Features. Modulation Frequency (khz) VDD. PLL Clock Synthesizer with Spread Spectrum Circuitry GND
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1 DATASHEET IDT5P50901/2/3/4 Description The IDT5P50901/2/3/4 is a family of 1.8V 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. Ordering Information Input Frequency 10 to 25 MHz - 5P50901NBGI/5P50901DVGI 20 to 50 MHz - 5P50902NBGI/5P50902DVGI 40 to 100 MHz - 5P50903NBGI/5P50903DVGI 80 to 170 MHz - 5P50904NBGI/5P50904DVGI Features 8-pin DFN package (2x2mm) 8-pin MSOP package (3x4.9mm) Provides a spread spectrum output clock Input frequency range of 10 to 170 MHz Output frequency range of 10 to 170 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 Input (MHz) Block Diagram Modulation (khz) Input (MHz) Modulation (khz) Modulation Frequency (khz) 5P ICLK*27/ P ICLK*27/ P ICLK*27/ P ICLK*27/80000 VDD 2 ICLK S2:S0 PLL Clock Synthesizer with Spread Spectrum Circuitry CLKOUT GND IDT 1 IDT5P50901/2/3/4 REV F
2 Pin Assignment ICLK 1 8 VDD VDD CLKOUT S0 GND S1 4 5 S2 8-pin DFN Spread Direction and Percentage Select Table S2 S1 S0 Spread Direction Pin Description Spread Percentage OFF Center ± Center ± Center ± Center ± Center ± Down Down -1.0 Pin Number Pin Name Pin Type Pin Description 1 ICLK Input Input clock. 2 VDD Power Voltage supply. Connect to 1.8 V ±0.1 V, 2.5 V ±10% or 3.3 V ±10%, 3 S0 Input Function select 0 input. Selects spread amount and direction per table above. Internal pull-down resistor. 4 S1 Input Function select 1 input. Selects spread amount and direction per table above. Internal pull-down resistor. 5 S2 Input Function select 2 input. Selects spread amount and direction per table above. Internal pull-down resistor. 6 GND Power Connect to ground. 7 CLKOUT Output Clock output. 8 VDD Power Voltage supply. Connect to 1.8 V ±0.1 V, 2.5 V ±10% or 3.3 V ±10% IDT 2 IDT5P50901/2/3/4 REV F
3 External Components Decoupling Capacitor As with any high-performance mixed-signal IC, the IDT5P50901/2/3/4 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. Series Termination Resistor Clock output traces over one inch should use series termination. To series terminate a 50Ω trace (a commonly used trace impedance), place a 33Ω resistor in series with the clock line, as close to the clock output pin as possible. The nominal impedance of the clock output is 20Ω. External Clock Input This device operates from an external clock input and as such does not have a on chip oscillator circuit. 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 33Ω series termination resistor (if needed) should be placed close to the clock output. 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 IDT5P50901/2/3/4. This includes signal traces just underneath the device, or on layers adjacent to the ground plane layer used by the device. Spread Spectrum Profile The IDT5P50901/2/3/4 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. The modulation rate is directly relate to the input clock frequency. For input frequency ICLK, then use the modulation frequency indicated for the part below. Modulation Rate Frequency Time IDT 3 IDT5P50901/2/3/4 REV F
4 Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the IDT5P50901/2/3/4. 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 Supply Voltage, VDD All Inputs Ambient Operating Temperature Storage Temperature Junction Temperature Soldering Temperature Rating -0.5 V to 5.0 V -0.5 V to VDD +0.5 V -40 to +85 C -50 to +150 C 125 C 260 C Recommended Operation Conditions Parameter Min. Typ. Max. Units Ambient Operating Temperature C Power Supply Voltage VDD (measured in respect to GND) V V V IDT 4 IDT5P50901/2/3/4 REV F
5 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 Operating Voltage VDD V Input High Voltage V IH ICLK, S2:S0 VDD x 0.8 VDD V Input Low Voltage V IL ICLK, S2:S0 GND VDD x 0.2 V Output High Voltage V OH I OH = -12 ma VDD x 0.75 VDD V Output Low Voltage V OL I OL = 12 ma GND VDD x 0.25 V IDD No load See table page 6 Input Capacitance 5 pf Load Capacitance 5 pf Internal Pull-down Resistor R PD S1:S kω Unless stated otherwise, VDD = 2.5 V ±10%. Ambient Temperature -40 to +85 C Parameter Symbol Conditions Min. Typ. Max. Units Operating Voltage VDD V Input High Voltage V IH ICLK, S2:S0 VDD x 0.8 VDD V Input Low Voltage V IL ICLK, S2:S0 GND VDD x 0.2 V Output High Voltage V OH I OH = -25 ma VDD x 0.9 VDD V Output Low Voltage V OL I OL = 25 ma GND VDD x 0.1 V IDD No load See table page 6 Input Capacitance 5 pf Load Capacitance 5 pf Internal Pull-down Resistor R PD S1:S kω Unless stated otherwise, VDD = 3.3 V ±10%. Ambient Temperature -40 to +85 C Parameter Symbol Conditions Min. Typ. Max. Units Operating Voltage VDD V Input High Voltage V IH ICLK, S2:S0 VDD x 0.8 VDD V Input Low Voltage V IL ICLK, S2:S0 GND VDD x 0.2 V Output High Voltage V OH I OH = -33 ma VDD x 0.9 VDD V Output Low Voltage V OL I OL = 33 ma GND VDD x 0.1 V IDD No load See table page 6 Input Capacitance 5 pf Load Capacitance 5 pf Internal Pull-down Resistor R PD S1:S kω IDT 5 IDT5P50901/2/3/4 REV F
6 Operational IDD IDT5P50901 IDT5P Idd (ma) V 2.5V 1.8V Idd (ma) V 2.5V 1.8V Fin Fin (MHz) IDT5P IDT5P Idd (ma) Idd (ma) V 2.5V 1.8V V 2.5V 1.8V Fin (MHz) Fin (MHz) 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 Min. Typ. Max. Units Output Clock Duty Cycle % 1.8V ±0.1V, >130MHz Output Rise Time t OR 20% to 80%, Note ns Output Fall Time t OF 80% to 20%, Note ns Spread Spectrum Modulation 10 to 25 MHz input (IDT5P50901) khz Rate 20 to 50 MHz input (IDT5P50902) khz 40 to 100 MHz input (IDT5P50903) khz 80 to 170 MHz input (IDT5P50904) khz Jitter Cycle to Cycle Cycle to cycle jitter 150 ps Output Settling Time Note ms Note 1: Measured with 5 pf load Note 2: Time between VDD rising above minimum operating voltage and stable frequency output IDT 6 IDT5P50901/2/3/4 REV F
7 Package Outline and Package Dimensions (8-pin DFN 2x2mm, 0.5mm pitch) Package dimensions are kept current with JEDEC Publication No. 95, Millimeters Symbol Min Max A A A Reference b N 8 N D 4 N E 0 D 2.00 BASIC E 2.00 BASIC e 0.50 BASIC D E L aaa 0.15 bbb 0.10 ccc 0.10 Marking Diagram (8DFN) 8 5 #### 9xGI 1 4 Notes: 1. #### is the last four numbers of the lot number. 2. Dot indicates pin G designates Pb (lead) free package. IDT 7 IDT5P50901/2/3/4 REV F
8 Package Outline and Package Dimensions (8-pin MSOP, 3.00 mm Body) Package dimensions are kept current with JEDEC Publication No Millimeters Inches* INDEX AREA 1 2 D E1 E Symbol Min Max Min Max A A A b C D 3.00 BASIC BASIC E 4.90 BASIC BASIC E BASIC BASIC e 0.65 Basic Basic L α aaa *For reference only. Controlling dimensions in mm. A 2 A A 1 - C - c e b aaa SEATING PLANE C L Marking Diagram (8 MSOP) 8 5 YYWW 90xGI 1 4 Notes: 1.YYWW is the assembly date code. 2. Dot indicates pin G designates Pb (lead) free package. 4. I designates industrial temperature range. IDT 8 IDT5P50901/2/3/4 REV F
9 Ordering Information Part / Order Number Marking Shipping Packaging Package Temperature 5P50901NBGI8 Tape and Reel 8-pin DFN -40 C to +85 C 5P50901DVGI Tube 8-pin MSOP -40 C to +85 C 5P50901DVGI8 Tape and Reel 8-pin MSOP -40 C to +85 C 5P50902NBGI8 Tape and Reel 8-pin DFN -40 C to +85 C 5P50902DVGI Tube 8-pin MSOP -40 C to +85 C 5P50902DVGI8 Tape and Reel 8-pin MSOP -40 C to +85 C see pages 7,8 5P50903NBGI8 Tape and Reel 8-pin DFN -40 C to +85 C 5P50903DVGI Tube 8-pin MSOP -40 C to +85 C 5P50903DVGI8 Tape and Reel 8-pin MSOP -40 C to +85 C 5P50904NBGI8 Tape and Reel 8-pin DFN -40 C to +85 C 5P50904DVGI Tube 8-pin MSOP -40 C to +85 C 5P50904DVGI8 Tape and Reel 8-pin MSOP -40 C to +85 C "G" after the two-letter package code denotes Pb-Free configuration, 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 9 IDT5P50901/2/3/4 REV F
10 Revision History Rev. Date Originator Description of Change A 6/28/11 R. WIllner Initial release. B 6/30/11 R. Willner Correct modulation rate on 5P50904, rise/fall time definition. C 07/29/11 R. Willner Added Internal Pull-down Resistor spec to DC char tables D 10/07/11 R. Willner Correct typographical errors. E 05/14/12 R. Willner Changed max Supply Voltage VDD rating from 7.0V to 5.0V F 08/21/12 R. Willner 1. Changed "Output High/Low Voltage" specs; conditions and min/max values for 1.8V DC electrical characteristics 2. Added an additional line for "Output Clock Duty Cycle" in AC char table to include conditions and values for 1.8V IDT 10 IDT5P50901/2/3/4 REV F
11 Innovate with IDT and accelerate your future networks. Contact: For Sales Fax: For Tech Support Corporate Headquarters Integrated Device Technology, Inc 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. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA
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