ICS503MLFT

DATASHEET ICS503 LOCO™ PLL CLOCK MULTIPLIER Description Features The ICS503 is a member of the LOCOTM family, the most cost effective way to generate a high-quality, high frequency clock output 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 160 MHz. • Packaged as 8-pin SOIC (Pb-free) or die • IDT’s lowest cost PLL clock • Generates 16.9344 MHz for stereo codecs from the 14.31818 MHz motherboard clock. • Can be cost effective in replacing a single surface-mount crystal • • • • • • • • • 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. Can be driven by other 5xx series Input crystal frequency of 5 - 27 MHz Input clock frequency of 2 - 50 MHz Output clock frequencies up to 160 MHz Low jitter - 50 ps one sigma Duty cycle of 45/55 up to 160 MHz Operating voltages of 3.0 to 5.5V 25 mA drive capability at TTL levels Advanced, low power CMOS process Block Diagram VDD S1, S0 2 X1/ICLK Crystal or Clock input X2 Optional crystal capacitors IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER Crystal OScillator CLK PLL Clock Multiplier Circuitry and ROM GND 1 ICS503 REV D 051310 ICS503 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER Pin Assignment 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 Clock Decoding Table (MHz) S1 S0 Multiplier Typ. Input (MHz) CLK (MHz) Input Range (MHz) at 5.0 V Input Range (MHz) at 3.3 V 0 0 10 10 100 2 < Input < 16 2 < Input < 16 0 M 16 10 160 2 < Input < 10 2 < Input < 6 0 1 1.1111 27 30 20 < Input < 50 20 < Input < 40 M 0 2.4444 14.31818 35 10 < Input < 50 10 < Input < 40 M M 2.4164 14.31818 34.60 10 < Input < 50 10 < Input < 40 M 1 2.4 14.31818 34.36 10 < Input < 50 10 < Input < 40 1 0 5.5873 14.31818 80 14 < Input < 28 14 < Input < 18 1 M 1.1827 14.31818 16.934 14 < Input < 30 14 < Input < 30 1 1 4.1905 14.31818 60 5 < Input < 38 5 < Input < 24 0 = connect directly to ground 1 = connect directly to VDD M = leave unconnected (floating) IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 2 ICS503 REV D 051310 ICS503 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 — 5 CLK Output 6 S0 Tri-level Input Select 0 for output clock. Connect to GND or VDD or float. 7 S1 Tri-level Input Select 1 for output clock. Connect to GND or VDD or float. 8 X2 Output IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER Pin Description No connect. Do not connect anything to this pin. Clock output per table above. Output frequency equals input freuency times multiplier. Crystal connection. Leave unconnected for clock input. 3 ICS503 REV D 051310 ICS503 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 ICS503 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 ICS503 to minimize lead inductance. No external power supply filtering is required for the ICS503. 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 ICS503. 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 0 to +70° C Storage Temperature -65 to +150° C Soldering Temperature 260° C Recommended Operation Conditions Parameter Min. Typ. Max. Units Ambient Operating Temperature 0 – +70 °C Power Supply Voltage (measured in respect to GND) +3 +5.5 V IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 4 ICS503 REV D 051310 ICS503 LOCO™ PLL CLOCK MULTIPLIER CLOCK MULTIPLIER DC Electrical Characteristics VDD=5.0 V ±5% , Ambient temperature 0 to +70° C, unless stated otherwise Parameter Operating Voltage Symbol Conditions VDD Min. 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 Mid Voltage VIM S1, S0 Input Low Voltage VIL S0, S1 Output High Voltage, CMOS high VOH IOH = -4 mA VDD-0.4 V Output High Voltage, CMOS high VOH IOH = -25 mA 2.4 V Output Low Voltage VOL IOL = 25 mA V (VDD/2)-1 VDD-0.5 V V VDD/2 V 0.5 0.4 V V IDD Operating Supply Current, 14 MHz crystal No load, 80 MHz 16 mA Short Circuit Current CLK output +70 mA Input Capacitance, S1, S0 Pins 6, 7 4 pF AC Electrical Characteristics VDD = 5.0V ±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 FOUT 14 160 MHz 14 100 MHz Output Frequency, VDD = 4.5 to 5.5V Output Frequency, VDD = 3.0 to 3.6V 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 IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER 5 45 49-51 55 % +100 ps 30 ps ICS503 REV D 051310 ICS503 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 Index Area E H Pin 1 Symbol Millimeters Min Max Inches Min Max A A1 B C D E e H h L a 1.35 1.75 1.10 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° 0.0532 0.0688 0.0040 0.0098 0.013 0.020 0.0075 0.0098 .1890 .1968 0.1497 0.1574 0.050 Basic 0.2284 0.2440 0.010 0.020 0.016 0.050 0° 8° h x 45 0 D A Q c e b Ordering Information Part / Order Number Marking Shipping packaging Package Temperature 503MLF 503MLFT 503MLF 503MLF Tubes Tape and Reel 8 pin SOIC 8 pin SOIC 0 to +70° C 0 to +70° C “LF” denotes Pb-free packaging, 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 ICS503 REV D 051310 ICS503 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. 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