DATASHEET MK2716 HDTV CLOCK SYNTHESIZER Description Features The MK2716 is a low-cost, low jitter, high-performance PLL clock synthesizer designed to produce the 74.176 MHz and 74.25 MHz clocks necessary for HDTV systems. Using IDT's patented analog Phase-Locked Loop (PLL) techniques, the device accepts a 27 MHz crystal or clock input. The zero ppm synthesis error exactly locks the display to the digital stream. * * * * * * * * * IDT manufactures the largest variety multimedia clock synthesizers for all applications. Consult IDT to eliminate crystals and oscillators from your board. For applications that require lower jitter, such as SDI and pixel clocks, use the ICS664. Packaged in 8-pin SOIC Pb (lead) free package Input frequency of 27 MHz Zero ppm synthesis error in output clock 3.3 V or 5 V 10% operating supply Ideal for HDTV applications and oscillator manufacturers 25 mA output drive capability at TTL levels Advanced, low power, sub-micron CMOS process Operating voltage of 3.3 V or 5 V Block Diagram VDD Clock Synthesis and Control Circuitry SEL 27 MHz crystal or clock input X1 Clock Buffer CLK 74.17582418 MHz or 74.2500 MHz 27.0000 MHz X2 2 GND IDTTM HDTV CLOCK SYNTHESIZER 1 MK2716 REV G 051310 MK2716 HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER Pin Assignment FREQUENCY SELECT TABLE ICLK/X1 1 8 X2 VDD 2 7 27M GND 3 6 SEL CLK 4 5 GND SEL CLK (MHz) 0 74.17582418 1 74.25 Pin Descriptions Pin Number Pin Name Pin Type Pin Description 1 ICLK/X1 XI 2 VDD Power Connect to +3.3 V or +5 V. 3 GND Power Connect to ground. 4 27M Output 74.17582418 MHZ or 74.25 MHz clock output (see table above). 5 GND Power Connect to ground. 6 SEL Input Select pin determines value of CLK per table above. 7 27M Output 8 X2 XO Crystal connection. Connect to a 27 MHz fundamental crystal or clock. 27 MHz buffered clock or crystal oscillator output. Crystal connection. Connect to a 27 MHz crystal, or leave unconnected for clock input. External Components Decoupling Capacitor should be used. 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. As with any high performance mixed-signal IC, the MK2716 must be isolated from system power supply noise to perform optimally. A decoupling capacitor of 0.01F must be connected between VDD and GND on pins 2 and 3. It must be connected close to the MK2716 to minimize lead inductance. Pin 5 can be connected to pin 3. No external power supply filtering is required for the MK2716. The value (in pF) of these crystal caps should equal (CL -16 pF)*2. In this equation, CL= crystal load capacitance in pF. Example: For a crystal with an 18 pF load capacitance, each crystal capacitor would be 4 pF [(18-16) x 2] = 4. Series Termination Resistor A 33 terminating resistor can be used next to the clock outputs for trace lengths over one inch. Crystal Load Capacitors The total on-chip capacitance is approximately 18 pF. A parallel resonant, fundamental mode, AT cut 27 MHz crystal IDTTM HDTV CLOCK SYNTHESIZER 2 MK2716 REV G 051310 MK2716 HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK2716. 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. Max. Units 0 +70 C +3.0 +5.5 V Ambient Operating Temperature Power Supply Voltage (measured in respect to GND) Typ. DC Electrical Characteristics VDD=5 V unless otherwise noted, Ambient temperature 0 to +70 C Parameter Symbol Conditions Min. Typ. Max. Units 5 5.5 V Operating Voltage VDD 3.0 Input High Voltage VIH 2.0 Input Low Voltage VIL Output High Voltage VOH IOH = -4 mA Output Low Voltage VOL IOL = 16 mA Operating Supply Current IDD No load 30 mA Each output +50 mA S0, S1 pins 7 pF Short Circuit Current Input Capacitance IDTTM HDTV CLOCK SYNTHESIZER CIN V 0.8 3 VDD-0.4 V V 0.4 MK2716 V REV G 051310 MK2716 HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER AC Electrical Characteristics VDD = 5 V unless otherwise noted, Ambient Temperature 0 to +70 C Parameter Symbol Input Frequency Conditions Min. FIN Typ. Max. Units 27 Frequency Error, Output Clock MHz 0 ppm Output Clock Rise Time tOR 0.8 to 2.0 V 1.5 ns Output Clock Fall Time tOF 2.0 to 8.0 V 1.5 ns 60 % Output Clock Duty Cycle at 1.4 V Maximum Absolute Jitter, short term tja 40 Deviation from mean 50 200 ps Thermal Characteristics Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Symbol Conditions Min. Typ. Max. Units JA Still air 150 C/W JA 1 m/s air flow 140 C/W JA 3 m/s air flow 120 C/W 40 C/W JC Marking Diagram (Pb free) 8 5 MK2716SL ###### YYWW 1 4 Notes: 1. ###### is the lot number. 2. YYWW is the last two digits of the year and week that the part was assembled. 3. "LF" or "L" denotes Pb (lead) free package. 4. Bottom marking: (origin) Origin = country of origin if not USA IDTTM HDTV CLOCK SYNTHESIZER 4 MK2716 REV G 051310 MK2716 HDTV CLOCK SYNTHESIZER CLOCK SYNTHESIZER Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters Inches 8 Symbol E A A1 B C D E e H h L H INDEX AREA 1 2 D A Min Max 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 Min Max .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050 0 8 h x 45 A1 C -Ce B SEATING PLANE L .10 (.004) C Ordering Information Part / Order Number Marking Shipping Packaging Package Temperature MK2716SLF MK2716SLFTR MK2716SL MK2716SL Tubes Tape and Reel 8-pin SOIC 8-pin SOIC 0 to +70 C 0 to +70 C 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. IDTTM HDTV CLOCK SYNTHESIZER 5 MK2716 REV G 051310 MK2716 HDTV 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 (c) 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