ICS512M

DATASHEET ICS512 LOCO™ PLL CLOCK MULTIPLIER Description Features The ICS512 is the most cost effective way to generate a high-quality, high frequency clock output and a reference clock from a lower frequency crystal or clock input. The name LOCO stands for Low Cost Oscillator, as it is designed to replace crystal oscillators in most electronic systems. Using Phase-Locked-Loop (PLL) techniques, the device uses a standard fundamental mode, inexpensive crystal to produce output clocks up to 200 MHz. With a reference output, this chip plus an inexpensive crystal can replace two oscillators • Packaged as 8-pin SOIC or die • Available in Pb (lead ) free package • Upgrade of popular ICS502 with: — changed multiplier table — higher operating frequncies • • • • • • • • • • • Stored in the chip’s ROM is the ability to generate nine different multiplication factors, allowing one chip to output many common frequencies (see table on page 2). This product is intended for clock generation. It has low output jitter (variation in the output period), but input to output skew and jitter are not defined or guaranteed. For applications which require defined input to output skew, use the ICS570B. Zero ppm multiplication error Easy to cascade with other 5xx series Input crystal frequency of 5 - 27 MHz Input clock frequency of 2 - 50 MHz Output clock frequencies up to 200 MHz Compatible with all popular CPUs Duty cycle of 45/55 up to 200 MHz Mask option for nine selectable frequencies Operating voltages of 3.0 to 5.5 V Industrial temperature version available Advanced, low power CMOS process NOTE: EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Block Diagram VDD S1, S0 X1/ICLK Crystal or Clock input X2 Optional crystal capacitors IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 2 PLL Clock Synthesis and Control Circuitry Crystal Oscillator CLK REF GND 1 ICS512 REV G 092209 ICS512 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER Pin Assignment Clock Output Table X1/ I CLK 1 8 X2 VDD 2 7 S1 GND 3 6 S0 REF 4 5 CLK 8 - p i n ( 1 5 0 mi l ) S OI C S1 S0 CLK 0 0 0 M M M 1 1 1 0 M 1 0 M 1 0 M 1 4X input 5.333X input 5X input 2.5X input 2X input 3.333X input 6X input 3X input 8X input 0 = connect directly to ground 1 = connect directly to VDD M = leave unconnected (floating) Common Output Frequencies Example (MHz) Output 20 24 30 32 33.33 37.5 40 48 50 60 64 Input 10 12 10 16 16.66 15 10 12 20 10 16 Selection (S1, S0) M,M M,M 1, M M,M M,M M,0 0,0 0,0 M,0 1,0 0,0 Output 66.66 72 75 80 83.33 90 100 120 125 133.3 150 Input 20 12 25 10 25 15 20 15 25 25 25 Selection (S1, S0) M,1 1,0 1,M 1,1 M,1 1,0 0,1 1,1 0,1 0,M 1,0 Note that all of the above are achieved using a common, inexpensive 10 MHz to 25 MHz crystal. Consult IDT on how to achieve other output frequncies. IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 2 ICS512 REV G 092209 ICS512 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER Pin Descriptions Pin Number Pin Name Pin Type 1 XI/ICLK Input Crystal connection or clock input. 2 VDD Power Connect to +3.3 V or +5 V. 3 GND Power Connect to ground. 4 NC REF 5 CLK Output 6 S0 Tri-level Input Mulitplier select pin 0. Connect to GND or VDD or float. 7 S1 Tri-level Input Mulitplier select pin 1. Connect to GND or VDD or float. 8 X2 Output Crystal connection. Leave unconnected for clock input. IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER Pin Description Buffered crystal oscillator output clock. Clock output per table above. 3 ICS512 REV G 092209 ICS512 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER External Components 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. Decoupling Capacitor As with any high-performance mixed-signal IC, the ICS512 must be isolated from system power supply noise to perform optimally. A decoupling capacitor of 0.01µF must be connected between VDD and GND. It must be connected close to the ICS512 to minimize lead inductance. No external power supply filtering is required for the ICS512. Series Termination Resistor 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. A 33Ω terminating resistor can be used next to the CLK pin. The total on-chip capacitance is approximately 12 pF. A parallel resonant, fundamental mode crystal should be used. Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS512. 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 7V All Inputs and Outputs -0.5 V to VDD+0.5 V Ambient Operating Temperature (commercial) 0 to +70° C Ambient Operating Temperature (industrial) -40 to +85° C Storage Temperature -65 to +150° C Soldering Temperature 260° C Recommended Operation Conditions Parameter Min. Max. Units 0 +70 °C Ambient Operating Temperature (industrial) -40 +85 °C Power Supply Voltage (measured in respect to GND) +3.0 +5.0 V Ambient Operating Temperature (commercial) IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 4 Typ. ICS512 REV G 092209 ICS512 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER DC Electrical Characteristics VDD=3.3 V ±5% , Ambient temperature 0 to +70° C, unless stated otherwise Parameter Operating Voltage Symbol Conditions Min. VDD Typ. 3 Max. Units 5.5 V Input High Voltage, ICLK only VIH ICLK (pin 1) (VDD/2)+1 VDD/2 Input Low Voltage, ICLK only VIL ICLK (pin 1) VDD/2 Input High Voltage VIH S0, S1 Input Low Voltage VIL S0, S1 Output High Voltage, CMOS high VOH IOH = -8 mA VDD-0.4 V Output High Voltage VOH IOH = -12 mA 2.4 V Output Low Voltage VOL IOL = 12 mA V (VDD/2)-1 VDD-0.5 V 0.5 IDD Operating Supply Current, 20 MHz crystal No load, 100 MHz Short Circuit Current CLK output Input Capacitance, S1, S0 Pins 6, 7 V V 0.4 V 9 mA +70 mA 4 pF AC Electrical Characteristics VDD=3.3 V ±5%, Ambient Temperature 0 to +70° C, unless stated otherwise Parameter Symbol Conditions Min. Typ. Max. Units Input Frequency, crystal input FIN 5 27 MHz Input Frequency, clock input FIN 2 50 MHz 0 to +70°C 14 200 MHz -40 to +85°C 14 160 MHz 0 to +70°C 14 160 MHz -40 to +85°C 14 145 MHz Output Frequency, VDD = 4.5 to 5.5 V Output Frequency, VDD = 3.0 to 3.6 V FOUT FOUT Output Clock Rise Time tOR 0.8 to 2.0 V 1 ns Output Clock Fall Time tOF 2.0 to 8.0V 1 ns Output Clock Duty Cycle tOD at VDD/2 Absolute Clock Period Jitter tja Deviation from mean One Sigma Clock Period Jitter tjs 45 49-51 55 % +200 ps 80 ps Note: The phase relationship between intput and output clocks can change at power up. For a fixed phase relationship, see the ICS570 or the ICS527. IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 5 ICS512 REV G 092209 ICS512 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters 8 Symbol E Min A A1 B C D E e H h L α H INDEX AREA 1 2 D Inches* Max Min 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BASIC 5.80 6.20 0.25 0.50 0.40 1.27 0° 8° Max .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050 0° 8° *For reference only. Controlling dimensions in mm. A h x 45 A1 C -Ce SEATING PLANE B L .10 (.004) C Ordering Information Part / Order Number Marking Shipping packaging Package Temperature 512M* 512MT* 512MLF 512MLFT 512MI* 512MIT* 512MILF 512MILFT ICS512M ICS512M 512MLF 512MLF ICS512MI ICS512MI 512MILF 512MILF Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C -40 to +85° C -40 to +85° C -40 to +85° C -40 to +85° C *NOTE: EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Parts that are ordered with a "LF" 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™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 6 ICS512 REV G 092209 ICS512 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER 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 © 2006 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