P2084A ONSEMI | Alldatasheet

Document overview

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  • PDF pages: 7

Technical content

Features

  • Generates 2x and 4x clocks of the input clock frequency
  • Input clock frequency range from 3MHz to 78MHz
  • P2084A: 312MHz output clock frequency
  • External loop filter
  • Low Cycle-to-Cycle Jitter
  • 3.3V operating voltage range
  • 10mA output drives
  • TTL or CMOS compatible outputs
  • Ultra-low power CMOS design
  • Available in 8-pin SOIC Product Description P2084A is a versatile frequency multiplier that is designed specifically as cost effective alternatives to the high precision frequency oscillator. The P2084A can generate a 4x output clock of the input frequency which allows system cost savings by using an inexpensive crystal or resonator to achieve high frequency multiplication. The P2084A provides up to 312MHz output clock frequencies respectively through the use of the Phase- Lock-Loop (PLL) technique which delivers low jitter and high precision synthesized clocks.

Applications

The P2084A is targeted towards the high frequency CAN OSC replacement market. Applications include xDSL, routers, networking, PC peripherals, and embedded systems. Block Diagram Crystal Oscillator Frequency Divider Feedback Divider Phase Detector Modulation Output Divider VCO XIN / CLKIN XOUT FS0 FS1 LF VDD VSS PLL ModOUT

Rev. 1 | Page 2 of 7 | www.onsemi.com Pin Configuration Pin Description Pin# Pin Name Type Description 1 XIN / CLKIN I Connect to crystal or clock input. 2 XOUT I Crystal connection. If using an external r eference, this pin must be left unconnected. 3 FS1 I Digital logic input used to select input frequency range. (See Input Frequency Selection.) This pin has an internal pull-up resistor. 4 LF I External loop filter for the PLL. (See Loop Filter Selection Table for value.) 5 VSS P Ground connection. Connect to system ground . 6 CLKOUT O Clock output. 7 FS0 I Digital logic input used to select input frequency range. (See Input Frequency Selection .) This pin has an internal pull-up resistor. 8 VDD P Connect to +3.3V. Input Frequency Selection FS1 FS0 Input (MHz) Output Frequency Scaling P2084A 0 0 3 to 9 12 to 36 0 1 10 to 19 40 to 76 1 0 20 to 38 80 to 152 1 1 39 to 78 156 to 312 CLKOUT FS0 XOUT VSS XIN / CLKIN LF FS1 VDD

7 P2084A

Rev. 1 | Page 3 of 7 | www.onsemi.com Loop Filter Selection Table VDD 3.3V Input (MHz) FS1 FS0 C1(pF) C2(pF) R1 (ohms) 3 0 0 270 330,000 220 4 0 0 270 100,000 270 5 0 0 270 100,000 390 6 0 0 270 100,000 510 7 0 0 270 100,000 620 8 0 0 270 100,000 820 9 0 0 270 100,000 1,000 10 0 1 270 100,000 330 11 0 1 270 100,000 390 12 0 1 270 100,000 510 13 0 1 270 100,000 560 14 0 1 270 100,000 620 15 0 1 270 100,000 750 16 0 1 270 100,000 820 17 0 1 270 100,000 910 18 0 1 270 100,000 1,000 19 0 1 270 100,000 1,200 20 1 0 270 100,000 330 21 - 22 1 0 270 100,000 390 23 - 24 1 0 270 100,000 510 25 - 26 1 0 270 100,000 560 27 - 28 1 0 270 100,000 620 29 - 30 1 0 270 100,000 750 31 - 32 1 0 270 100,000 820 33 - 34 1 0 270 100,000 910 35 - 36 1 0 270 100,000 1,000 37 - 38 1 0 270 100,000 1,200 39 - 42 1 1 270 100,000 330 43 - 46 1 1 270 100,000 390 47 - 50 1 1 270 100,000 510 51 - 54 1 1 270 100,000 560 55 - 58 1 1 270 100,000 620 59 - 62 1 1 270 100,000 750 63 - 66 1 1 270 100,000 820 67 - 70 1 1 270 100,000 910 71 - 74 1 1 270 100,000 1,000 75 - 78 1 1 270 100,000 1,200

Rev. 1 | Page 4 of 7 | www.onsemi.com Output Clock Selection Example The P2084A can generate 4x from the input reference frequency. P2084A’s internal crystal oscillator circuits allow the use of an inexpensive crystal of resonator to replace expensive can oscillators that are used in networking, PC peripherals, xDSL, and consumer applications for high frequency generation. Its input frequency range is optimized for operation from 3MHz to 78MHz, and its output frequency can deliver up to 312MHz. LF FS1 VDD P2084A XIN XOUT VSS CLKOUT FS0 C1 C2 C L C L 0Ω VDD VDD VDD

Rev. 1 | Page 5 of 7 | www.onsemi.com Absolute Maximum Ratings Symbol Parameter Rating Unit VDD Voltage on any pin with respect to Ground -0.5 to +4.6 V TSTG Storage temperature -65 to +125 ° C Ts Max. Soldering Temperature (10 sec) 260 ° C TJ Junction Temperature 150 ° C TDV Static Discharge Voltage (As per JEDEC STD22- A114-B) 2 KV Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. Operating Conditions Parameter Description Min Max Unit VDD Supply Voltage 3.0 3.6 V TA Operating Temperature (Ambient Temperature) -40 +85 ° C C L Load Capacitance 15 pF C IN Input Capacitance 7 pF Symbol Parameter Min Typ Max Unit VIL Input low voltage GND-0.3 0.8 V VIH Input high voltage 2.0 VDD+0.3 V IIL Input low current (internal input pull-up resistor on FS0 and FS1) 60 µA IIH Input high current (internal input pull-up resistor on FS0 and FS1) 0 µA IXOL XOUT output low current 10 mA IXOH XOUT output high current 10 mA VOL Output low voltage (V DD = 3.3V, I OL = 20mA) 0.4 V VOH Output high voltage (V DD = 3.3V, I OH = 20mA) 2.5 V IDD Static supply current 3 mA ICC Typical dynamic supply current (25pF scope probe loading) 5.2 at 3MHz 21.2 at 82MHz mA VDD Operating voltage 3.0 3.3 3.6 V tON Power-up time (C LOOP = 0.1µF at 16MHz, first locked cycle after power up) 7 mS ZOUT Clock output impedance (at 16MHz) 28 Ω Symbol Parameter Min Typ Max Unit fIN Input frequency 3 78 MHz P2084A 12 312 MHz tLH 1 Output rise time (measured at 0.8V to 2.0V) 1 n s tHL 1 Output fall time (measured at 2.0V to 0.8V) 1 n s tJC Jitter (cycle-to-cycle) ±200 ps tD Output duty cycle 45 50 55 % Note: 1. t LH and t HL are measured into a capacitive load of 15 pF.

Rev. 1 | Page 6 of 7 | www.onsemi.com 8-Pin SOIC D E H D A 1 A2 A θ L C B e Symbol Dimensions Inches Millimeters Min Max Min Max A1 0.004 0.010 0.10 0.25 A 0.053 0.069 1.35 1.75 A2 0.049 0.059 1.25 1.50 B 0.012 0.020 0.31 0.51 C 0.007 0.010 0.18 0.25 D 0.193 BSC 4.90 BSC E 0.154 BSC 3.91 BSC e 0.050 BSC 1.27 BSC H 0.236 BSC 6.00 BSC L 0.016 0.050 0.41 1.27 θ 0° 8° 0° 8°

Note: This product utilizes US Patent #6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. U.S Patent Pending; Timing-Safe and Active Bead are trademarks of PulseCore Semiconductor, a wholly owned subsidiary of ON Semiconductor. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative Ordering Codes Part Number Marking Package Type Qty per reel Temperature P2084AF-08ST ABM 8-pin SOIC, tube, Pb Free 0° C to +70° C P2084AF-08SR ABM 8-pin SOIC, tape & reel, Pb Free 2500 0° C to +70° C A “microdot” placed at the end of last row of marking or just below the last row toward the center of package indicates Pb-free Licensed under US patent #5,488,627 and #5,631,920. Advance datasheet. Specification subject to change without notice .