5P50914NBGI

DATASHEET IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER Description Features The IDT5P50911/2/3/4 is a family of 1.8V/2.5V/3.3V low power, spread spectrum clock generators capable of reducing EMI radiation from an input clock. Spread spectrum technique is capable of reducing the harmonic frequency amplitude peaks by several dB. • 8-pin DFN package (2x2mm) 8-pin MSOP package (3x4.9mm) • • • • • Ordering Information Output Frequency 5 to 15 MHz - 5P50911NBGI/5P50911DVGI 10 to 30 MHz - 5P50912NBGI/5P50912DVGI 20 to 60 MHz - 5P50913NBGI/5P50913DVGI 40 to 120 MHz - 5P50914NBGI/5P50914DVGI Provides a spread spectrum output clock Crystal input frequency range of 10 to 30 MHz Output frequency range of 10 to 120 MHz Center and down spread Peak reduction by 8 dB to 16 dB typical on 3rd through 19th odd harmonics • Low EMI feature can be disabled • Operating voltage of 1.8 V, 2.5 or 3.3V • RoHS 6 compliant package Spread Modulation Frequency Table Part Number Output Multiply 5P50911 5P50912 5P50913 5P50914 1/2x 1x 2x 4x Input (MHz) Modulation (kHz) Input (MHz) Modulation (kHz) Modulation Frequency (kHz) 10 27 30 81 Input frequency *27/10000 Block Diagram VDD S1:S0 X1 Crystal Oscillator PLL Clock Synthesizer with Spread Spectrum Circuitry OE CLKOUT X2 Optional tuning crystal capacitors IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER GND 1 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER Pin Assignment 1 X1/ICLK X2 8 VDD GND OE CLKOUT 4 S0 5 S1 8-pin DFN 8 -pin MSOP Spread Direction and Percentage Select Table S1 S0 Spread Direction Spread Percentage 0 0 1 1 0 1 0 1 OFF Center Center Down -±0.5 ±1.5 -0.5 Pin Description Pin Number Pin Name Pin Type Pin Description 1 X1 XI 2 VDD Power Voltage supply. Connect to 1.8 V ±0.1 V, 2.5 V ±10% or 3.3 V ±10%, 3 OE Input Output enable. Tri-states CLK output when low. Internal pull-up. 4 S0 Input Function select 0 input. Selects spread amount and direction per table above. Internal pull-down resistor. 5 S1 Input Function select 1 input. Selects spread amount and direction per table above. Internal pull-down resistor. 6 CLKOUT Output Clock output. Weal pull-down when OE low. 7 GND Power Connect to ground. 8 X2 XO Crystal input. Connect this pin to a crystal. Crystal output. Connect this pin to a crystal. IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 2 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER External Components Decoupling Capacitor 3) An optimum layout is one with all components on the same side of the board, minimizing vias through other signal layers. Other signal traces should be routed away from the IDT5P50911/2/3/4. This includes signal traces just underneath the device, or on layers adjacent to the ground plane layer used by the device. As with any high-performance mixed-signal IC, the IDT5P50911/2/3/4 must be isolated from system power supply noise to perform optimally. A decoupling capacitor of 0.01µF must be connected between each VDD and the PCB ground plane. Spread Spectrum Profile Series Termination Resistor The IDT5P50911/2/3/4 is a low EMI clock generator using an optimized frequency slew rate algorithm to facilitate down stream tracking of zero delay buffers and other PLL devices. Clock output traces over one inch should use series termination. To series terminate a 50 trace (a commonly used trace impedance), place a 33 resistor in series with the clock line, as close to the clock output pin as possible. The nominal impedance of the clock output is 20. The modulation rate is directly relate to the input crystal frequency. For input frequency ICLK, then use the modulation frequency indicated for the part below. Crystal Load Capacitors The device crystal connections should include pads for small capacitors from X1 to ground and from X2 to ground. These capacitors are used to adjust the stray capacitance of the board to match the nominally required crystal load capacitance. Because load capacitance can only be increased in this trimming process, it is important to keep stray capacitance to a minimum by using very short PCB traces (and no vias) between the crystal and device. Crystal capacitors, if needed, must be connected from each of the pins X1 and X2 to ground. Frequency Modulation Rate Time The value (in pF) of these crystal caps should equal (CL -12 pF)*2. In this equation, CL= crystal load capacitance in pF. Example: For a crystal with a 16 pF load capacitance, each crystal capacitor would be 8 pF [(16-12) x 2 = 8]. Modulation Frequency = Input Frequency/10000 Ex. Input Frequency = 20 MHz Modulation Frequency = 20 MHz/10000 = 2 kHz PCB Layout Recommendations For optimum device performance and lowest output phase noise, the following guidelines should be observed. 1) The 0.01µF decoupling capacitors should be mounted on the component side of the board as close to the VDD pin as possible. No vias should be used between the decoupling capacitors and VDD pins. The PCB trace to VDD pins should be kept as short as possible, as should the PCB trace to the ground via. 2) To minimize EMI, the 33 series termination resistor (if needed) should be placed close to the clock output. IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 3 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the IDT5P50911/2/3/4. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range. Item Rating Supply Voltage, VDD -0.5 V to 7.0 V All Inputs -0.5 V to VDD +0.5 V Ambient Operating Temperature -40 to +85C Storage Temperature -50 to +150C Junction Temperature 125C Soldering Temperature 260C Recommended Operation Conditions Parameter Min. Typ. Max. Units +85 C Ambient Operating Temperature -40 Power Supply Voltage VDD (measured in respect to GND) +1.7 +1.8 +1.9 V +2.25 +2.5 +2.75 V +2.97 +3.3 +3.63 V IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 4 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER DC Electrical Characteristics Unless stated otherwise, VDD = 1.8 V ±0.1 V. Ambient Temperature -40 to +85C Parameter Symbol Conditions Min. Typ. Max. Units 1.7 1.8 1.9 V Operating Voltage VDD Input High Voltage VIH ICLK, S2:S0 VDD x 0.8 VDD + 0.3 V Input Low Voltage VIL ICLK, S2:S0 GND VDD x 0.2 V Output High Voltage VOH IOH = -18 mA VDD x 0.9 Output Low Voltage VOL IOL = 18 mA GND No load TBD IDD VDD V VDD x 0.1 V Input Capacitance 5 pF Load Capacitance 5 pF Internal Pull-up Resistor RPU OE 400 520 k Internal Pull-down Resistor RPD S1:S0, CLKOUT 400 520 k Unless stated otherwise, VDD = 2.5 V ±10%. Ambient Temperature -40 to +85C Parameter Symbol Conditions Min. Typ. Max. Units 2.25 2.5 2.75 V Operating Voltage VDD Input High Voltage VIH ICLK, S2:S0 VDD x 0.8 VDD + 0.3 V Input Low Voltage VIL ICLK, S2:S0 GND VDD x 0.2 V Output High Voltage VOH IOH = -25 mA VDD x 0.9 Output Low Voltage VOL IOL = 25 mA GND No load TBD IDD VDD V VDD x 0.1 V Input Capacitance 5 pF Load Capacitance 5 pF Internal Pull-up Resistor RPU OE 300 390 k Internal Pull-down Resistor RPD S1:S0, CLKOUT 300 390 k Unless stated otherwise, VDD = 3.3 V ±10%. Ambient Temperature -40 to +85C Parameter Symbol Conditions Min. Typ. Max. Units 2.97 3.3 3.63 V Operating Voltage VDD Input High Voltage VIH ICLK, S2:S0 VDD x 0.8 VDD + 0.3 V Input Low Voltage VIL ICLK, S2:S0 GND VDD x 0.2 V Output High Voltage VOH IOH = -33 mA VDD x 0.9 Output Low Voltage VOL IOL = 33 mA GND No load TBD IDD Input Capacitance IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER VDD V VDD x 0.1 5 5 V pF IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER Parameter Symbol CLOCK SYNTHESIZER Conditions Min. Load Capacitance Typ. Max. Units 5 pF Internal Pull-up Resistor RPU OE 200 260 k Internal Pull-down Resistor RPD S1:S0, CLKOUT 200 260 k AC Electrical Characteristics Unless stated otherwise, VDD = 1.8 V ±0.1 V, 2.5 V ±10% or 3.3 V ±10%. Ambient Temperature -40 to +85C Parameter Symbol Conditions Output Clock Duty Cycle Min. Typ. 45 50 Max. Units 55 % Output Rise Time tOR 20% to 80%, Note 1 1.2 ns Output Fall Time tOF 80% to 20%, Note 1 1.2 ns Spread Spectrum Modulation Rate 5 to 15 MHz output (IDT5P50911) 27 81 kHz 10 to 30 MHz output (IDT5P50912) 27 81 kHz 20 to 60 MHz output (IDT5P50913) 27 81 kHz 40 to 120 MHz output (IDT5P50914) 27 81 kHz Jitter Cycle to Cycle Cycle to cycle jitter Output Settling Time Note 2 150 ps 3.0 ms Note 1: Measured with 5 pF load Note 2: Time between VDD rising above minimum operating voltage and stable frequency output IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 6 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER Package Outline and Package Dimensions (8-pin DFN 2x2mm, 0.5mm pitch) Package dimensions are kept current with JEDEC Publication No. 95, Symbol A A1 A3 b N ND NE D E e D2 E2 L aaa bbb ccc Min Millimeters Max 0.80 1.00 0 0.05 0.20 Reference 0.20 0.30 8 4 0 2.00 BASIC 2.00 BASIC 0.50 BASIC 1.05 1.25 0.45 0.65 0.20 0.40 0.15 0.10 0.10 Marking Diagram (8DFN) 5 8 911GI YYWW$ 1 4 Notes: 1. Line 1: truncated part number (format to be the same for 912, 913, and 914 devices). 2. “G” designates Pb (lead) free package. 3. “I” denotes industrial temperature range. 4. “YYWW” is the last two digits of the year and week that the part was assembled. 5. “$” is the mark code. 6. Bottom marking: country of origin. IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 7 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER Package Outline and Package Dimensions (8-pin MSOP, 3.00 mm Body) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters 8 Symbol E1 E IN D E X AREA 1 Min A A1 A2 b C D E E1 e L  aaa 2 D Max -1.10 0 0.15 0.79 0.97 0.22 0.38 0.08 0.23 3.00 BASIC 4.90 BASIC 3.00 BASIC 0.65 Basic 0.40 0.80 0 8 0.10 Inches* Min Max -0.043 0 0.006 0.031 0.038 0.008 0.015 0.003 0.009 0.118 BASIC 0.193 BASIC 0.118 BASIC 0.0256 Basic 0.016 0.032 0 8 0.004 *For reference only. Controlling dimensions in mm. A 2 A A 1 c -C e b S E A T IN G P LA N E  L aaa C Marking Diagram (8 MSOP) 5 8 XXXX 911I 4 1 Notes: 1. “XXXX” is the lot sequence number. 2. Line 2: truncated part number (format to be the same for 912, 913, and 914 devices). 3. “I” denotes industrial temperature range. 4. Bottom marking: country of origin. IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 8 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER Ordering Information Part / Order Number 5P50911NBGI8 5P50911DVGI 5P50911DVGI8 5P50912NBGI8 5P50912DVGI 5P50912DVGI8 5P50913NBGI8 5P50913DVGI 5P50913DVGI8 5P50914NBGI8 5P50914DVGI 5P50914DVGI8 Marking Shipping Packaging Package Temperature see pages 7,8 Tape and Reel Tube Tape and Reel Tape and Reel Tube Tape and Reel Tape and Reel Tube Tape and Reel Tape and Reel Tube Tape and Reel 8-pin DFN 8-pin MSOP 8-pin MSOP 8-pin DFN 8-pin MSOP 8-pin MSOP 8-pin DFN 8-pin MSOP 8-pin MSOP 8-pin DFN 8-pin MSOP 8-pin MSOP -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C "G" suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes no responsibility for either its use or for the 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 IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 9 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER Revision History Rev. Originator Date Description of Change A R. WIllner 11/10/11 Initial release. B R. Willner 12/5/11 Revised pinout and modulation rate. C R. Willner 4/6/12 1. Crystal input only. 2. Added marking diagrams. D S. Sharma 7/02/14 Changed Modulation Frequency formula and example (pg. 3) input frequency from 400MHz to 10000MHz. IDT® SPREAD SPECTRUM CLOCK SYNTHESIZER 10 IDT5P50911/2/3/4 REV D 070214 IDT5P50911/2/3/4 SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 www.idt.com/go/clockhelp Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 2011 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. 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