P2384A PULSECORE | Alldatasheet

Document overview

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Technical content

Features

  • Generates 4X clocks of the Input Clock frequency
  • Input clock frequency range from 20 MHz to 78 MHz
  • Provides up to 312 MHz Output Clock frequency
  • External loop filter
  • Low Cycle-to-cycle jitter
  • 3.3 V Operating Voltage
  • TTL or CMOS compatible outputs
  • Ultra-low power CMOS design
  • Available in Commercial and Industrial temperature ranges
  • Available in 8-pin SOIC and TSSOP Packages Product Description The P2384A is a versatile frequency multiplier that is designed specifically as cost effective alternative to the high precision frequency oscillator. The P2384A can generate a 4X output clock of the input frequency that allows system cost savings by using an inexpensive crystal or resonator to achieve high frequency multiplication. The P2384A provides up to 312 MHz output clock frequency through the use of the Phase-Lock-Loop (PLL) technique which delivers low jitter and high precision synthesized clocks.

Applications

The P2384A is targeted towards the high frequency CAN OSC replacement market. Applications include xDSL, routers, networking, PC peripherals, and embedded systems. Block Diagram XIN Modulation Phase detector Feedback divider Frequency divider VCO Output divider Crystal Oscillator XOUT FS0 PDB LF PLL VDD CLKOUT VSS

rev 0.2 Low Cost Frequency Multiplier 2 of 10 Notice: The information in this document is subject to change without notice. Pin Configuration Pin Description Pin# Pin Name Type Description

1 XIN I Crystal connection or external reference frequency input

2 XOUT O Crystal connection. If using an external reference, this pin must be left unconnected. 3 PDB I Power-down control pin. Pull low to enable power-down mode. Connect directly to VDD in normal operation and if not used. 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 +3.3 V. Input Frequency Selection FS0 Input (MHz) Output Frequency Scaling (MHz) 0 20 to 38 80 to 152 1 39 to 78 156 to 312 4 5 CLKOUT VDD VSS XIN XOUT PDB LF FS0 P2384A

rev 0.2 Low Cost Frequency Multiplier 3 of 10 Notice: The information in this document is subject to change without notice. Loop Filter Selection Table ( VDD 3.3 V ) Input (MHz) FS0 C1(pF) C2(pF) R1 (ohms) 20 0 270 100,000 330 21 - 22 0 270 100,000 390 23 - 24 0 270 100,000 510 25 - 26 0 270 100,000 560 27 - 28 0 270 100,000 620 29 - 30 0 270 100,000 750 31 - 32 0 270 100,000 820 33 - 34 0 270 100,000 910 35 - 36 0 270 100,000 1,000 37 - 38 0 270 100,000 1,200 39 - 42 1 270 100,000 330 43 - 46 1 270 100,000 390 47 - 50 1 270 100,000 510 51 - 54 1 270 100,000 560 55 - 58 1 270 100,000 620 59 - 62 1 270 100,000 750 63 - 66 1 270 100,000 820 67 - 70 1 270 100,000 910 71 - 74 1 270 100,000 1,000 75 - 78 1 270 100,000 1,200 C2 C1 Pin 4 LF

rev 0.2 Low Cost Frequency Multiplier 4 of 10 Notice: The information in this document is subject to change without notice. Output Clock Selection Example The P2384A can generate 4X Clock from t he Input reference frequency. P2384A’s in ternal crystal oscillator circuits allow the use of an inexpensive crystal or resonator to replace expensive CAN oscillators that are used in networking, PC peripherals, xDSL, and consumer applications for high frequ ency generation. Its input frequency range is optimized for operations from 20 MHz to 78 MHz, and its output frequency can deliver up to 312 MHz. VDD FS0 CLKOUT VSSLF PDB XOUT XIN P2384A +3.3V Modulated 100 MHz

25 MHz

0.1µF

rev 0.2 Low Cost Frequency Multiplier 5 of 10 Notice: The information in this document is subject to change without notice. Absolute Maximum Ratings Symbol Parameter Rating Unit VDD, VIN Voltage on any pin with respect to Ground -0.5 to +4.6 V TSTG Storage temperature -65 to +125 °C TA Operating temperature -40 to +85 °C Ts Max. Soldering Temperature (10 sec) 260 °C TJ Junction Temperature 150 °C TDV Static Discharge Voltage (As per JEDEC STD 22- 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. Symbol Parameter Min Typ Max Unit VIL Input low voltage VSS - 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 PDB) – 180 – µA IIH Input high current (Internal input pull-up resistor on FS0 and PDB) – 0 – µA IXOL XOUT output low current – 10 – mA IXOH XOUT output high current – 10 – mA VOL Output low voltage (V DD = 3.3 V, IOL = 20 mA) – – 0.4 V VOH Output high voltage (V DD = 3.3 V, IOH = 20 mA) 2.5 – – V IDD Static supply current* – 3 – mA ICC Typical dynamic supply current (25 pF scope probe loading) – 28 – mA VDD Operating volta ge 3.0 3.3 3.6 V tON Power-up time – 7 – mS ZOUT Clock output impedance – 28 – Ω * XIN and PBD are pulled low.

rev 0.2 Low Cost Frequency Multiplier 6 of 10 Notice: The information in this document is subject to change without notice. Symbol Parameter Min Typ Max Unit fIN Input frequency 20 – 78 MHz fOUT Output frequency 80 – 312 MHz tLH * Output rise time (measured at 0.8 V to 2.0 V) – 1 – nS tHL * Output fall time (measured at 2.0 V to 0.8 V) – 1 – nS tJC Jitter (cycle to cycle) – ±200 – pS tD Output duty cycle 45 50 55 % * tLH and tHL are measured into a capacitive load of 15 pF

rev 0.2 Low Cost Frequency Multiplier 7 of 10 Notice: The information in this document is subject to change without notice.

Package Information

8-lead (150-mil) SOIC Package D E H D A2 A θ L C B e Dimensions Inches Millimeters Symbol 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°

rev 0.2 Low Cost Frequency Multiplier 8 of 10 Notice: The information in this document is subject to change without notice. E H A D B C L θ e 8-lead Thin Shrunk Small Outline Package (4.40-MM Body) Dimensions Inches Millimeters Symbol Min Max Min Max A 0.043 1.10 A1 0.002 0.006 0.05 0.15 A2 0.033 0.037 0.85 0.95 B 0.008 0.012 0.19 0.30 c 0.004 0.008 0.09 0.20 D 0.114 0.122 2.90 3.10 E 0.169 0.177 4.30 4.50 e 0.026 BSC 0.65 BSC H 0.252 BSC 6.40 BSC L 0.020 0.028 0.50 0.70 θ 0° 8° 0° 8°

rev 0.2 Low Cost Frequency Multiplier 9 of 10 Notice: The information in this document is subject to change without notice. Ordering Codes Part Number Marking Package Type Qty per reel Temperature P2384A-08ST P2384AG 8-pin SOIC, Tube, GREEN Commercial P2384A-08SR P2384AG 8-pin SOIC, Tape & reel, GREEN 2500 Commercial P2384A-08TT P2384AG 8-pin TSSOP, Tube, GREEN Commercial P2384A-08TR P2384AG 8-pin TSSOP, Tape & reel, GREEN 2500 Commercial I2384A-08ST I2384AG 8-pin SOIC, Tube, GREEN Industrial I2384A-08SR I2384AG 8-pin SOIC, Tape & reel, GREEN 2500 Industrial I2384A-08TT I2384AG 8-pin TSSOP, Tube, GREEN Industrial I2384A-08TR I2384AG 8-pin TSSOP, T ape & reel, GREEN 2500 Industrial P2384AF-08ST P2384AF 8-pin SOIC, Tube, Pb Free Commercial P2384AF-08SR P2384AF 8-pin SOIC, Tape & reel, Pb Free 2500 Commercial P2384AF-08TT P2384AF 8-pin TSSO P, Tube, Pb Free Commercial P2384AF-08TR P2384AF 8-pin TSSOP, Tape & reel, Pb Free 2500 Commercial I2384AF-08ST I2384AF 8-pin SOIC, Tube, Pb Free Industrial I2384AF-08SR I2384AF 8-pin SOIC, Tape & reel, Pb Free 2500 Industrial I2384AF-08TT I2384AF 8-pin TSSOP, Tube, Pb Free Industrial I2384AF-08TR I2384AF 8-pi n TSSOP, Tape & reel, Pb Free 2500 Industrial Device Ordering Information P 2384AX-08ST Licensed under US patent Nos 5,488,627 and 5,631,920. SR - SOIC, T/R TT – TSSOP, TUBE TR - TSSOP, T/R ST – SOIC, TUBE P = Commercial Temperature Range (0°C to 70°C) I = Industrial Tem perature Range (-40°C to 85°C) PIN COUNT Deviation (%) and Spread option Identifier F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS DEVICE NUMBER

rev 0.2 Low Cost Frequency Multiplier 10 of 10 Notice: The information in this document is subject to change without notice. Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003 © Copyright 2007 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks of PulseCore Semiconductor. All ot her brand and product names may be the trademarks of their respective companies. PulseCore reserves the right to make changes to this document and its products at any time without notice. PulseCore assumes no responsibility for any errors t hat may appear in this document. The data contained herein represents PulseCore’s best data and/or estimates at the time of issuance. PulseCore reserves the right to change or correct this data at any time, without notice. If the product descri bed 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 in tended to operate as, or provide, any guarantee or warrantee to any user or customer. PulseCore does not assume any responsibility or liability arising out of the app lication or use of any product described herein, and disclaims any express or implied warrant ies related to the sale and/or use of PulseCore products including liability or warranties related to fitness for a particular purpose, mercha ntability, or infringement of any intellec tual property rights, except as express agreed to in PulseCore’ s Terms and Conditions of Sale (which are available from PulseCore). All sales of PulseCore products are made exclusiv ely according to PulseCore’s Terms and Conditions of Sale. The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellect ual property rights of PulseCore or third partie s. PulseCore 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 PulseC ore products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify PulseCore against all claims arising from such use. PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018 www.pulsecoresemi.com Copyright © PulseCore Semiconductor All Rights Reserved Part Number: P2384A Document Version: v0.2