P1727 April 2007 rev 0.2 Low Power Notebook LCD Panel EMI Reduction IC Features • FCC approved method of EMI attenuation significant system cost savings by reducing the number • Generates a low EMI spread spectrum of of circuit board layers and shielding that are traditionally the input clock frequency required to pass EMI regulations. • Optimized for frequency range: P1727X: 20MHz to 40MHz The P1727 modulates the output of a single PLL in • Internal loop filter minimizes external order to “spread” the bandwidth of a synthesized clock, components and board space thereby • 8 different frequency deviations ranging decreasing the peak amplitudes of its harmonics. This result in significantly lower system EMI from +/-0.625% to –3.50% compared to the typical narrow band signal produced • Low inherent Cycle-to-cycle jitter by oscillators and most clock generators. Lowering EMI • 3.3V Operating Voltage by increasing a signal’s bandwidth is called “spread • Supports notebook VGA and other LCD spectrum clock generation”. timing controller applications The P1727 uses the most efficient and optimized • Available in 8 pin SOIC and TSSOP modulation profile approved by the FCC and is • Qualified for Industrial Temp Spec. implemented by using a proprietary all-digital method. (-40°C to +85°C) Applications Product Description The P1727 is a versatile spread spectrum The P1727 is targeted towards notebook LCD displays, frequency modulator designed specifically for a wide other displays using an LVDS interface, PC peripheral range of clock frequencies. The P1727 reduces devices and embedded systems. electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of down stream (clock and data dependent signals). The P1727 allows Block Diagram PDB VDD PLL Modulation CLKIN Frequency Divider Feedback Divider Phase Detector Loop Filter VCO Output Divider ModOUT REFOUT VSS PulseCore Semiconductor 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. P1727 April 2007 rev 0.2 Pin Configuration CLKIN 1 VDD 2 VSS 8 PDB 7 NC 3 6 NC ModOUT 4 5 REFOUT P1727 Table 1 – Power Down Selection PDB Spread Spectrum ModOUT PLL Mode 0 N/A Disabled Disabled Power Down 1 ON Normal Normal Normal Table 2 Frequency Deviation Selection P/ N Deviation P/N Deviation P1727A -1.25% P1727E +/-0.625% P1727B -1.75% P1727F +/-0.875% P1727C -2.50% P1727G +/-1.25% P1727D -3.50% P1727H +/-1.75% Pin Description Pin# Pin Name Type Description 1 CLKIN I External reference frequency input. Connect to externally generated reference signal. 2 VDD P Connect to +3.3V 3 VSS P Ground Connection. Connect to system ground. 4 ModOUT O Spread Spectrum Clock output 5 REFOUT O Reference output. 6 NC No connect 7 NC No connect 8 PDB I Powerdown Pin.Pull low to disable spread spectrum clock output. Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 2 of 9 P1727 April 2007 rev 0.2 Schematic for notebook VGA application 27MHz Pixel Clock input VDD CLKIN 2 VDD 3 VSS 4 ModOUT 0.1 µF ModOut Clock PDB 8 1 P1727 Tie low to enable Powerdown mode. NC 7 NC 6 REFOUT 5 Reference Clock O/P Absolute Maximum Ratings Symbol Parameter VDD, VIN Voltage on any pin with respect to Ground TSTG Storage temperature Rating Unit -0.5 to +7 V -65 to +125 °C Ts Max. Soldering Temperature (10 sec) 260 °C TJ Junction Temperature 150 °C 2 KV TDV Static Discharge Voltage (As per JEDEC STD22- A114-B) 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. Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 3 of 9 P1727 April 2007 rev 0.2 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 VOL Output Low current VDD = 3.3V, IOL = 20mA 0.4 V VOH Output High current VDD = 3.3V, IOH = 20mA IDD Static Supply Current (CLKIN, PDB pulled Low) ICC Dynamic Supply Current (No Load) VDD Operating Voltage tON Power up time (first locked clock cycle after power up) ZOUT TA 2.5 V 3.0 Clock Output impedance Operating temperature 2 mA 14 18 mA 3.3 3.6 V 0.18 mS 50 Ω 0 70 °C AC Electrical Characteristics Symbol Parameter Min Typ Unit 40 MHz fIN Input Frequency: P1727X fOUT Output Frequency P1727X 20 40 MHz tLH1 Output Rise time Measured from 0.8V to 2.0V 0.7 0.9 1.1 nS Output Fall time Measured from 2.0V to 0.8V 0.6 0.8 1.0 nS 225 325 pS 50 55 % tHL 1 tJC Jitter (Cycle to cycle) tD Output Duty cycle 20 Max 45 Note: 1. tLH and tHL are measured with a capacitive load of 15pF Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 4 of 9 P1727 April 2007 rev 0.2 Package Information 8-lead (150-mil) SOIC Package H E D A2 A C A1 D θ e L B Dimensions Symbol Inches Min Max Millimeters 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° Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 5 of 9 P1727 April 2007 rev 0.2 8-lead Thin Shrunk Small Outline Package (4.40-MM Body) 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° Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 6 of 9 P1727 April 2007 rev 0.2 Ordering Information Part number Marking Package Configuration Temperature Range P1727AG-08ST P1727AG 8 PIN SOIC, TUBE, Green Commercial P1727AG-08SR P1727AG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727AG-08TT P1727AG 8 PIN TSSOP, TUBE, Green Commercial P1727AG-08TR P1727AG 8 PIN TSSOP, TAPE & REEL, Green Commercial P1727BG-08ST P1727BG 8 PIN SOIC, TUBE, Green Commercial P1727BG-08SR P1727BG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727BG-08TT P1727BG 8 PIN TSSOP, TUBE, Green Commercial P1727BG-08TR P1727BG 8 PIN TSSOP, TAPE & REEL, Green Commercial P1727CG-08ST P1727CG 8 PIN SOIC, TUBE, Green Commercial P1727CG-08SR P1727CG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727CG-08TT P1727CG 8 PIN TSSOP, TUBE, Green Commercial P1727CG-08TR P1727CG 8 PIN TSSOP, TAPE & REEL, Green Commercial P1727DG-08ST P1727DG 8 PIN SOIC, TUBE, Green Commercial P1727DG-08SR P1727DG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727DG-08TT P1727DG 8 PIN TSSOP, TUBE, Green Commercial P1727DG-08TR P1727DG 8 PIN TSSOP, TAPE & REEL, Green Commercial P1727EG-08ST P1727EG 8 PIN SOIC, TUBE, Green Commercial P1727EG-08SR P1727EG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727EG-08TT P1727EG 8 PIN TSSOP, TUBE, Green Commercial P1727EG-08TR P1727EG 8 PIN TSSOP, TAPE & REEL, Green Commercial P1727FG-08ST P1727FG 8 PIN SOIC, TUBE, Green Commercial P1727FG-08SR P1727FG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727FG-08TT P1727FG 8 PIN TSSOP, TUBE, Green Commercial P1727FG-08TR P1727FG 8 PIN TSSOP, TAPE & REEL, Green Commercial P1727GG-08ST P1727GG 8 PIN SOIC, TUBE, Green Commercial P1727GG-08SR P1727GG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727GG-08TT P1727GG 8 PIN TSSOP, TUBE, Green Commercial P1727GG-08TR P1727GG 8 PIN TSSOP, TAPE & REEL, Green Commercial P1727HG-08ST P1727HG 8 PIN SOIC, TUBE, Green Commercial P1727HG-08SR P1727HG 8 PIN SOIC, TAPE & REEL, Green Commercial P1727HG-08TT P1727HG 8 PIN TSSOP, TUBE, Green Commercial P1727HG-08TR P1727HG 8 PIN TSSOP, TAPE & REEL, Green Commercial Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 7 of 9 P1727 April 2007 rev 0.2 Device Ordering Information P 1 7 2 7 X G 0 8 - X X SR - SOIC, T/R TT – TSSOP, TUBE TR - TSSOP, T/R ST – SOIC, TUBE Pin Count F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS Deviation (%) and Spread option Identifier DEVICE NUMBER Flow: P = Commercial Temperature Range (0°C to 70°C) I = Industrial Temperature Range (-40°C to 85°C) Licensed under US patent #5,488,627, #6,646,463 and #5,631,920. Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 8 of 9 P1727 April 2007 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: P1727 Document Version: 0.2 Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003 © 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. Low Power Notebook LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 9 of 9