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| PRELIMINARY INFORMATION MK3713 Low Cost 3.3 Volt VCXO Description The MK3713 is ICS/MicroClock's lowest cost, low jitter, high performance 3.3 Volt VCXO designed to replace expensive VCXO modules. The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3.3 V input voltage to cause the output clocks to vary by 100 ppm. Using ICS/MicroClock's patented VCXO and analog Phase-Locked Loop (PLL) techniques, the device uses an inexpensive external pullable crystal input to produce the output clock. ICS/MicroClock manufactures the largest variety of communications, set-top box, and multimedia clock synthesizers for all applications. If more clock outputs are needed, see the MK3732 or MK377x family of parts. Consult ICS/MicroClock to eliminate VCXOs, crystals and oscillators from your board. Features * Packaged in 8 pin SOIC * Ideal for T1 and E1 VCXOs * Output range of 1.25 MHz to 10 MHz * For a 10-20 MHz output range, use the MK3711 * For higher than 20 MHz, use the MK3732-05 * 3.3 V only operating voltage * Uses an inexpensive 10 - 20 MHz external crystal * On-chip VCXO (patented) with pull range of 200ppm (minimum) * VCXO tuning voltage of 0 to 3.3 V * 12mA output drive capability at TTL levels * Advanced, low power, sub-micron CMOS process Block Diagram VIN X1 10 -20 MHz pullable crystal X2 Voltage Controlled Crystal Oscillator /N Output Buffer VCXOCLK S1, S0 1 Revision 020900 Integrated Circuit Systems, Inc. * 525 Race Street * San Jose *CA *95126* (408)295-9800tel * www.icst.com MDS 3713 B PRELIMINARY INFORMATION MK3713 Low Cost 3.3 Volt VCXO Pin Assignment Divider Select Table MK3713 X1 VDD VIN GND 1 2 3 4 8 7 6 5 X2 S1 VCXOCLK S0 S1 0 0 1 1 S0 0 1 0 1 VCXOCLK (MHz) Crystal /2 Crystal /4 Crystal /6 Crystal /8 8 pin (150 mil) SOIC Application Tip For 1.544 MHz (T1), use 12.352 MHz crystal /8 For 2.048 MHz (E1), use 12.288 MHz crystal /6 Pin Descriptions Number Name Description 1 X1 Crystal connection. Connect to a pullable 10 to 20 MHz crystal. 2 VDD VDD. Connect to + 3.3 V. 3 VIN Voltage input to VCXO. Zero to 3.3 V analog input which controls the frequency of the VCXO. 4 GND Connect to ground. 5 S0 Select pin for VCXO divider. See table above. 6 VCXOCLK VCXO clock output. Full CMOS output amplitude. 7 S1 Select pin for VCXO divider. See table above. 8 X2 Crystal connection. Connect to a pullable 10 to 20 MHz crystal. Pullable Crystal Specifications: Correlation (load) Capacitance C0/C1 ESR Operating Temperature Initial Accuracy Temperature plus Aging Stability 14 pF 240 max 35 max 0 to 70 C 20 ppm 50 ppm 2 Revision 020900 Integrated Circuit Systems, Inc. * 525 Race Street * San Jose *CA *95126* (408)295-9800tel * www.icst.com MDS 3713 B PRELIMINARY INFORMATION MK3713 Low Cost 3.3 Volt VCXO Electrical Specifications Parameter Supply voltage, VDD Inputs and Clock Outputs Ambient Operating Temperature Soldering Temperature Storage temperature Operating Voltage, VDD Output High Voltage, VOH Output Low Voltage, VOL Output High Voltage, VOH, CMOS level Input High Voltage, VIH Input Low Voltage, VIL Operating Supply Current, IDD Short Circuit Current VIN, VCXO control voltage Input Crystal Frequency Input Crystal Accuracy Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle Output Clock Pullability, note 2 Notes: Conditions Referenced to GND Referenced to GND Max of 10 seconds -65 3.15 2.4 VDD-0.4 2 0.8 No Load 0 10 0.8 to 2.0V 2.0 to 0.8V At VDD/2 0V VIN 3.3 V 7 50 3.3 20 30 1.5 1.5 60 3.30 Minimum Typical Maximum 7 VDD+0.5 70 260 150 3.45 0.4 Units V V C C C V V V V V V mA mA V MHz ppm ns ns % ppm ABSOLUTE MAXIMUM RATINGS (note 1) -0.5 0 DC CHARACTERISTICS (VDD = 3.3 V unless noted) IOH=-12mA IOL=12mA IOH=-4mA AC CHARACTERISTICS (VDD = 3.3 V unless noted) 40 100 50 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability. 2. With a ICS/MicroClock approved pullable crystal. External Components The MK3713 requires a minimum number of external components for proper operation. A decoupling capacitor of 0.01F should be connected between VDD and GND on pins 2 and 4, as close to the MK3713 as possible. A series termination resistor of 33 may be used for the clock output. The input crystal must be connected as close to the chip as possible. The input crystal should be a parallel mode, pullable, AT cut, 13.5 MHz, with 14 pF load capacitance. Consult ICS for recommended suppliers. IMPORTANT - read application note MAN05 before laying out the PCB. 3 Revision 020900 Integrated Circuit Systems, Inc. * 525 Race Street * San Jose *CA *95126* (408)295-9800tel * www.icst.com MDS 3713 B PRELIMINARY INFORMATION MK3713 Low Cost 3.3 Volt VCXO Package Outline and Package Dimensions (For current dimensional specifications, see JEDEC Publication No. 95.) 8 pin SOIC E Pin 1 H Symbol A A1 B C D A1 e B A C L D E e H h L Inches Min Max 0.0532 0.0688 0.0040 0.0098 0.0130 0.0200 0.0075 0.0098 0.1890 0.1968 0.1497 0.1574 .050 BSC 0.2284 0.2440 0.0099 0.0195 0.0160 0.0500 Millimeters Min Max 1.35 1.75 0.10 0.24 0.33 0.51 0.19 0.24 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.41 1.27 Ordering Information Part/Order Number MK3713S MK3713STR Marking MK3713S MK3713S Shipping packaging tubes tape and reel Package 8 pin SOIC 8 pin SOIC Temperature 0-70 C 0-70 C CHANGE HISTORY Version Date first published B 2/09/00 A 12/29/99 Status Preliminary Preliminary Comments Changed max output frequency to 10 MHZ Original While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems Incorporated (ICS) 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 ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. 4 Revision 020900 Integrated Circuit Systems, Inc. * 525 Race Street * San Jose *CA *95126* (408)295-9800tel * www.icst.com MDS 3713 B |
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