PCS3P2189A May 2008 rev 0.2 Spread Spectrum Clock Generator Product Description Features • PCS3P2189A is a versatile spread spectrum frequency Generates a 4X low EMI spread spectrum clock of modulator that generates a low EMI 4x clock at the the input frequency. output. PCS3P2189A offers four • Input frequency: 10MHz - 25MHz • Output frequency: 40MHz - 100MHz • Internal loop filter minimizes external components options Spread Deviation of ±0.5%,±1.0%,±1.5%,±2.0%,(Refer Selection Tabnle). PCS3P2189A reduces electromagnetic interference (EMI) at the clock and board space. • spread selectable centre source, allowing system wide reduction of EMI of Selectable Centre Spread frequency deviation: clock ±0.5%, ± 1.0%, ± 1.5%, ± 2.0% all dependent signals. The PCS3P2189A allows significant system cost savings by reducing the number • Supply Voltage :3.3V ± 0.3V • Commercial and Industrial temperature range • 8-pin TSSOP Package PCS3P2189A has spread spectrum ON/OFF option. • Low power CMOS process The PCS3P2189A uses the most efficient and optimized of circuit board layers, ferrite beads, and shielding that are traditionally required to pass EMI regulations. 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 S0 S1 SSON VDD PLL Modulation CLKIN / XIN XOUT Crystal Oscillator Frequency Divider Feedback Divider Phase Detector Loop Filter VCO Output Divider ModOUT VSS PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018 www.pulsecoresemi.com Notice: The information in this document is subject to change without notice. PCS3P2189A May 2008 rev 0.2 Pin Configuration 8 VDD 7 ModOUT SSON 3 6 VSS S1 4 5 S0 CLKIN / XIN 1 XOUT 2 PCS3P2189A Pin Description Pin# Pin Name Type 1 CLKIN / XIN I Description Crystal connection or External reference Clock Input Crystal connection. If using an external reference, this pin must be left unconnected. Modulation enables pin. When HIGH enables spread spectrum modulation. Has an Internal pull up resistor Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. 2 XOUT O 3 SSON I 4 S1 I 5 S0 O 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 Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 2 of 7 PCS3P2189A May 2008 rev 0.2 Absolute Maximum Ratings Symbol Parameter Rating Unit -0.5 to +4.6 V Input Voltage pin with respect 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 VDD Supply Voltage pin with respect to Ground VIN -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. DC Electrical Characteristics 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 IOL = 4mA VSS 0.4 V VOH Output high voltage IOH = -4mA 2.4 VDD V ICC Dynamic supply current (Unloaded Output) 20 mA IDD Static supply current standby, CLKIN/XIN pulled LOW 6 mA 3.3 3.6 V Power up time (first locked clock cycle after power up) 2 5 mS Clock output impedance 50 Ω CIN Input Capacitance 5 pF CL Load Capacitance VDD tON ZOUT Operating voltage 7 3.0 14 15 Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. pF 3 of 7 PCS3P2189A May 2008 rev 0.2 AC Electrical Characteristics Symbol XIN/CLKIN ModOUT Parameter Min Typ Max Unit Input Clock frequency 10 15 25 MHz 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 Jitter ±250 ±325 tJP Period Jitter (With SSOFF) ±200 ±250 tD Output duty cycle 50 55 45 pS % *tLH and tHL are measured with a capacitive load of 15pF Typical Crystal Oscillator Circuit R1 = 510Ω C1 C2 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 25Ω Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 4 of 7 PCS3P2189A May 2008 rev 0.2 Package Information Mechanical Package Outline 8-Pin TSSOP H E D A2 A C θ e A1 L B Dimensions Symbol Inches Min Millimeters Max A Min Max 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 Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 5 of 7 PCS3P2189A May 2008 rev 0.2 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 TSSOP, TAPE & REEL, Green Industrial Device Ordering Information P C S 3 P 2 1 8 9 A G - 0 8 T R R = Tape & Reel, T = Tube or Tray O = SOT S = SOIC T = TSSOP A = SSOP V = TVSOP B = BGA Q = QFN U = MSOP E = TQFP L = LQFP U = MSOP P = PDIP D = QSOP X = SC-70 DEVICE PIN COUNT G = GREEN PACKAGE, LEAD FREE, and RoHS PART NUMBER X= Automotive I= Industrial P or n/c = Commercial (-40C to +125C) (-40C to +85C) (0C to +70C) 1 = Clock Generator 2 = Non PLL based 3 = EMI Reduction 4 = DDR support products 5 = STD Zero Delay Buffer 6 = Power Management 7 = Power Management 8 = Power Management 9 = Hi Performance 0 = Reserved PulseCore Semiconductor Mixed Signal Product Licensed under U.S Patent Nos 5,488,627 and 5,631,921 Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 6 of 7 PCS3P2189A May 2008 rev 0.2 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 © Copyright 2006 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks 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 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 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. PulseCore 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 PulseCore 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 PulseCore’s Terms and Conditions of Sale (which are available from PulseCore). All sales of PulseCore products are made exclusively 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 intellectual property rights of PulseCore or third parties. 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 PulseCore 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. Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 7 of 7