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| October 2003 rev 0.4 Low Cost Frequency Multiplier Features Generates 2X and 4X clocks of the input clock frequency Input clock frequency range from 3 MHz to 78 MHz Provides up to: P2082A: 156 MHz output clock frequency P2084A: 312 MHz output clock frequency External loop filter Low cycle-to-cycle jitter 3.3 V operating voltage range 10 mA output drives TTL or CMOS compatible outputs Ultra-low power CMOS design Available in industrial temperature range (-25C to +85C) Available in 8-pin SOIC and TSSOP P2082A P2084A multipliers that are designed specifically as cost effective alternatives to the high precision frequency oscillator. The P2082A/84A can generate a 2X and 4X output clock respectively of the input frequency which allows system cost savings by using an inexpensive crystal or resonator to achieve high frequency multiplication. The P2082A/84A provides up to 156 MHz and 312 MHz 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 P2082A/84A is targeted towards the high frequency CAN OSC replacement market. Applications include xDSL, routers, networking, PC peripherals, and embedded systems. Product Description The P2082A and P2084A are versatile frequency Block Diagram Alliance Semiconductor 2575, Augustine Drive * Santa Clara, CA * Tel: 408.855.4900 * Fax: 408.855.4999 * www.alsc.com Notice: The information in this document is subject to change without notice. October 2003 rev 0.4 Pin Configuration P2082A P2084A Pin Description Pin# 1 2 3 4 5 6 7 8 Pin Name XIN/CLKIN XOUT FS1 LF VSS CLKOUT FS0 VDD Type I I I I P O I P Description Connect to crystal or clock input. Crystal output. Digital logic input used to select input frequency range. (See Input Frequency Selection.) This pin has an internal pull-up resistor. External loop filter for the PLL. (See Loop Filter Selection Table for value.) Ground connection. Connect to system ground. Clock output. Digital logic input used to select input frequency range. (See Input Frequency Selection.) This pin has an internal pull-up resistor. Connect to +3.3 V. Input Frequency Selection FS1 0 0 1 1 FS0 0 1 0 1 Input (MHz) 3 to 9 10 to 19 20 to 38 39 to 78 Output Frequency Scaling P2082A P2084A 6 to 18 12 to 36 20 to 38 40 to 76 78 to 156 40 to 76 80 to 152 156 to 312 Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 2 of 9 October 2003 rev 0.4 Loop Filter Selection Table VDD 3.3 V P2082A P2084A Input (MHz) 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 - 22 23 - 24 25 - 26 27 - 28 29 - 30 31 - 32 33 - 34 35 - 36 37 - 38 39 - 42 43 - 46 47 - 50 51 - 54 55 - 58 59 - 62 63 - 66 67 - 70 71 - 74 75 - 78 FS1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 FS0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 C1(pF) 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 C2(pF) 330,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 R1 (ohms) 220 270 390 510 620 820 1,000 330 390 510 560 620 750 820 910 1,000 1,200 330 390 510 560 620 750 820 910 1,000 1,200 330 390 510 560 620 750 820 910 1,000 1,200 Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 3 of 9 October 2003 rev 0.4 Output Clock Selection Example P2082A P2084A 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 3 MHz to 78 MHz, and its output frequency can deliver up to 312 MHz. Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 4 of 9 October 2003 rev 0.4 Absolute Maximum Ratings Symbol VDD, VIN TSTG TA Parameter Voltage on any pin with respect to GND Storage temperature Operating temperature Rating -0.5 to + 7.0 -65 to +125 0 to 70 P2082A P2084A Unit V C C DC Electrical Characteristics Symbol VIL VIH IIL IIH IXOL IXOH VOL VOH IDD ICC VDD tON ZOUT Input low voltage Input high voltage Input low current (internal input pull-up resistor on FS0 and FS1) Input high current (internal input pull-up resistor on FS0 and FS1) XOUT output low current XOUT output high current Output low voltage (VDD = 3.3 V, IOL = 20 mA) Output high voltage (VDD = 3.3 V, IOH = 20 mA) Static supply current Typical dynamic supply current (25 pF scope probe loading) Operating voltage Power-up time (CLOOP = 0.1 F at 16 MHz, first locked cycle after power up) Clock output impedance (at 16 MHz) Parameter Min GND - 0.3 2.0 - - - - - 2.5 - 5.2 at 3 MHz 3.0 - - Typ - - 60 0 10 10 - - 3 Max 0.8 VDD + 0.3 - - - - 0.4 - - 21.2 at 82 MHz 3.6 - - Unit V V A A mA mA V V mA mA V mS 3.3 7 28 AC Electrical Characteristics Symbol fIN fOUT tLH tHL tD 1 1 Parameter Input frequency P2082A P2084A Output rise time (measured at 0.8 V to 2.0 V) Output fall time (measured at 2.0 V to 0.8 V) Jitter (cycle to cycle) Output duty cycle Min 3 6 12 Typ - - 1 1 Max 78 156 312 Unit MHz MHz MHz ns ns tJC - 45 200 50 - 55 ps % 1 tLH and tHL are measured into a capacitive load of 15 pF Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 5 of 9 October 2003 rev 0.4 Package Information P2082A P2084A Mechanical Package Outline 8-Pin SOIC Symbol A A1 A2 B C D E e H L a Dimensions in inches Min 0.057 0.004 0.053 0.012 0.004 0.186 0.148 Nor 0.064 0.007 0.061 0.016 0.006 0.194 0.156 0.050 BSC 0.224 0.012 0 0.236 0.020 5 0.248 0.028 8 Max 0.071 0.010 0.069 0.020 0.01 0.202 0.164 Dimensions in millimeters Min 1.45 0.10 1.35 0.31 0.10 4.72 3.75 Nor 1.63 0.18 1.55 0.41 0.15 4.92 3.95 1.27 BSC 5.70 0.30 0 6.00 0.50 5 6.30 0.70 8 Max 1.80 0.25 1.75 0.51 0.25 5.12 4.15 Note: Controlling dimensions are millimeters SOIC - 0.074 grams unit weight Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 6 of 9 October 2003 rev 0.4 Mechanical Package Outline 8-Pin TSSOP P2082A P2084A Dimensions in inches Symbol A A1 A2 B C D E e H L a 0.244 0.018 0 0.002 0.031 0.007 0.004 0.114 0.169 0.118 0.173 0.026 BSC 0.252 0.024 0.260 0.030 8 0.039 Min Nor Max 0.047 0.006 0.041 0.012 0.008 0.122 0.177 Dimensions in millimeters Min Nor Max 1.10 0.05 0.80 0.19 0.09 2.90 4.30 3.00 4.40 0.65 BSC 6.20 0.45 0 6.40 0.60 6.60 0.75 8 1.00 0.15 1.05 0.30 0.20 3.10 4.50 5 5 Note: Controlling dimensions are millimeters TSSOP - 0.034 grams unit weight Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 7 of 9 October 2003 rev 0.4 Ordering Codes Part Number P208XA-08ST P208XA-08SR P208XA-08TT P208XA-08TR Marking P208XA P208XA P208XA P208XA Package Type 8-pin SOIC, tube 8-pin SOIC, tape & reel 8-pin TSSOP, tube 8-pin TSSOP, tape & reel 2500 2500 Qty per reel P2082A P2084A Temperature (C) 0 to 70 0 to 70 0 to 70 0 to 70 Device Ordering Information X 208XAX-08 XX Package: ST - SOIC, TUBE SR - SOIC, T/R TT - TSSOP, TUBE TR - TSSOP, T/R Pin Count F = Pb FREE DEVICE NUMBER Flow: P = Commercial Temperature Range (0C to 70C) I = Industrial Temperature Range (-25C to 85C) A = Automotive Temperature Range (-40C to 125C) Licensed under US patent Nos 5,488,627 and 5,631,920. Advance datasheet. Specification subject to change without notice. Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 8 of 9 October 2003 rev 0.4 P2082A P2084A Alliance Semiconductor Corporation 2595, Augustine Drive, Santa Clara, CA 95054 Tel# 408-855-4900 Fax: 408-855-4999 www.alsc.com Copyright (c) Alliance Semiconductor All Rights Reserved Advance Information Part Number: P2082A/P2084A Document Version: v 0.4 (c) Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. Alliance does not assume any responsibility or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale and/or use of Alliance products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in Alliance's Terms and Conditions of Sale (which are available from Alliance). All sales of Alliance products are made exclusively according to Alliance's Terms and Conditions of Sale. The purchase of products from Alliance does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of Alliance or third parties. Alliance does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of Alliance products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use. Low Cost Frequency Multiplier Notice: The information in this document is subject to change without notice. 9 of 9 |
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