P1819 November 2005 rev 1.7 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. 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’. 3.3V ± 0.3V Operating Voltage range. 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. are traditionally required to pass EMI regulations. 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 Block Diagram VDD D_C/NC PD# SRS PLL Modulation XIN/CLKIN Crystal Oscillator XOUT Frequenc y Feedback Divider Phase Detector Loop Filter VCO Output Divider ModOUT REF VSS Alliance Semiconductor 2575 Augustine Drive • Santa Clara, CA • Tel: 408.855.4900 • Fax: 408.855.4999 • www.alsc.com Notice: The information in this document is subject to change without notice. P1819 November 2005 rev 1.7 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 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 LOW to enable PowerDown mode. This pin has an internal pull-up resistor. SRS I 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 Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 2 of 9 P1819 November 2005 rev 1.7 Input Frequency and Modulation Rate Part Number Input Frequency Range Output Frequency range Modulation rate P1819 20MHz to 40MHz 20MHz to 40MHz Input Frequency / 512 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 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 TA 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 9 P1819 November 2005 rev 1.7 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 IXOL XOUT Output low current @ 0.4V, VDD = 3.3V 2.0 - 12.0 mA 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 VOH Output High voltage VDD = 3.3V, IOH = 20mA 2.5 - - V ICC Dynamic supply current normal mode 3.3V and 25pF probe loading 7.1 fIN - min - 26.9 fIN - max mA IDD Static supply current standby mode - 4.5 - mA VDD Operating Voltage 3.0 3.3 3.6 V tON Power up time (first locked clock cycle after power up) - 0.18 - mS ZOUT Clock Output impedance - 50 - Ω AC Electrical Characteristics Symbol Min Typ Max Unit fIN Input Frequency Parameter 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 Jitter (cycle to cycle) -200 - 200 pS tD Output Duty cycle 45 50 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 9 P1819 November 2005 rev 1.7 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° 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 9 P1819 November 2005 rev 1.7 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° 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 9 P1819 November 2005 rev 1.7 Ordering Codes Marking Input Frequency (MHz) Frequency Deviation (%) P1819A-08ST P1819A 20-40 -2.5,-3.5 P1819A-08SR P1819A 20-40 -2.5,-3.5 P1819A-08TT P1819A 20-40 -2.5,-3.5 P1819A-08TR P1819A 20-40 -2.5,-3.5 P1819AF-08ST P1819AF 20-40 -2.5,-3.5 P1819AF-08SR P1819AF 20-40 -2.5,-3.5 P1819AF-08TT P1819AF 20-40 -2.5,-3.5 P1819AF-08TR P1819AF 20-40 -2.5,-3.5 P1819AG-08ST P1819AG 20-40 -2.5,-3.5 P1819AG-08SR P1819AG 20-40 -2.5,-3.5 P1819AG-08TT P1819AG 20-40 -2.5,-3.5 P1819AG-08TR P1819AG 20-40 -2.5,-3.5 P1819B-08ST P1819B 20-40 -1.25, -1.75 P1819B-08SR P1819B 20-40 -1.25, -1.75 P1819B-08TT P1819B 20-40 -1.25, -1.75 P1819B-08TR P1819B 20-40 -1.25, -1.75 P1819BF-08ST P1819BF 20-40 -1.25, -1.75 P1819BF-08SR P1819BF 20-40 -1.25, -1.75 P1819BF-08TT P1819BF 20-40 -1.25, -1.75 P1819BF-08TR P1819BF 20-40 -1.25, -1.75 P1819BG-08ST P1819BG 20-40 -1.25, -1.75 P1819BG-08SR P1819BG 20-40 -1.25, -1.75 P1819BG-08TT P1819BG 20-40 -1.25, -1.75 P1819BG-08TR P1819BG 20-40 -1.25, -1.75 Part Number Package Type 8-pin SOIC, tube 8-pin SOIC, tape & reel 8-pin TSSOP, tube 8-pin TSSOP, tape and reel 8-pin SOIC, tube 8-pin SOIC, tape & reel 8-pin TSSOP, tube 8-pin TSSOP, tape and reel 8-pin SOIC, tube 8-pin SOIC, tape & reel 8-pin TSSOP, tube 8-pin TSSOP, tape and reel 8-pin SOIC, tube 8-pin SOIC, tape & reel 8-pin TSSOP, tube 8-pin TSSOP, tape and reel 8-pin SOIC, tube 8-pin SOIC, tape & reel 8-pin TSSOP, tube 8-pin TSSOP, tape and reel 8-pin SOIC, tube 8-pin SOIC, tape & reel 8-pin TSSOP, tube 8-pin TSSOP, tape and reel Qty / reel Pb Free Temperature 0°C to 70°C 2500 0°C to 70°C 0°C to 70°C 2500 2500 2500 2500 2500 0°C to 70°C Pb Free 0°C to 70°C Pb Free 0°C to 70°C Pb Free 0°C to 70°C Pb Free 0°C to 70°C Green 0°C to 70°C Green 0°C to 70°C Green 0°C to 70°C Green 0°C to 70°C 0°C to 70°C 2500 0°C to 70°C 0°C to 70°C 2500 2500 2500 2500 2500 0°C to 70°C Pb Free 0°C to 70°C Pb Free 0°C to 70°C Pb Free 0°C to 70°C Pb Free 0°C to 70°C Green 0°C to 70°C Green 0°C to 70°C Green 0°C to 70°C Green 0°C to 70°C Products are available for industrial temperature range operation. Please contact factory for more information. Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 7 of 9 P1819 November 2005 rev 1.7 Device Ordering Information 1. X 1819 X X -08 XX 1 2 3 4 5 6 2. 3. 4. 5. 6. Flow Prefix: a. I = Industrial temperature range (-40°C to 85°C). b. P = Commercial temperature range (0°C to 70°C). P 1 8 1 9 A Device Number. Deviation (%) and spread option identifier. Lead Free parts Device pin count. Package Identifier. F - 0 8 X X 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 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. Note Book LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 8 of 9 P1819 November 2005 rev 1.7 Alliance Semiconductor Corporation 2575 Augustine Drive, Santa Clara, CA 95054 Tel# 408-855-4900 Fax: 408-855-4999 www.alsc.com Copyright © Alliance Semiconductor All Rights Reserved Preliminary Information Part Number: P1819 Document Version: v1.7 Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to Alliance Semiconductor, dated 11-11-2003 © Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance 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. Alliance 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 Alliance 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 Alliance's Terms and Conditions of Sale (which are available from Alliance). All sales of Alliance products are made exclusively according to Alliance's Terms and Conditions of Sale. The purchase of products from Alliance does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of Alliance or third parties. Alliance 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 Alliance products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify Alliance 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. 9 of 9