PCS3P2191A January 2007 rev 0.1 Spread Spectrum Clock Generator Features • Generates four 4X low EMI spread spectrum clocks • Input frequency: 15MHz • Output frequency: 60MHz • Internal loop filter minimizes external components offers seven selectable centre spread options of ±0.5% to ±2.0%, and a no spread option. (Refer Spread Deviation Selection Table). PCS3P2191A reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of all clock dependent signals. and board space • The PCS3P2191A allows significant system cost savings Selectable Centre Spread frequency deviation: by reducing the number of circuit board layers, ferrite ±0.5%, ±0.75%, ± 1.0%, beads, and shielding that are traditionally required to ± 1.25%, ± 1.5%, ± 1.75% ± 2.0% • 3.3V ± 0.3V Operating Voltage • Commercial Temperature range • Available in 16-pin TSSOP • Advanced low power CMOS process pass EMI regulations. The PCS3P2191A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. Application Product Description PCS3P2191A is targetted for LCD panel application PCS3P2191A is a versatile spread spectrum frequency modulator that generates four low EMI 4x clocks at the output. PCS3P2191A Block Diagram S2 S1 S0 VDD 2 PLL Modulation CLKIN / XIN XOUT Crystal Oscillator Frequency Divider Feedback Divider Phase Detector Loop Filter VCO Output Divider ModOUT 4 5 GND 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. PCS3P2191A January 2007 rev 0.1 Pin Configuration VDD 1 16 VDD GND 2 15 S0 S2 3 14 S1 GND 4 13 GND CLK1 5 12 CLK4 CLK2 6 11 CLK3 GND 7 10 GND XIN/CLKIN 8 9 XOUT PCS3P2191A 16Pin TSSOP Pin Description Pin# Pin Name Type Description 1 VDD power Power Supply Voltage Pin. Connect to +3.3V. 2 GND power 3 S2 Input 4 5 GND CLK1 power Output Ground Connection. Connect to system ground. Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. Ground Connection. Connect to system ground. Low EMI 4x clock output. 6 CLK2 Output Low EMI 4x clock output. 7 GND power Ground Connection. Connect to system ground. 8 XIN/CLKIN Input Crystal connection or external reference frequency input. It can be connected to a 15MHz fundamental mode crystal. 9 XOUT Output 10 GND power Crystal connection. If using an external reference, this pin must be left unconnected. Ground Connection. Connect to system ground. 11 CLK3 Output Low EMI 4x clock output. 12 CLK4 Output Low EMI 4x clock output. 13 GND power 14 S1 Output 15 S0 Output 16 VDD power Ground Connection. Connect to system ground. 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. Power Supply Voltage Pin. Connect to +3.3V. Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 2 of 8 PCS3P2191A January 2007 rev 0.1 Spread Deviation Selection Table S2 S1 S0 0 0 0 Deviation OFF 0 0 1 ± 0.5% 0 0 1 1 1 1 1 1 0 0 1 1 0 1 0 1 0 1 ± 0.75% ± 1.0% ± 1.25% ± 1.5% ± 1.75% ± 2.0% Absolute Maximum Ratings Symbol VDD VIN VOUT TSTG Parameter Rating Unit -0.5 to +4.6 V Input Voltage pin with respect to Ground VSS-0.5 to VDD+0.5 V Output Voltage pin with respect to Ground VSS-0.5 to VDD+0.5 V Supply Voltage pin with respect to Ground -55 to +125 °C Ts Max. Soldering Temperature (10 sec) Storage temperature 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. Recommended Operating Conditions Parameter VDD Description Operating Voltage TA Operating Temperature (Ambient Temperature) CL Load Capacitance CIN Input Capacitance Min Typ 3.0 3.3 0 5 Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. Max Unit 3.6 V +70 °C 15 pF pF 3 of 8 PCS3P2191A January 2007 rev 0.1 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 -35 µA IIH Input high current +35 µA IXOL XOUT output low current ( VXOL @ 0.4V, VDD = 3.3V) 3 mA IXOH XOUT output high current ( VXOH @ 2.5V, VDD = 3.3V) 3 mA VOL Output low voltage IOL = 12mA VSS 0.4 V VOH Output high voltage IOH = -12mA 2.5 VDD V ICC Dynamic supply current , 60 MHz Output, no load IDD Static supply current standby mode* VDD Operating voltage tON TBD 3.0 3.3 Power up time (first locked clock cycle after power up)** ZOUT Clock output impedance CIN Input Capacitance CL Load Capacitance mA TBD uA 3.6 V 5 mS TBD Ω 5 pF 15 pF Max Unit *CLKIN pulled Low **VDD and CLKIN inputs are stable AC Electrical Characteristics Symbol XIN/ CLKIN CLKOUT Parameter Min Input frequency Output frequency (Pin 5,6,11,12) Typ 15 MHz 60(SS) MHz tLH* Output rise time ( Measured from 20% to 80% ) TBD nS tHL* Output fall time ( Measured from 80% to 20% ) TBD nS tJC* Cycle to cycle Jitter TBD pS tD* Output duty cycle 45 50 55 % *tLH and tHL are measured with a capacitive load of 15pF Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 4 of 8 PCS3P2191A January 2007 rev 0.1 Typical Crystal Oscillator Circuit R1 = 510Ω Crystal 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. 5 of 8 PCS3P2191A January 2007 rev 0.1 Package Information 16-lead Thin Shrunk Small Outline Package (4.40-MM Body) 1 8 PIN 1 ID E 16 A A2 e B A1 Seating Plane C θ D 9 H L D Dimensions Symbol Inches Min Millimeters Max A Min Max 0.043 1.20 A1 0.002 0.006 0.05 0.15 A2 0.031 0.041 0.80 1.05 B 0.007 0.012 0.19 0.30 C 0.004 0.008 0.09 0.20 D 0.193 0.201 4.90 5.10 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 0.030 0.50 0.75 θ 0° 8° 0° 8° Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. 6 of 8 PCS3P2191A January 2007 rev 0.1 Ordering Codes Part Number Marking Package Type Temperature PCS3P2191AG-16TT 3P2191AG 16-Pin TSSOP, TUBE, Green Commercial PCS3P2191AG-16TR 3P2191AG 16-Pin TSSOP, TAPE & REEL, Green Commercial PCS3P2191AF-16TT 3P2191AF 16-Pin TSSOP, TUBE, Pb Free Commercial PCS3P2191AF-16TR 3P2191AF 16-Pin TSSOP, TAPE & REEL, Pb Free Commercial Device Ordering Information P C S 3 P 2 1 9 1 A G - 1 6 T R R = Tape & Reel, T = Tube or Tray O = TSOT23 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 J=TSOT26 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 = Reserved 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. 7 of 8 PCS3P2191A January 2007 rev 0.1 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: PCS3P2191A Document Version: v0.1 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 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. 8 of 8