P1819 March 2007 rev 1.9 Notebook LCD Panel EMI Reduction IC Features ferrite beads, shielding and other passive components that • FCC approved method of EMI attenuation. • Provides up to 15dB EMI reduction. • are traditionally required to pass EMI regulations. Generates a low EMI Spread Spectrum clock and a The P1819 modulates the output of a single PLL in order to non-spread reference clock of the input frequency. “spread” the bandwidth of a synthesized clock, and more • Optimized for Frequency range from 20 to 40MHz. importantly, • Internal loop filter minimizes external components harmonics. This results in significantly lower system EMI and board space. compared to the typical narrow band signal produced by • Selectable spread options: Down and Center. oscillators and most frequency generators. Lowering EMI • Low Inherent Cycle-to-Cycle jitter. by increasing a signal’s bandwidth is called ‘Spread • Eight spread % selections: ±0.625% to –3.5%. Spectrum Clock Generation’. • ModRate is compliant with ATI M7x VGA spec. The P1819 is available in different spread deviation, refer • 3.3V ± 0.3V Operating Voltage range. to “Spread Deviation Selection” Table. • Low power CMOS design. The P1819 uses the most efficient and optimized • Supports notebook VGA and other LCD timing modulation controller applications. implemented in a proprietary all digital method. • Power Down function for mobile application. • Available in Commercial temperature range. • Available in 8-pin SOIC and TSSOP Packages. The P1819 is a Versatile Spread Spectrum Frequency Modulator designed specifically for input clock frequencies from 20 to 40MHz. (Refer Input Frequency and Modulation Table). The P1819 reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of profile the peak approved by amplitudes the FCC of its and is Applications Product Description Rate decreases The P1819 is targeted towards EMI management for memory and LVDS interfaces in mobile graphic chipsets and high-speed digital applications such as PC peripheral devices, consumer electronics, and embedded controller systems. down stream clock and data dependent signals. The P1819 allows significant system cost savings by reducing the number of circuit board layers VDD D_C/NC PD# SRS Block Diagram PLL Modulation XIN/CLKIN Crystal Oscillator XOUT Frequency Divider Feedback Divider Phase Detector Loop Filter VCO Output Divider ModOUT REF 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. P1819 March 2007 rev 1.9 Pin Configuration 8 XOUT 7 3 4 XIN/ CLKIN 1 VSS 2 SRS ModOUT P1819 A/B/C/D 8 XOUT 7 VDD 3 6 PD# 4 5 REF XIN / CLKIN 1 VDD VSS 2 6 PD# D_C / NC 5 REF ModOUT P1819 E/F/G/H/Q Pin Description Pin# Pin Name Type 1 XIN / CLKIN I 2 VSS P 1819A/B/C/D 1819E/F/G/H/Q 1 2 3 SRS I Description Crystal Connection or external frequency input.This pin has dual functions. It can be connected to either an external crystal or an external reference clock Ground Connection. Connect to system ground. Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Selection Table). This pin has an internal pull-up resistor. Digital logic input used to select Down (LOW) or Center (HIGH) spread options (Refer Spread Deviation Selection Table). This pin has an internal pull-up resistor. Spread spectrum clock output. (Refer Input Frequency and Modulation Rate Table and Spread Deviation Selection Table) Non-modulated Reference clock output of the input frequency. Power down control pin. Pull XIN/CLKIN and PD# LOW to enable Power-Down mode. This pin has an internal pull-up resistor. 3 3 D_C / NC I 4 4 ModOUT O 5 5 REF O 6 6 PD# I 7 7 VDD P Power Supply for the entire chip. 8 8 XOUT O Crystal Connection. Input connection for an external crystal. If using an external reference, this pin must be left unconnected. Note: Pin 3 is NC in P1819Q Input Frequency and Modulation Rate Part Number Input Frequency Range Output Frequency range Modulation rate P1819 20MHz to 40MHz 20MHz to 40MHz Input Frequency / 896 Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 2 of 8 P1819 March 2007 rev 1.9 Spread Deviation Selection Part Number SRS 0 P1819A 1 0 P1819B 1 0 P1819C 1 0 P1819D 1 P1819E NA P1819F NA P1819G NA P1819H NA P1819Q NA D_C NA NA NA NA Spread Deviation -2.50% (DOWN) -3.50% (DOWN) -1.25% (DOWN) -1.75% (DOWN) ±1.25% (CENTER) ±1.75% (CENTER) ±0.625% (CENTER) ±0.875% (CENTER) 0 -1.25% (DOWN) 1 ±0.625% (CENTER) 0 -2.5% (DOWN) 1 ±1.25% (CENTER) 0 -1.75% (DOWN) 1 ±0.875% (CENTER) 0 -3.5% (DOWN) 1 ±1.75% (CENTER) NA -2.5% (DOWN) Absolute Maximum Ratings Symbol Parameter VDD, VIN TSTG TA Rating Unit Voltage on any pin with respect to Ground -0.5 to +7.0 V Storage temperature -65 to +125 °C 0 to 70 °C Operating temperature 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. Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 3 of 8 P1819 March 2007 rev 1.9 DC Electrical Characteristics (Test condition: All parameters are measured at room temperature (+25°C) unless otherwise stated) 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 (inputs D_C, PD#, SRS) -60.0 -20.0 µA IIH Input High current 1.0 µA 12.0 mA IXOL XOUT Output low current @ 0.4V, VDD = 3.3V 2.0 IXOH XOUT Output high current @ 2.5V, VDD = 3.3V 12.0 mA VOL Output Low voltage VDD = 3.3V, IOL = 20mA 0.4 V V VOH Output High voltage VDD = 3.3V, IOH = 20mA 2.5 - ICC Dynamic supply current normal mode 3.3V and 25pF probe loading 7.1 26.9 fIN - min fIN - max IDD Static supply current standby mode VDD Operating Voltage tON Power up time (first locked clock cycle after power up) ZOUT mA 4.5 3.0 mA 3.3 Clock Output impedance 3.6 V 0.18 mS 50 Ω AC Electrical Characteristics Symbol fIN Parameter Min Typ Max Unit Input Frequency 20 40 MHz fOUT Output Frequency 20 40 MHz tLH* Output Rise time Measured from 0.8V to 2.0V 0.66 nS tHL* Output Fall time Measured from 2.0V to 0.8V 0.65 nS tJC tLTJ tD Jitter (cycle to cycle) Long Term Jitter,(1000 cycle) on Refout @ 27MHz Output Duty cycle -200 200 475 45 50 pS pS 55 % *tLH and tHL are measured into a capacitive load of 15pF Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 4 of 8 P1819 March 2007 rev 1.9 Package Information 8-Pin 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° Note: Controlling dimensions are millimeters SOIC – 0.074 grams unit weight Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 5 of 8 P1819 March 2007 rev 1.9 8-Pin TSSOP Package 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 – 0.0325 grams unit weight Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 6 of 8 P1819 March 2007 rev 1.9 Ordering Codes Part Number Marking Package Type Temperature P1819XF-08ST P1819XF 8-pin SOIC, tube Commercial P1819XF-08SR P1819XF 8-pin SOIC, tape & reel Commercial P1819XF-08TT P1819XF 8-pin TSSOP, tube Commercial P1819XF-08TR P1819XF 8-pin TSSOP, tape & reel Commercial P1819XG-08ST P1819XG 8-pin SOIC, tube Commercial P1819XG-08SR P1819XG 8-pin SOIC, tape & reel Commercial P1819XG-08TT P1819XG 8-pin TSSOP, tube Commercial P1819XG-08TR P1819XG 8-pin TSSOP, tape & reel Commercial Products are available for industrial temperature range operation. Please contact factory for more information. Note: X=A/B/C/D/E/F/G/H/Q Device Ordering Information P 1 8 1 9 X G - 0 8 T R SR - SOIC, T/R TT – TSSOP, TUBE TR - TSSOP, T/R ST – SOIC, TUBE Pin Count F =Lead Free and 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) Note: X=A/B/C/D/E/F/G/H/Q Licensed under US patent #5,488,627, #6,646,463 and #5,631,920. Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 7 of 8 P1819 March 2007 rev 1.9 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: P1819 Document Version: v1.9 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. Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 8 of 8