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ICS840002-01
User Manual
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ICSI ICS840002-01 User Manual

Integrated Circuit Systems, Inc.
ICS840002-01
FEMTOCLOCKS™ C RYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
ICS
HiPerClockS™
parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL1:0):
156.25MHz, 125MHz, and 62.5MHz. The ICS840002-01 uses ICS’ 3 achieve 1ps or lower typical random rms phase jitter, easily meeting Ethernet jitter requirements. The ICS840002-01 is packaged in a small 16-pin TSSOP package.

FREQUENCY SELECT FUNCTION TABLE

00 524 52.651
01 525 521
10 52015.26
11 525 521
The ICS840002-01 is a 2 output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies and is a member of
TM
the HiPerClocks
family of high performance
clock solutions from ICS. Using a 25MHz 18pF
rd
generation low phase noise VCO technology and can
stupnI
1LES_F0LES_FeulaVrediviDMeulaVrediviDN

FEATURES

• Two LVCMOS/LVTTL outputs @ 3.3V, 17Ω typical output impedance
• Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input
• Output frequency range: 56MHz - 175MHz
• VCO range: 560MHz - 700MHz
• Output skew: 12ps (maximum)
• RMS phase jitter at 156.25MHZ (1.875MHz - 20MHz):
0.47ps (typical)
Phase noise:
Offset Noise Power
100Hz ............... -97.4 dBc/Hz
1kHz .............. -120.2 dBc/Hz
10kHz .............. -127.6 dBc/Hz
100kHz ..............-126.1 dBc/Hz
• Full 3.3V or 3.3V core/2.5V output supply mode
• -30°C to 85°C ambient operating temperature
• Available in both standard and lead-free RoHS compliant packages
ycneuqerFtuptuO
).feRzHM52(
BLOCK DIAGRAM PIN ASSIGNMENT
Pullup
OE
Phase
2
M = ÷25 (fixed)
VCO
1
F_SEL1:0
N
0 0 ÷4
0 1 ÷5
1 0 ÷10
1 1 ÷5
1
0
Q0
Q1
F_SEL1:0
nPLL_SEL
nXTAL_SEL
XTAL_IN
XTAL_OUT
TEST_CLK
840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006
Pullup:Pullup
Pulldown
Pulldown
Pulldown
Pulldown
MR
25MHz
OSC
0
1
Detector
F_SEL0
nXTAL_SEL
TEST_CLK
nPLL_SEL
4.4mm x 5.0mm x 0.92mm
1
16 15 14 13 12 11 10
9
F_SEL1 GND GND Q0 Q1 V XTAL_IN XTAL_OUT
V
OE
MR
DDA
VDD
2 3 4 5 6 7 8
ICS840002-01
16-Lead TSSOP
package body
G Package
Top View
DDO
Integrated Circuit
FEMTOCLOCKS™ C RYSTAL-TO-
Systems, Inc.
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
TABLE 1. PIN DESCRIPTIONS
rebmuNemaNepyTnoitpircseD
10LES_FtupnIpulluP.slevelecafretniLTTVL/SOMCVL.niptcelesycneuqerF
2LES_LATXntupnInwodll
3KLC_TSETtupnInwodlluP.tupnikcolcLTTVL/SOMCVLdedne-elgniS
4EOtup
5RMtupnInwodlluP
6LES_LLPntupnInwodlluP
7V
8V
,9
01
11V
31,210Q,1QtuptuO .slevelecafretniLTTVL/SOMCVL.stuptuokcolcdedne-elgniS
51,41DNGrewoP.dnu
611LES_FtupnIpulluP.slevelecafretniLTTVL/SOMCVL.niptcelesycneuqerF
:ETON pulluP dna nwodlluP .se
ADD
DD
NI_LATX
ODD
nIpulluP
,TUO_LATX
uP
rewoP.nipylppusgolanA
rewoP.nipylppuseroC
tupnI
rewoP.nipylppustuptuO
.slevelecafretniLTTVL/SOMCVL.stupni
depmihgihanierastuptuo
sredivid
dessapybsiLLPeht,HGIHnehW
.slevelecafretniLTTVL/SOMCVL
NI_LATX
.tupniehtsi
orgylppusrewoP
ICS840002-01
ecnereferLLPehtsastupniKLC_TSETrolatsyrcehtneewtebstceleS
LATXstceles,WOLnehW.KLC_TSETstceles,HGIHnehW.ecruos
eht,WOLnehW.evitcaerastuptuoeht,HGIHnehW.nipelbanetuptuO
erasredividlanretnieht,HGIHcigolnehW.teseRretsaMHGIHevitcA
eht,WOLcigolnehW.wologotstuptuoevitcagnisuacteser
.redividtuptuoN/ycneuqerfkcolcecnerefer
.tuptuoehtsiTUO_LATX.ecafretnirotallicsolatsyrC
ulavlacipytrof,scitsiretcarahCniP,2elbaTeeS.srotsisertupnilanretniotrefer
lanretni
.slevelecafretniLTTVL/SOMCVL.delbaneerastuptuoehtdna
.tuptuoOCVehtmorfnevirdsituptuoeht,WOLnehW.ssapyBLLP
=ycneuqerftuptuoehtdna
.slevelecafretniLTTVL/SOMCVL.etatsecna
TABLE 2. PIN CHARACTERISTICS
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
C
NI
C
DP
R
PULLUP
R
R
840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006
NWODLLUP
TUO
ecnaticapaCtupnI 4Fp
ecnaticapaCnoitapissiDrewoP 8Fp
rotsiseRpulluPtupnI 15kΩ
rotsiseRnwodlluPtupnI 15kΩ
ecnadepmItuptuO
%5±V3.3417112
%5±V5.2611252
2
Ω
Ω
Integrated Circuit Systems, Inc.

ABSOLUTE MAXIMUM RATINGS

ICS840002-01
FEMTOCLOCKS™ C RYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
Supply Voltage, V
Inputs, V
Outputs, V
I
O
DD
4.6V
-0.5V to V
-0.5V to V
+ 0.5 V
DD
DDO
+ 0.5V
Package Thermal Impedance, θJA 89°C/W (0 lfpm)
Storage Temperature, T
STG
TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, V
-65°C to 150°C
DD
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
V
ADD
V
ODD
I
DD
I
ADD
I
ODD
egatloVylppuSeroC 531.33.3564.3V
egatloVylppuSgolanA 531.33.3564.3V
egatloVylppuStuptuO
tnerruCylppuSrewoP 001Am
tnerruCylppuSgolanA 21Am
tnerruCylppuStuptuO 5Am
TABLE 3B. LVCMOS/LVTTL DC CHARACTERISTICS, V
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
HI
V
LI
I
HI
I
LI
V
HO
V
LO
tupnI
tupnI
egatloVhgiHtupnI 2V
egatloVwoLtupnI 3.0-8.0V
1LES_F,0LES_F,EO
tnerruChgiH
,RM,LES_LLPn
KLC_TSET,LES_LATXn
1LES_F,0LES_F,EO
tnerruCwoL
,RM,LES_LLPn
KLC_TSET,LES_LATXn
1ETON;egatloVhgiHtuptuO
1ETON;egatloVwoLtuptuOV
05htiwdetanimretstuptuO:1ETON Ω Vot
ODD
= V
DD
V
V
DDA
= V
V
V
DD
DD
V
ODD
NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions or any conditions be-
yond those listed in the DC Characteristics or AC Character- istics is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect product reliability.
= 3.3V±5%, V
= 3.3V±5% OR 2.5V±5%, TA = 0°C TO 70°C
DDO
531.33.3564.3V
573.25.2526.2V
= 3.3V±5%, V
DDA
V=
DD
NI
= 3.3V±5% OR 2.5V±5%, TA = -30°C TO 85°C
DDO
DD
V564.3=
V526.2ro
V=
DD
NI
V564.3=
V526.2ro
,V526.2roV564.3=
V
V0=
NI
,V526.2roV564.3=
V
V0=
NI
ODD
V
ODD
%5±V564.3=6.2V
%5±V5.2=8.1V
051-Aµ
5-Aµ
%5±V5.2roV3.3=5.0V
3.0+V
5Aµ
051Aµ
.stiucriCtseTdaoLtuptuO,noitamrofnItnemerusaeMretemaraPeeS.2/
840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006
3
Integrated Circuit Systems, Inc.
TABLE 4. CRYSTAL CHARACTERISTICS
retemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
noitallicsOfoedoM latnemadnuF
ycneuqerF 52zHM
eireStnelaviuqE 05
ecnaticapaCtnuhS 7Fp
leveLevirD 1Wm
ICS840002-01
FEMTOCLOCKS™ C RYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
)RSE(ecnatsiseRs
.latsyrctnanoserlellarapFp81nagnisudeziretcarahC:ETON
Ω
TABLE 5A. AC CHARACTERISTICS, V
DD
= V
DDA
= V
= 3.3V±5%, TA = -30°C TO 85°C
DDO
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
00=]0:1[LES_F041571zHM
f
TUO
ycneuqerFtuptuO
10=]0:1[LES_F211041zHM
11ro01=]0:1[LES_F6507zHM
t )o(ks3,1ETON;wekStuptuO 21sp
)zHM02-zHM578.1(zHM52.65174.0sp
t
t
Rt/F
)Ø(tij
2ETON
emiTllaF/esiRtuptuO%08ot%02002007sp
;)modnaR(rettiJesahPSMR
8.1(zHM5.2615.0sp
)zHM02-zHM578.1(zHM52175.0sp
)zHM02-zHM57
cdoelcyCytuDtuptuO 6445%
stuptuoneewtebwekssadenifeD:1ETON
.2/
VtaderusaeM
ODD
.tolPesioNesahPehtotreferesaelP:2ETON
.snoitidnocdaollauqehtiwdnasegatlovylppusemasehtta
.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:3ETON
TABLE 5B. AC CHARACTERISTICS, V
DD
= V
DDA
= 3.3V±5%, V
= 2.5V±5%, TA = -30°C TO 85°C
DDO
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
00=]0:1[LES_F041571zHM
f
TUO
ycneuqerFtuptuO
10=]0:1[LES_F211041zHM
11ro01=]0:1[LES_F6586zHM
t )o(ks3,1ETON;wekStuptuO 21sp
)zHM02-zHM578.1(zHM52.65174.0sp
t
t
Rt/F
)Ø(tij
2ETON
emiTllaF/esiRtuptuO%08ot%02002007sp
;)modnaR(rettiJesahPSMR
8.1(zHM5.2694.0sp
)zHM02-zHM578.1(zHM52155.0sp
)zHM02-zHM57
cdoelcyCytuDtuptuO 6445%
stuptuoneewtebwekssadenifeD:1ETON
.2/
VtaderusaeM
ODD
.tolPesioNesahPehtotreferesaelP:2ETON
.snoitidnocdaollauqehtiwdnasegatlovylppusemasehtta
.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:3ETON
840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006
4
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