CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 D Phase-Locked Loop-Based Zero-Delay D PACKAGE (SOIC) PW PACKAGE (TSSOP) (TOP VIEW) Buffer D Operating Frequency: 8 MHz to 200 MHz D Low Jitter (Cycle-Cycle): ±100 ps Over the D D D D D D D D D 1 2 3 4 5 6 7 8 CLKIN 1Y0 1Y1 VDD GND 2Y0 2Y1 S2 Range 66 MHz to 200 MHz Distributes One Clock Input to Two Banks of Four Outputs Auto Frequency Detection to Disable Device (Power Down Mode) Consumes Less Than 20 µA in Power Down Mode Operates From Single 3.3-V Supply Industrial Temperature Range –40°C to 85°C 25-Ω On-Chip Series Damping Resistors No External RC Network Required Spread Spectrum Clock Compatible (SSC) Available in 16-Pin TSSOP or 16-Pin SOIC Packages 16 15 14 13 12 11 10 9 FBIN 1Y3 1Y2 VDD GND 2Y3 2Y2 S1 description The CDCVF25081 is a high-performance, low-skew, low-jitter, phase-lock loop clock driver. It uses a PLL to precisely align, in both frequency and phase, the output clocks to the input clock signal. The CDCVF25081 operates from a nominal supply voltage of 3.3 V. The device also includes integrated series-damping resistors in the output drivers that make it ideal for driving point-to-point loads. Two banks of four outputs each provide low-skew, low-jitter copies of CLKIN. All outputs operate at the same frequency. Output duty cycles are adjusted to 50%, independent of duty cycle at CLKIN. The device automatically goes into power-down mode when no input signal is applied to CLKIN and the outputs go into a low state. Unlike many products containing PLLs, the CDCVF25081 does not require an external RC network. The loop filter for the PLL is included on-chip, minimizing component count, space, and cost. Because it is based on a PLL circuitry, the CDCVF25081 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization is required following power up and application of a fixed-frequency signal at CLKIN and any following changes to the PLL reference. The CDCVF25081 is characterized for operation from -40°C to 85°C. FUNCTION TABLE S2 S1 1Y0–1Y3 2Y0–2Y3 OUTPUT SOURCE PLL SHUTDOWN 0 0 Hi-Z Hi-Z Yes 0 1 Active Hi-Z N/A. PLL† 1 0 Active Active Input clock (PLL bypass) PLL† Yes No 1 1 Active Active † CLK input frequency < 2 MHz switches the outputs to low level No Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2001 – 2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 Terminal Functions TERMINAL 2 TYPE DESCRIPTION NAME PIN NO. 1Y[0:3] 2, 3, 14, 15 O Bank 1Yn clock outputs. These outputs are low-skew copies of CLKIN. Each output has an integrated 25-Ω series-damping resistor. 2Y[0:3] 6, 7, 10, 11 O Bank 2Yn clock outputs. These outputs are low-skew copies of CLKIN. Each output has an integrated 25-Ω series-damping resistor. CLKIN 1 I Clock input. CLKIN provides the clock signal to be distributed by the CDCVF25081 clock driver. CLKIN is used to provide the reference signal to the integrated PLL that generates the output signal. CLKIN must have a fixed frequency and phase in order for the PLL to acquire lock. Once the circuit is powered up and a valid signal is applied, a stabilization time is required for the PLL to phase lock the feedback signal to CLKIN. FBIN 16 I Feedback input. FBIN provides the feedback signal to the internal PLL. FBIN must be wired to one of the outputs to complete the feedback loop of the internal PLL. The integrated PLL synchronizes the FBIN and output signal so there is nominally zero-delay from input clock to output clock. GND 5, 12 Ground S1, S2 9, 8 I VDD 4, 13 Power Ground Select pins to determine mode of operation. See the FUNCTION TABLE for mode selection options. Supply voltage. The supply voltage range is 3 V to 3.6 V POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 functional block diagram 2 25 Ω FBIN CLKIN 16 1 PLL M U X 3 25 Ω 14 25 Ω 15 25 Ω S2 S1 1Y0 1Y1 1Y2 1Y3 8 9 Input Select Decoding 6 25 Ω 7 25 Ω 10 25 Ω 11 25 Ω POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2Y0 2Y1 2Y2 2Y3 3 CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Supply voltage range, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V Input voltage range, VI (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V Output voltage range, VO (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VDD + 0.5 V Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Continuous total output current, IO (VO = 0 to VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Package thermal impedance, θJA (see Note 3): PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147°C/W D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output negative voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. This value is limited to 4.6 V maximum. 3. The package thermal impedance is calculated in accordance with JESD 51. recommended operating conditions MIN Supply voltage, VDD 3 NOM MAX 3.3 3.6 V 0.8 V Low level input voltage, VIL High level input voltage, VIH 2 Input voltage, VI 0 UNIT V 3.6 V High-level output current, IOH –12 mA Low-level output current, IOL 12 mA Operating free-air temperature, TA -40 85 °C timing requirements over recommended ranges of supply voltage, load and operating free-air temperature MIN Clock frequency, frequency fclk 4 NOM MAX CL = 25 pF 8 100 CL = 15 pF 66 200 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT MHz CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK II Input voltage IPD‡ IOZ Power down current CI Input capacitance at FBIN, CLKIN CI Input capacitance at S1, S2 CO Output capacitance VOH VOL TEST CONDITIONS Input current Output 3-state VDD = 3 V, VI = 0 V or VDD II = -18 mA fCLKIN = 0 MHz, Vo = 0 V or VDD, VDD = 3.3 V VDD = 3.6 V VI = 0 V or VDD VI = 0 V or VDD VI = 0 V or VDD VDD = min to max, VDD = 3 V, VDD = 3 V, High-level High level out output ut voltage VDD = min to max, VDD = 3 V, Low-level output Low level out ut voltage VDD = 3 V, VDD = 3 V, IOH IOL MIN VDD = 3.3 V, VDD = 3.6 V, High-level High level out output ut current VDD = 3 V, VDD = 3.3 V, Low-level output current VDD = 3.6 V, IOH = -100 µA IOH = -12 mA VDD – 0.2 2.1 IOH = -6 mA IOL = 100 µA 2.4 TYP† VO = 3.135 V VO = 1.95 V VO = 1.65 V VO = 0.4 V UNIT –1.2 V ±5 µA 20 µA ±5 µA 4 pF 2.2 pF 3 pF V 0.2 IOL = 12 mA IOL = 6 mA VO = 1 V VO = 1.65 V MAX 0.8 V 0.55 –24 –30 mA -15 26 mA 33 14 † All typical values are at respective nominal VDD. ‡ For IDD over frequency see Figure 7. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 switching characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER t(lock) t(phoffset) TEST CONDITIONS PLL lock time MIN f = 100 MHz Phase offset (CLKIN to FBIN) tPLH tPHL Low-to-high level output propagation delay tsk(o) Output skew (Yn to Yn) (see Note 4) tsk(pp) Part to part skew Part-to-part High-to-low level output propagation delay TYP† MAX UNIT µs 10 f = 8 MHz to 66 MHz, Vth = VDD/2 (see Note 5) –200 200 f = 66 MHz to 200 MHz, Vth = VDD/2 (see Note 5) –150 150 2.5 6 ns 150 ps S2 = High, f = 1 MHz, S1 = Low (PLL by bypass) ass) CL = 25 pF ps S2 = high, S1 = high (PLL mode) 600 S2 = high, S1 = low (PLL bypass) 700 f = 66 MHz to 200 MHz, CL = 15 pF ±100 ±150 tjit(cc) Jitter (cycle-to-cycle) f = 66 MHz to 100 MHz, CL = 25 pF f = 8 MHz to 66 MHz (see Figure 6) odc Output duty cycle f = 8 MHz to 200 MHz tsk(p) Pulse skew S2 = High, f = 1 MHz, S1 = low (PLL bypass) CL = 25 pF 0.8 3.3 Rise time rate CL = 15 pF, See Figure 4 tr CL = 25 pF, See Figure 4 0.5 2 0.8 3.3 Fall time rate CL = 15 pF, See Figure 4 tf CL = 25 pF, See Figure 4 0.5 2 43% POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 ps 57% 0.7 † All typical values are at respective nominal VDD. NOTES: 4. The tsk(o) specification is only valid for equal loading of all outputs. 5. Similar waveform at CLKIN and FBIN are required. For phase displacement between CLKIN and Y-outputs see Figure 5. 6 ps ns V/ns V/ns CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 PARAMETER MEASUREMENT INFORMATION VDD 1000 Ω From Output Under Test CL = 25 pF at f = 8 MHz to 100 MHz CL = 15 pF at f = 66 MHz to 200 MHz 1000 Ω NOTES: A. CL includes probe and jig capacitance. B. All input pulses are supplied by generators having the following characteristics: ZO = 50 Ω, tr < 1.2 ns, tf < 1.2 ns. C. The outputs are measured one at a time with one transition per measurement. Figure 1. Test Load Circuit VDD 50% VDD CLKIN 0V t(phoffset) VOH 50% VDD FBIN VOL Figure 2. Voltage Thresholds for Measurements, Phase Offset (PLL Mode) 50% VDD Any Y 50% VDD 50% VDD Any Y t1 tsk(0) t2 tsk(0) NOTE: odc = t1/(t1 + t2) x 100% Figure 3. Output Skew and Output Duty Cycle (PLL Mode) POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 PARAMETER MEASUREMENT INFORMATION VDD 50% VDD CLKIN 0V tPLH tPHL 80% VOH 80% 50% VDD 20% 50% VDD 20% Any Y VOL tr tf NOTE: tsk(p)=|tPLH–tPHL| Figure 4. Propagation Delay and Pulse Skew (Non-PLL Mode) PHASE DISPLACEMENT vs CLOAD CYCLE-TO-CYCLE JITTER vs FREQUENCY 100 500 VDD = 3.3 V All Outputs Switching CL(Yn) = 25 pF || 500 Ω 450 VDD = 3 V 400 Cycle-to-Cycle Jitter – ps Phase Displacement – ps 50 0 VDD = 3.6 V –50 VDD = 3.3 V –100 350 300 250 200 150 100 50 –150 –10 –8 –6 –4 –2 0 2 4 6 8 10 0 10 20 Cload Difference Between FBIN and Yn Pins – pF 40 50 60 Figure 5 Figure 6 POST OFFICE BOX 655303 70 f – Frequency – MHz (CFB + 4 pF) – CYn 8 30 • DALLAS, TEXAS 75265 80 90 100 CDCVF25081 3.3-V PHASED-LOCK LOOP CLOCK DRIVER SCAS671A – OCTOBER 2001 – REVISED FEBRUARY 2003 PARAMETER MEASUREMENT INFORMATION SUPPLY CURRENT vs FREQUENCY 180 VDD = 3 V to 3.6 V CL(Yn) = 15 pF || 500 Ω TA = –40°C to 85°C IDD – Supply current – mA 160 VDD = 3.6 V TA = 85°C 140 VDD = 3.6 V TA = –40°C 120 100 VDD = 3 V TA = –40°C 80 60 VDD = 3 V TA = 85°C 40 20 0 0 20 40 60 80 100 120 140 160 180 200 f – Frequency – MHz Figure 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 PACKAGE OPTION ADDENDUM www.ti.com 11-Dec-2006 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty CDCVF25081D ACTIVE SOIC D 16 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CDCVF25081DG4 ACTIVE SOIC D 16 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CDCVF25081DR ACTIVE SOIC D 16 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CDCVF25081DRG4 ACTIVE SOIC D 16 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CDCVF25081PW ACTIVE TSSOP PW 16 90 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CDCVF25081PWG4 ACTIVE TSSOP PW 16 90 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CDCVF25081PWR ACTIVE TSSOP PW 16 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CDCVF25081PWRG4 ACTIVE TSSOP PW 16 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant CDCVF25081DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 CDCVF25081PWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) CDCVF25081DR SOIC D 16 2500 367.0 367.0 38.0 CDCVF25081PWR TSSOP PW 16 2000 367.0 367.0 35.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. 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