO
*71TUO,71TUO
seilppuSrewoP
DNG,12,81,41,11,7,2
3,1
16,36
06,85
55,75
45,25
94,15
74,54
24,44
14,93
63,83
53,33
92,13
82,62
32,52
22,02
71,91
51,31
01,21
ylppuSrewoPevitisoP
,73,43,03,72,42
,35,05,64,34,04
26,95,65
.slangistuptuoLCElaitnereffiD
EEV46,84,23,61,9ylppuSrewoPevitageN
NDT,PDT5,4snoitcennoCedoiDlamrehT
2 2000 Semtech Corp.
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EDGE HIGH-PERFORMANCE PRODUCTS
PIN Description (continued)
VEE
OUT1
GND
OUT1*
OUT2*
GND
OUT2
OUT3
GND
OUT3*
OUT4*
GND
OUT4
OUT5
GND
OUT5*
Edge118
OUT0
GND
OUT0*
TDP
TDN
IN
GND
IN*
VEE
OUT17*
GND
OUT17
OUT16
GND
OUT16*
VEE
64
1
17
49
33
VEE
OUT6*
GND
OUT6
OUT7
GND
OUT7*
OUT8*
GND
OUT8
OUT9
GND
OUT9*
OUT10*
GND
OUT10
2000 Semtech Corp.
GND
OUT15*
OUT15
OUT14
GND
OUT14*
GND
OUT13*
OUT13
OUT12
3
GND
OUT12*
GND
OUT11*
VEE
OUT11
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Page 4
EDGE HIGH-PERFORMANCE PRODUCTS
Circuit Description
Chip Overview
The Edge118 is a clock distribution chip designed to
take one input signal (IN / IN*) and fan it out 18 times
to identical outputs (OUT / OUT*). The chip is designed
to minimize channel to channel skew and any timing jitter.
The part’s wide fanout is extremely useful in applications
where many distinct copies of a signal are required on
one PC Board, and these signals must all be aligned.
This signal can be distributed without creating a
distribution tree using multiple devices.
Edge118
OUT 0
OUT 0*
OUT 1
OUT 1*
OUT 2
OUT 2*
OUT 3
OUT 3*
OUT 4
OUT 4*
Inputs
The input signal is differential, requiring 250 mV swings
for full performance operation. The inputs are ECL
compatible, but may also be operated over a common
mode voltage range between VEE + 1.3V and VCC – .5V.
Outputs
The outputs are ECL compatible differential signals with
800 mV voltage swings centered around 1.3V below GND.
Operating Frequency
The Edge118 is designed to maintain full performance
up to at least 1000 MHz and pass 500 ps pulses.
IN
IN*
OUT 5
OUT 5*
OUT 6
OUT 6*
OUT 7
OUT 7*
OUT 8
OUT 8*
OUT 9
OUT 9*
OUT 10
OUT 10*
OUT 11
OUT 11*
OUT 12
OUT 12*
OUT 13
OUT 13*
OUT 14
OUT 14*
OUT 15
OUT 15*
OUT 16
OUT 16*
OUT 17
OUT 17*
4 2000 Semtech Corp.
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EDGE HIGH-PERFORMANCE PRODUCTS
Application Information
Power Supplies Decoupling
A .1 µF or .01 µF capacitor (with excellent high frequency
characteristics, is recommended betw een GND and VEE.
In addition, solid GND and VEE planes are recommended
to provide a low inductance path for the power supply
currents.
Output Terminations
For optimal results, all output pairs (used or unused)
should be terminated, and terminated in the same
manner.
Edge118
Thermal Information
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ecnatsiseRlamrehT
)draoBCPaotderedlostrap,MFL003(
riAotnoitcnuJ
θ AJ
52~W/C˚
2000 Semtech Corp.
5
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Page 6
EDGE HIGH-PERFORMANCE PRODUCTS
5 7
52 7
D1
0.20 C A – B D
Z
D
4X
C
O
O
Package Information
Edge118
Top View
PIN Descriptions
4
D
D2
–A–
3
e
SEE DETAIL "A"
4X
0.25 C A – B D
Bottom View
6 2000 Semtech Corp.
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Page 7
EDGE HIGH-PERFORMANCE PRODUCTS
A2
A1
0.13
R. MIN.
0.40 MIN.
0 MIN.
˚
0 – 7
˚
C
C
0.13 / 0.30 R.
L
1.60 REF.
GAGE PLANE
0.10 S–
0.25
DETAIL "B"
CA
.niM.moN.xaMetoN
A28.200.3
1A01.051.052.0
2A55.276.257.2
D.CSB02.714
1D.CSB00.415
2D.CSB00.21
0Z.FER00.1
E.CSB02.714
1E.CSB00.415
2E.CSB00.21
EZ.FER00.1
L37.0880.30.1
N466
e.CSB08.0
b03.054.0
1b03.053.004.0
ccc61.0
Package Information (continued)
e/2
Edge118
–A, B, D–
DETAIL "A"
12 – 16
˚
1.41 REF.
12 – 16
˚
Notes:
1. All dimensions and tolerances conform to ANSI Y14.5-1982.
2. Datum plane -H- located at mold parting line and coincident with lead,
where lead exits plastic body at bottom of parting line.
3. Datums A-B and -D- to be determined at centerline between leads where
leads exit plastic body at datum plane -H-.
4. To be determined at seating plane -C-.
5. Dimensions D1 and E1 do not include mold protrusion. Allowable mold
6. N” is the total # of terminals.
7. Package top dimensions are smaller than bottom dimensions by
8. Dimension b does not include dambar protrusion. Allowable dambar
9. All dimensions are in millimeters.
10. Maximum allowable die thickness to be assembled in this package family
11. This drawing conforms to JEDEC registered outlines MO-108 and
12. These dimensions apply to the flat section of the lead between 0.10 mm
2000 Semtech Corp.
protrusion is 0.254 mm per side. Dimensions D1 and E1 do
include mold mismatch and are determined at datum plane -H.-.
0.20 mm, and top of package will not overhang bottom of package.
protrusion shall be 0.08mm total in excess of the b dimension at
maximum material condition. Dambar cannot be located on the lower
radius or the foot.
is 0.635 millimeters.
MS-022.
and 0.25 mm from the lead tip.
3
SEE DETAIL "B"
A
H
C
2
0.076
SECTION C-C
12
0.13 / 0.23
7
ccc
M SS
8
b
b
1
A – B
WITH LEAD FINISH
0.13 / 0.17
BASE METAL
JEDEC Variation
All Dimensions in Millimeters
DC
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EDGE HIGH-PERFORMANCE PRODUCTS
Recommended Operating Conditions
retemaraPlobmySniMpyTxaMstinU
ylppuSrewoPgolanAevitisoPDNG000V
ylppuSrewoPgolanAevitageNEEV5.5– 2.4– V
erutarepmeTnoitcnuJJT521+C˚
Edge118
Absolute Maximum Ratings
retemaraPlobmySniMpyTxaMstinU
ylppuSrewoPgolanAlatoTEEV–DNG0.7– 0V
stupnIlatigiD*NI/NI5.–EEV5.+DNGV
erutarepmeTgnitarepOtneibmAAT521+C˚
erutarepmeTegarotS55– 051+C˚
erutarepmeTnoitcnuJJT56– 051+C˚
erutarepmeTgniredloS 062C˚
Stresses above listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any other conditions above
those listed in the operational sections of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
8 2000 Semtech Corp.
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Page 9
EDGE HIGH-PERFORMANCE PRODUCTS
DC Characteristics
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*NI/NI
Edge118
egatloVhgiHtupnI
egatloVwoLtupnI
tnerruCsaiBtupnI
egnaRedoMnommoCtupnI
*TUO/TUO
tnerruCtuptuO
egatloVhgiHtuptuO
egatloVwoLtuptuO
egnaRedoMnommoCtuptuO
tnerruCylppuS522572523Am
*NI–NI
NI–*NI
niI
*NI,NI
CDtuoI
*TUO–TUO
TUO–*TUO
*TUO–TUO
2
002
002
052–
3.1+EEV
006
006
5.1–
008
008
3.1– 1.1–
052
5.–DNG
Vm
Vm
Aµ
V
Vm
Vm
V
2000 Semtech Corp.
9
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Page 10
EDGE HIGH-PERFORMANCE PRODUCTS
AC Characteristics
retemaraPlobmySniMpyTxaMstinU
yaleDnoitagaporP
)5,1setoN(*TUO/TUOot*NI/NI
)6etoN(wekSlennahC-ot-lennahC
)4,3,2,1setoN(htdiWesluPmuminiMnimWP004005sp
)4,1setoN(semiTllaFdnaesiRtuptuO
05,%08-%02 Ω daoL
05,%09-%01 Ω daoL
)4,1setoN(rettiJ
kaeP-ot-kaeP 1.<1sp
∆ )4,1setoN(sn001=T,elcyCytuD.svdpT
%79=<elcyCytuD=<%0.3
%5.99=<elcyCytuD=<%5.0
Edge118
dpT054055
52<
)4,3,2,1setoN(ycneuqerFgnitarepOmumixaMxamF00010021>zHM
fT/rT
fT/rT
∆ dpT
∆ dpT
062
004
01<
52<
056
001
004
005
sp
sp
sp
sp
sp
sp
∆ )4,1setoN(ycneuqerF.svdpT
zHG0.1=<ycneuqerF=<zHM01
)4,1setoN(tneiciffeoCerutarepmeT
∆ dpT
∆ dpT
03<sp
1C˚/sp
Note 1: Measured in a terminated 50Ω transmission line environment.
Note 2: And still maintain 80% amplitude.
Note 3: And still maintain a propagation delay variation (measured at the differential crossing points) of
TPD ± 30 ps.
Note 4: This parameter is guaranteed by characterization. It is not production tested against the
specification limit.
Note 5: This parameter is guaranteed by design and characterization. It is production tested against
tester limits of Tpd = 550 ps ± 200 ps.
Note 6: This parameter is guaranteed by design and characterization. It is production tested against
a tester limit of 160 ps.
10 2000 Semtech Corp.
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EDGE HIGH-PERFORMANCE PRODUCTS
Ordering Information
rebmuNledoMegakcaP
FHA811E
811DmroFeiD
FHA811MVEeludoMnoitaulavE811egdE
Edge118
PFQMnip-46
ydoBmm41xmm41
redaerpSlanretnI/w
Contact Information
2000 Semtech Corp.
Semtech Corporation
Edge High-Performance Division
10021 Willow Creek Rd., San Diego, CA 92131
Phone: (858)695-1808 FAX (858)695-2633
11
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