PCS3P2191A May 2008 rev 0.3 Spread Spectrum Clock Generator Features output. PCS3P2191A offers seven selectable centre • Generates four 4x low EMI spread spectrum clocks • Input frequency: 10MHz - 25MHz • Output frequency: 40MHz - 100MHz • Internal loop filter minimizes external components spread options of ±0.5% to ±2.0%, and a no spread option. Commercial and Industrial temperature range • 16-pin TSSOP Package • Advanced low power CMOS process Table). interference number of circuit board layers, ferrite beads, and shielding that are traditionally required to pass EMI ± 1.25%, ± 1.5%, ± 1.75% ± 2.0% • Selection allows significant system cost savings by reducing the ±0.5%, ±0.75%, ± 1.0%, Supply Voltage :3.3V ± 0.3V Deviation electromagnetic of EMI of all clock dependent signals. The PCS3P2191A Selectable Centre Spread frequency deviation: • Spread reduces (EMI) at the clock source, allowing system wide reduction and board space • (Refer PCS3P2191A regulations. The PCS3P2191A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. The Device is available in 16 Pin TSSOP package, in Commercial and Industrial temperature range. Product Description Application PCS3P2191A is a versatile spread spectrum frequency PCS3P2191A is targetted for LCD panel application modulator that generates four low EMI 4x clocks at the 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 CLK[1:4] 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 May 2008 rev 0.3 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 P Power Supply Voltage Pin. Connect to +3.3V. 2 GND P Ground Connection. Connect to system ground. 3 S2 I Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. 4 GND P Ground Connection. Connect to system ground. 5 CLK1 O Low EMI 4x clock output. 6 CLK2 O Low EMI 4x clock output. 7 GND P Ground Connection. Connect to system ground. 8 XIN/CLKIN I Crystal connection or external reference clock input 9 XOUT O 10 GND P Crystal connection. If using an external reference, this pin must be left unconnected. Ground Connection. Connect to system ground. 11 CLK3 O Low EMI 4x clock output. 12 CLK4 O Low EMI 4x clock output. 13 GND P 14 S1 I 15 S0 I 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. 16 VDD P 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 May 2008 rev 0.3 Spread Deviation Selection Table (For an Input CLK=15MHz) S2 S1 S0 Deviation (± %) 0 0 0 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 Parameter Rating Unit -0.5 to +4.6 V VDD Supply Voltage pin with respect to Ground VIN 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 -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. Recommended Operating Conditions Parameter Description Min Typ 3.3 VDD Operating Voltage 3.0 TA Operating Temperature -40 CL Load Capacitance CIN Input Capacitance 5 Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. Max Unit 3.6 V +85 °C 15 pF pF 3 of 8 PCS3P2191A May 2008 rev 0.3 DC Electrical Characteristics (TA=-40°C to +85°C, VDD =3.3V ± 0.3V) 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 IIH Input high current -35 (XIN / CLKIN) +35 IIL Input low current IIH Input high current -50 VOL Output low voltage IOL = 12mA VSS VOH Output high voltage IOH = -12mA 2.4 ICC Dynamic supply current ( Unloaded Outputs) (S0:S1:S2) IDD Static supply current standby mode* VDD Operating voltage tON ZOUT CIN CL Power up time (first locked clock cycle after power up)** Clock output impedance Input Capacitance Load Capacitance +50 0.4 µA µA V VDD V 8 15 26 mA 8 mA 3.0 3.3 3.6 V 5 15 mS Ω pF pF 27 5 *CLKIN pulled Low **VDD and CLKIN inputs are stable AC Electrical Characteristics (TA=-40°C to +85°C, VDD =3.3V ± 0.3V) Symbol XIN/ CLKIN CLKOUT FMOD Parameter Input Clock frequency Output Clock frequency (Pin 5,6,11,12) Spread Spectrum Modulation Rate Min Typ Max Unit 10 15 25 MHz 40 60 100 MHz 26 39 65 KHz tLH* Output rise time ( Measured from 20% to 80% ) 1.5 2 nS tHL* Output fall time ( Measured from 80% to 20% ) 1.0 1.5 nS Output frequency Synthesis error (With SSOFF) 0 ppm tJC* Cycle to Cycle Jitter ±250 ±325 tJP* Period Jitter (With SSOFF) ±150 ±200 tD* Output duty cycle 50 55 45 pS % *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 May 2008 rev 0.3 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 -45°C to +90°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 May 2008 rev 0.3 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 May 2008 rev 0.3 Ordering Code 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 PCS3I2191AG-16TT 3I2191AG 16-Pin TSSOP, TUBE, Green Industrial PCS3I2191AG-16TR 3I2191AG 16-Pin TSSOP, TAPE & REEL, Green Industrial PCS3I2191AF-16TT 3I2191AF 16-Pin TSSOP, TUBE, Pb Free Industrial PCS3I2191AF-16TR 3I2191AF 16-Pin TSSOP, TAPE & REEL, Pb Free Industrial 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 C=TDFN (2X2) COL 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. 7 of 8 PCS3P2191A May 2008 rev 0.3 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: 0.3 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. 8 of 8