40002A01

ICS840002-01 ICST | Alldatasheet

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Technical content

Systems, Inc. 840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006 ICS840002-01 FEMTOCLOCKS™ CRYSTAL-TO- LVCMOS/LVTTL FREQUENCY SYNTHESIZER GENERAL DESCRIPTION The ICS840002-01 is a 2 output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies and is a member of the HiPerClocksTM family of high performance clock solutions from ICS. Using a 25MHz 18pF 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’ 3rd generation low phase noise VCO technology and can 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. HiPerClockS™ ICS BLOCK DIAGRAM PIN ASSIGNMENT F_SEL0 nXTAL_SEL TEST_CLK OE MR nPLL_SEL VDDA VDD F_SEL1 GND GND VDDO XTAL_IN XTAL_OUT ICS840002-01 16-Lead TSSOP 4.4mm x 5.0mm x 0.92mm package body G Package Top View

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
• 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 OE F_SEL1:0 nPLL_SEL nXTAL_SEL XTAL_IN XTAL_OUT TEST_CLK MR OSC Phase Detector VCO M = ÷25 (fixed) F_SEL1:0 0 0 ÷4 0 1 ÷5 1 0 ÷10 1 1 ÷5 N 25MHz Pullup Pulldown Pulldown Pulldown Pullup:Pullup Pulldown FREQUENCY SELECT FUNCTION TABLE s t u p n I y c n e u q e r F t u p t u O ).f e R z H M L E S F L E S F e u l a V r e d i v i D M e u l a V r e d i v i D N

TABLE 1. PIN DESCRIPTIONS TABLE 2. PIN CHARACTERISTICS

Systems, Inc. 840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006 ICS840002-01 FEMTOCLOCKS™ CRYSTAL-TO- LVCMOS/LVTTL FREQUENCY SYNTHESIZER TABLE 3B. LVCMOS/LVTTL DC CHARACTERISTICS, VDD = VDDA = 3.3V±5%, VDDO = 3.3V±5% OR 2.5V±5%, TA = -30°C TO 85°C ABSOLUTE MAXIMUM RATINGS Supply Voltage, VDD 4.6V Inputs, VI -0.5V to VDD + 0.5 V Outputs, VO -0.5V to VDDO + 0.5V Package Thermal Impedance, θJA 89°C/W (0 lfpm) Storage Temperature, TSTG -65°C to 150°C 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. l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V H I e g a tlo V h gi H t u p n I V D D V V L I e g a tlo V w o L t u p n I V I H I t u p n I t n e rr u C h gi H L E S F L E S F E O V D D V N I V V r o A µ R M L E S L L P n K L C T S E T L E S L A T X n V D D V N I V V r o A µ I L I t u p n I t n e rr u C w o L L E S F L E S F E O V D D V r o V V N I V A µ R M L E S L L P n K L C T S E T L E S L A T X n V D D V r o V V N I V A µ V H O E T O N e g a tlo V h gi H t u p t u O V O D D V V V O D D V V V L O E T O N e g a tlo V w o L t u p t u O V O D D V r o V V h ti w d e t a ni m r e t st u p t u O E T O N Ω V o t O D D .stiu c ri C ts e T d a o L t u p t u O n oit a m r o f n I t n e m e r u s a e M r e t e m a r a P e e S TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDA = 3.3V±5%, VDDO = 3.3V±5% OR 2.5V±5%, TA = 0°C TO 70°C l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V D D e g a tlo V ylp p u S e r o C V V A D D e g a tlo V ylp p u S g ola n A V V O D D e g a tlo V ylp p u S t u p t u O V V I D D t n e rr u C ylp p u S r e w o P A m I A D D t n e rr u C ylp p u S g ola n A A m I O D D t n e rr u C ylp p u S t u p t u O A m

TABLE 4. CRYSTAL CHARACTERISTICS

Systems, Inc. 840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006 ICS840002-01 FEMTOCLOCKS™ CRYSTAL-TO- LVCMOS/LVTTL FREQUENCY SYNTHESIZER TYPICAL PHASE NOISE AT 62.5MHZ @3.3V -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 -190 62.5MHz RMS Phase Jitter (Random) 1.875MHz to 20MHz = 0.51ps (typical) OFFSET FREQUENCY (HZ) NOISE POWER dBc Hz Phase Noise Result by adding 1Gb Ethernet Filter to raw data Raw Phase Noise Data 1Gb Ethernet Filter 100 10k 100k 10M 100M TYPICAL PHASE NOISE AT 156.25MHZ @3.3V -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 -190 156.25MHz RMS Phase Jitter (Random) 1.875MHz to 20MHz = 0.47ps (typical) OFFSET FREQUENCY (HZ) NOISE POWER dBc Hz Phase Noise Result by adding 10Gb Ethernet Filter to raw data Raw Phase Noise Data 10Gb Ethernet Filter 100 10k 100k 10M 100M

Systems, Inc. 840002AG-01 www.icst.com/products/hiperclocks.html REV. B JANUARY 13, 2006 ICS840002-01 FEMTOCLOCKS™ CRYSTAL-TO- LVCMOS/LVTTL FREQUENCY SYNTHESIZER PARAMETER MEASUREMENT INFORMATION tPERIOD tPW tPERIOD odc = VDDO x 100% tPW Q0, Q1 RMS PHASE JITTER 3.3V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT 3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT SCOPE Qx LVCMOS 1.65V±5% -1.65V±5% OUTPUT SKEW Clock Outputs 20% 80% 80% 20% tR tF VDD, VDDA, VDDO GND Phase Noise Mask Offset Frequency Phase Noise Plot RMS Jitter = Area Under the Masked Phase Noise Plot Noise Power tsk(o) VDDO VDDO Qx Qy OUTPUT RISE/FALL TIME SCOPE Qx LVCMOS 2.05V±5% -1.25V±5% VDD, VDDA GND OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD 1.25V±5% VDDO

TABLE 6. θJAVS. AIR FLOW TABLE FOR 16 LEAD TSSOP NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.

TABLE 7. PACKAGE DIMENSIONS

TABLE 8. ORDERING INFORMATION product for use in life support devices or critical medical instruments. The aforementioned trademarks, HiPerClockS and FEMTOCLOCKS are trademarks of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries.

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