PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER GENERAL DESCRIPTION FEATURES The ICS840001-32 is a two output LVCMOS/ LVTTL Synthesizer and is a member of the HiPerClockS™ HiPerClocks TM family of high perfor mance devices from ICS. The device uses a 40MHz crystal to provide a 40MHz reference clock output and to synthesize a 100MHz or 106.25MHz output. The ICS840001-32 has excellent <1ps phase jitter performance over the 637kHz – 5MHz integration range. The ICS840001-32 is packaged in a 3mm x 3mm 16-pin VFQFN, making it ideal for use on space constrained boards. • One LVCMOS/LVTTL output, 15Ω typical output impedence and one reference clock output ICS • 40MHz, 10pF parallel resonant crystal • Output frequencies: 100MHz or 106.25MHz • RMS phase jitter @ 106.25MHz, using a 40MHz crystal (637kHz - 5MHz): 0.78ps (typical) • 3.3V operating supply • 0°C to 70°C ambient operating temperature • Availabe in both standard and lead-free RoHS-compliant packages FUNCTION TABLE SEL Input 1 106.25 40 REF_OUT Synthesizer Q XTAL_OUT SEL (Pullup) 16 15 14 13 12 XTAL_OUT 2 11 VDDO_Q XTAL_IN 3 10 VDD SEL 4 9 5 6 7 8 GND OSC VDD 1 VDDO_REF_OUT XTAL_IN 100MHz or 106.25MHz GND 40MHz nc VDDA PIN ASSIGNMENT nc BLOCK DIAGRAM nc 40 0 Outputs Q Output REF_OUT Frequency (MHz) Frequency (MHz) 100 40 GND Inputs Crystal Frequency (MHz) 40 Q REF_OUT ICS840001-32 16-Lead VFQFN 3mm x 3mm x 0.95 package body K Package Top View The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice. 840001CK-32 www.icst.com/products/hiperclocks.html REV. A NOVEMBER 23, 2005 1 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER TABLE 1. PIN DESCRIPTIONS Number Name 1, 10 Power 4 VDD XTAL_OUT, XTAL_IN SEL 5, 8, 13 GND Power 6, 14, 15 nc Unused 7 VDDO_REF_OUT Power 9 REF_OUT Output 11 VDDO_Q Power 12 Q Output 16 VDDA Power 2, 3 Type Description Input Input Pullup Core supply pin. Crystal oscillator interface. XTAL_IN is the input. XTAL_OUT is the output. Select input. LVCMOS/LVTTL interface levels. Power supply ground. No connect. Output supply pin for REF_OUT output Single-ended three-state reference clock output. LVCMOS/LVTTL interface levels. 15Ω typical output impedance. Output supply pin for Q output. Single-ended clock output. LVCMOS/LVTTL interface levels. 15Ω typical output impedance. Analog supply pin. NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values. TABLE 2. PIN CHARACTERISTICS Symbol Parameter CIN Input Capacitance CPD Power Dissipation Capacitance RPULLUP ROUT 840001CK-32 Test Conditions Minimum Typical Maximum Units 4 pF 8 pF Input Pullup Resistor 51 kΩ Output Impedance 15 Ω VDD, VDDA, VDDO_REF_OUT, VDDO_Q = 3.465V www.icst.com/products/hiperclocks.html 2 REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER 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 51.5°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 beyond those listed in the DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDA = VDDO_REF_OUT = VDDO_Q = 3.3V±5%, TA = 0°C TO 70°C Symbol Parameter VDD VDDA Test Conditions Minimum Typical Maximum Units Core Supply Voltage 3.135 3.3 3.465 V Analog Supply Voltage 3.135 3.3 3.465 V 3.135 3.3 3.465 VDDO Output Supply Voltage IDD Power Supply Current 70 mA IDDA Analog Supply Current 25 mA IDDO Output Supply Current 12 mA V TABLE 3B. LVCMOS/LVTTL DC CHARACTERISTICS, VDD = VDDA = VDDO_REF_OUT = VDDO_Q = 3.3V±5%, TA = 0°C TO 70°C Symbol Parameter VIH Input High Voltage Test Conditions VIL Input Low Voltage IIH Input High Current VDD = VIN = 3.465V IIL Input Low Current VDD = 3.465V, VIN = 0V VOH Output High Voltage; NOTE 1 Minimum Typical Maximum Units 2 VDD + 0.3 V -0.3 0.8 V 5 µA -150 µA 2.6 V Output Low Voltage; NOTE 1 VOL NOTE 1: Outputs terminated with 50Ω to VDDO_x/2 See Parameter Measurement Information Section, "3.3V Output Load Test Circuit". 0.5 V Maximum Units TABLE 4. CRYSTAL CHARACTERISTICS Parameter Test Conditions Minimum Mode of Oscillation Typical Fundamental Frequency 40 Equivalent Series Resistance (ESR) 50 Shunt Capacitance Drive Level 840001CK-32 MHz 10 www.icst.com/products/hiperclocks.html 3 Ω 7 pF 100 µW REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER TABLE 5. AC CHARACTERISTICS, VDD = VDDA = VDDO_REF_OUT = VDDO_Q = 3.3V±5%, TA = 0°C TO 70°C Symbol Parameter Test Conditions REF_OUT fOUT Output Frequency t jit(Ø) RMS Phase Jitter (Random) t R / tF Q Output Rise/Fall Time Minimum Maximum Units 100 MHz f_SEL = 1 100MHz, Integration Range: 637kHz to 5MHz 106.25MHz, Integration Range: 637kHz to 5MHz 20% to 80% 106.25 MHz 0.83 ps 0.78 ps 90 0 ps 50 % odc Output Duty Cycle All parameters are characterized @ 100MHz and 106.25MHz. 840001CK-32 Typical f_SEL = 0 www.icst.com/products/hiperclocks.html 4 REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER TYPICAL PHASE NOISE AT 106.25MHZ 0 Fibre Channel Filter ➤ -60 -70 106.25MHz Raw Phase Noise Data -80 -90 -100 RMS Phase Jitter (Random) 637kHz to 5MHz = 0.78ps (typical) ➤ NOISE POWER dBc Hz -10 -20 -30 -40 -50 -110 -120 -130 -140 -150 ➤ -160 -170 -180 -190 -200 Phase Noise Result by adding Fibre Channel Filter to raw data 10 100 1k 10k 100k 1M OFFSET FREQUENCY (HZ) 840001CK-32 www.icst.com/products/hiperclocks.html 5 REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER PARAMETER MEASUREMENT INFORMATION 1.65V ± 5% Noise Power Phase Noise Plot SCOPE VDD, VDDA, VDDO_X Qx LVCMOS Phase Noise Mask GND Offset Frequency f1 -1.65V ± 5% f2 RMS Jitter = Area Under the Masked Phase Noise Plot 3.3V OUTPUT LOAD AC TEST CIRCUIT RMS PHASE JITTER V DDOX 80% 2 Q 80% t PW t odc = Clock Outputs PERIOD t PW 20% 20% tR tF x 100% t PERIOD OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD 840001CK-32 OUTPUT RISE/FALL TIME www.icst.com/products/hiperclocks.html 6 REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER APPLICATION INFORMATION POWER SUPPLY FILTERING TECHNIQUES As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. The ICS840001-32 provides separate power supplies to isolate any high switching noise from the outputs to the internal PLL. VDD, VDDA and VDDO_X should be individually connected to the power supply plane through vias, and bypass capacitors should be used for each pin. To achieve optimum jitter performance, power supply isolation is required. Figure 1 illustrates how a 10Ω resistor along with a 10μF and a .01μF bypass capacitor should be connected to each VDDA pin. The 10Ω resistor can also be replaced by a ferrite bead. 3.3V VDD .01μF 10Ω V DDA .01μF 10μF FIGURE 1. POWER SUPPLY FILTERING CRYSTAL INPUT INTERFACE parallel resonant crystal and were chosen to minimize the ppm error. The optimum C1 and C2 values can be slightly adjusted for different board layouts. The ICS840001-32 has been characterized with 10pF parallel resonant crystals. The capacitor values, C1 and C2, shown in Figure 2 below were determined using a 40MHz, 10pF XTAL_IN C1 X1 Crystal XTAL_OUT C2 Figure 2. CRYSTAL INPUt INTERFACE 840001CK-32 www.icst.com/products/hiperclocks.html 7 REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER RELIABILITY INFORMATION TABLE 7. θJAVS. AIR FLOW TABLE FOR 16 LEAD VFQFN θJA vs. 0 Air Flow (Linear Feet per Minute) 0 Multi-Layer PCB, JEDEC Standard Test Boards 51.5°C/W TRANSISTOR COUNT The transistor count for ICS840001-32 is: 2121 840001CK-32 www.icst.com/products/hiperclocks.html 8 REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. PACKAGE OUTLINE - K SUFFIX FOR ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER 16 LEAD VFQFN TABLE 8. PACKAGE DIMENSIONS JEDEC VARIATION ALL DIMENSIONS IN MILLIMETERS SYMBOL MINIMUM MAXIMUM 16 N A 0.80 1.0 A1 0 0.05 0.25 Reference A3 b 0.18 0.30 e 0.50 BASIC ND 4 NE 4 3.0 D D2 0.25 1.25 3.0 E E2 0.25 1.25 L 0.30 0.50 Reference Document: JEDEC Publication 95, MO-220 840001CK-32 www.icst.com/products/hiperclocks.html 9 REV. A NOVEMBER 23, 2005 PRELIMINARY Integrated Circuit Systems, Inc. ICS840001-32 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER TABLE 9. ORDERING INFORMATION Part/Order Number Marking Package Shipping Packaging Temperature ICS840001CK-32 1C32 16 Lead VFQFN tray 0°C to 70°C ICS840001CK-32T 1C32 16 Lead VFQFN 2500 tape & reel 0°C to 70°C ICS840001CK-32LF TB D 16 Lead "Lead-Free" VFQFN tray 0°C to 70°C ICS840001CK-32LFT TBD 16 Lead "Lead-Free" VFQFN 2500 tape & reel 0°C to 70°C NOTE: Par ts that are ordered with an "LF" suffix to the par t number are the Pb-Free configuration and are RoHS complaint. The aforementioned trademarks, HiPerClockS and FemtoClocks are trademarks of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability or other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. 840001CK-32 www.icst.com/products/hiperclocks.html 10 REV. A NOVEMBER 23, 2005