PCS3P2189A_1 PULSECORE | Alldatasheet

Document overview

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Technical content

Features

  • Generates a 4X low EMI spread spectrum clock of the input frequency.
  • Input frequency: 10MHz - 25MHz
  • Output frequency: 40MHz - 100MHz
  • Internal loop filter minimizes external components and board space.
  • Selectable Centre Spread frequency deviation:
  • Supply Voltage :3.3V ± 0.3V
  • Commercial and Industrial temperature range
  • 8-pin TSSOP Package
  • Low power CMOS process Product Description PCS3P2189A is a versatile spread spectrum frequency modulator that generates a low EMI 4x clock at the output. PCS3P2189A offers four selectable centre spread options of ±0.5%,±1.0%,±1.5%,±2.0%, (Refer Spread Deviation Selection Tabnle). PCS3P2189A reduces electromagnetic inte rference (EMI) at the clock source, allowing system wide reduction of EMI of all clock dependent signals. The PCS3P2189A allows significant system cost savings by reducing the number of circuit board layers, ferrite beads, and shielding that are traditionally required to pass EMI regulations. PCS3P2189A has spread spectrum ON/OFF option. The PCS3P2189A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. Application PCS3P2189A is targetted for LCD panel application Block Diagram ModOUT CLKIN / XIN VSS Frequency Divider Feedback Divider Modulation Phase Detector Loop Filter VCO Output Divider PLL VDD XOUT Crystal Oscillator S0 SSON S1

rev 0.2 Spread Spectrum Clock Generator 2 of 7 Notice: The information in this document is subject to change without notice. Pin Configuration Pin Description Pin# Pin Name Type Description

1 CLKIN / XIN I Crystal connection or External reference Clock Input

2 XOUT O Crystal connection. If using an external reference, this pin must be left unconnected. 3 SSON I Modulation enables pin. When HIGH enables spread spectrum modulation. Has an Internal pull up resistor 4 S1 I Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. 5 S0 O Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. 6 VSS P Ground Connection. Connect to system ground. 7 ModOUT O Low EMI 4x clock output. 8 VDD P Power Supply Voltage Pin. Connect to +3.3V. Spread Deviation Selection Table (For an Input CLK=15MHz) S1 S0 Deviation (± %) 0 0 0.5 0 1 1.0 1 0 1.5 1 1 2.0 Modulation Enable Setting Table SSON Modulation L No Modulation H Modulation 4 5 PCS3P2189A CLKIN / XIN XOUT ModOUT VSS SSON VDD

rev 0.2 Spread Spectrum Clock Generator 3 of 7 Notice: The information in this document is subject to change without notice. Absolute Maximum Ratings Symbol Parameter Rating Unit VDD Supply Voltage pin with respect to Ground -0.5 to +4.6 V VIN Input Voltage pin with respec t to Ground VSS-0.5 to VDD+0.5 V VOUT Output Voltage pin with respect to Ground VSS-0.5 to VDD+0.5 V TSTG Storage temperature -55 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. 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 -50 µA IIH Input high current +50 µA VOL Output low voltage I OL = 4mA VSS 0.4 V VOH Output high voltage I OH = -4mA 2.4 VDD V ICC Dynamic supply current (Unloaded Output) 7 14 20 mA IDD Static supply current standby, CLKIN/XIN pulled LOW 6 mA VDD Operating volt age 3.0 3.3 3.6 V tON Power up time (first locked clo ck cycle after power up) 2 5 mS ZOUT Clock output impedance 50 Ω CIN Input Capacitance 5 pF CL Load Capacitance 15 pF

rev 0.2 Spread Spectrum Clock Generator 4 of 7 Notice: The information in this document is subject to change without notice. Symbol Parameter Min Typ Max Unit XIN/CLKIN Input Clock frequency 10 15 25 MHz ModOUT Output Modulated Clock frequency 40 60 100 MHz MF Modulation Frequency 26 39 65 KHz tLH* Output rise time ( Measured from 20% to 80% ) 2 2.5 nS tHL* Output fall time ( Measured from 80% to 20% ) 1.5 2 nS tJC Cycle to Cycle Ji tter ±250 ±325 tJP Period Jitter (With SSOFF) ±200 ±250 pS tD Output duty cycle 45 50 55 % *tLH and tHL are measured with a capacitive load of 15pF Typical Crystal Oscillator Circuit Typical Crystal Specifications Fundamental AT cut parallel resonant crystal Nominal frequency 15MHz Frequency tolerance ± 50 ppm or better at 25°C Operating temperature range -25°C to +85°C Storage temperature -40°C to +85°C Load capacitance 18pF Shunt capacitance 7pF maximum ESR 25 Ω R1 = 510Ω C1 C2

rev 0.2 Spread Spectrum Clock Generator 5 of 7 Notice: The information in this document is subject to change without notice. E H A D B C L θ e

Package Information

Mechanical Package Outline 8-Pin TSSOP 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° Note: Controlling dimensions are millimeters TSSOP – 0.034 grams unit weight

rev 0.2 Spread Spectrum Clock Generator 6 of 7 Notice: The information in this document is subject to change without notice. Ordering Code Part Number Marking Package Type Temperature PCS3P2189AG-08TT 3P2189AG 8-Pin TSSOP, TUBE, Green Commercial PCS3P2189AG-08TR 3P2189AG 8-Pin TSSOP, TAPE & REEL, Green Commercial PCS3I2189AG-08TT 3I2189AG 8-Pin TSSOP, TUBE, Green Industrial PCS3I2189AG-08TR 3I2189AG 8-Pin TSSO P, TAPE & REEL, Green Industrial Device Ordering Information PCS3P2189AG-08TR Licensed under U.S Patent Nos 5,488,627 and 5,631,921 O = SOT U = MSOP S = SOIC E = TQFP T = TSSOP L = LQFP A = SSOP U = MSOP V = TVSOP P = PDIP B = BGA D = QSOP Q = QFN X = SC-70 DEVICE PIN COUNT X= Automotive I= Industrial P or n/c = Commercial (-40C to +125C) (-40C to +85C) (0C to +70C) 1 = Clock Generator 6 = Power Management 2 = Non PLL based 7 = Power Management 3 = EMI Reduction 8 = Power Management 4 = DDR support products 9 = Hi Performance 5 = STD Zero Dela y Buffer 0 = Reserved PulseCore Semiconductor Mixed Signal Product PART NUMBER G = GREEN PACKAGE, LEAD FREE, and RoHS R = Tape & Reel, T = Tube or Tray

rev 0.2 Spread Spectrum Clock Generator 7 of 7 Notice: The information in this document is subject to change without notice. © Copyright 2006 PulseCore Semiconductor Cor poration. All rights reserved. Our logo and name are trademarks or registered trade marks of PulseCore Semiconductor. All other 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 that may appear in this document. The data contained herein repres ents PulseCore’s best data and/or estimates at the time of is suance. PulseCore reserves the right to change or correct this data at any time, without notice. If the product described herein is und er development, significant changes to these s pecifications 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. PulseCore does not assume any responsibility or liability arising out of the application or use of any product descri bed herein, and disclaims any express or implied warranties related to the sale and/or use of PulseCore products including liability or warrant ies related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agree d to in PulseCore’s Terms and Conditions of Sale (whi ch are available from PulseCore). All sa les of PulseCore products are made exclusi vely according to PulseCore’s Terms and Conditions of Sale. The purc hase of products from PulseCor e does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property right s of PulseCore or third parti es. PulseCore does not authorize its products for use as critical components in life-supporting system s where a malfunction or failure may re asonably be expected to result in significant injury to the user, and the inclusion of PulseCore products in such life-supporting systems i mplies 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: PCS3P2189A Document Version: 0.2 Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003 Many PulseCore Semiconductor products are protected by issued patents or by applications for patent