P2040C November 2006 rev 1.6 LCD Panel EMI Reduction IC Features system wide reduction of EMI of all clock dependent signals. The P2040C allows significant system cost • FCC approved method of EMI attenuation. • Provides up to 15dB of EMI suppression savings by reducing the number of circuit board layers and Generates a low EMI spread spectrum clock of shielding that are traditionally required to pass EMI the input frequency regulations. • • 50MHz to 173MHz input frequency range • Optimized for 54MHz, 65MHz, 81MHz, 140MHz, and 162MHz pixel clock frequencies • Internal loop filter minimizes external components and board space • The P2040C uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all-digital method. The 8 selectable spread ranges, up to ± 2.2% P2040C modulates the output of a single PLL in order to SSON# control pin for spread spectrum enable “spread” the bandwidth of a synthesized clock and, more and disable options importantly, decreases the • 2 selectable modulation rates harmonics. This result in a significantly lower system EMI • Low Cycle-to-cycle jitter • 3.3V Operating Voltage • Ultra low power CMOS design • Supports most mobile graphic accelerator and • compared to the typical narrow band signal produced by oscillators and most frequency generators. Lowering EMI by increasing a signal’s bandwidth is called ‘spread spectrum clock generation’. LCD timing controller specifications • peak amplitudes of its Available in 8 pin SOIC and TSSOP Packages Applications Product Description The P2040C is a selectable spread spectrum frequency modulator designed specifically for digital flat panel applications. The P2040C reduces electromagnetic The P2040C is targeted towards digital flat panel applications for Notebook PCs, Palm-size PCs, Office Automation Equipments and LCD Monitors. interference (EMI) at the clock source which provides Block Diagram SR0 SR1 MRA SSON# VDD PLL Modulation CLKIN Frequency Divider Feedback Divider Phase Detector Loop Filter VCO Output Divider ModOUT 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. P2040C November 2006 rev 1.6 Pin Configuration CLKIN 11 MRA 22 88 VDD 77 SR0 P2040C SR1 33 66 ModOUT VSS 44 55 SSON# Pin Description Pin# Pin Name Type 1 CLKIN I External reference frequency input. Connect to externally generated reference signal. 2 MRA I Digital logic input used to select modulation rate. This pin has an internal pull-up resistor. 3 SR1 I Digital logic input used to select Spreading Range. This pin has an internal pull-up resistor. 4 VSS P Ground to entire chip. Connect to system ground. Description 5 SSON# I Digital logic input used to enable Spread Spectrum function (Active LOW). Spread Spectrum function enabled when LOW, disabled when HIGH. This pin has an internal pull-low resistor. 6 ModOUT O Spread spectrum Clock Output. 7 SR0 I Digital logic input used to select Spreading Range. This pin has an internal pull-up resistor. 8 VDD P Power supply for the entire chip. Modulation Selection (Commercial) – Table 1 MRA SR1 SR0 0 0 0 0 Spreading Range Modulation Rate 54MHz 65MHz 81MHz 140MHz 162MHz 0 ±1.4% ±1.2% ±1.0% ±0.6% ±0.4% (Fin/80) * 62.49KHz 1 ±2.0% ±1.9% ±1.6% ±1.0% ±0.8% (Fin/80) * 62.49KHz 0 1 0 ±1.1% ±0.9% ±0.5% ±0.3% ±0.3% (Fin/80) * 62.49KHz 0 1 1 ±1.8% ±1.5% ±1.0% ±0.54% ±0.4% (Fin/80) * 62.49KHz 1 0 0 ±1.3% ±1.3% ±1.3% ±1.25% ±1.1% (Fin/80) * 20.83KHz 1 0 1 ±2.2% ±2.1% ±2.1% ±2.0% ±1.8% (Fin/80) * 20.83KHz 1 1 0 ±1.4% ±1.3% ±1.4% ±1.2% ±0.9% (Fin/80) * 20.83KHz 1 1 1 ±2.1% ±2.1% ±2.1% ±1.4% (Fin/80) * 20.83KHz ±1.9% LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 2 of 9 P2040C November 2006 rev 1.6 Spread Spectrum Selection Table 1 illustrates the possible spread spectrum options. The optimal setting should minimize system EMI to the fullest without affecting system performance. The spreading is described as a percentage deviation of the center frequency (Note: The center frequency is the frequency of the external reference input on CLKIN, Pin 1). Example: P2040C is designed for high resolution flat panel applications and is able to support panel frequencies from 50MHz to 173MHz. For a 65MHz pixel clock frequency, a spreading selection of MRA=0, SR1=1 and SR0 =1 provides a percentage deviation of ±1.50% (see Table 1). This result in frequency on ModOUT being swept from 64.03MHz to 65.98MHz at a modulation rate of 50.77KHz (see Table 1). This particular example (see Figure below) given here is a common EMI reduction method for notebook LCD panel and has already been implemented by most of the leading OEM and mobile graphic accelerator manufacturers. Application Schematic for Mobile LCD Graphics Controllers +3.3V 65MHz from graphics accelerator 1 CLKIN VDD 8 2 MRA SR0 7 3 SR1 4 VSS 0.1µF Modulated 65MHz signal with ±1.5 % deviation and modulation rate of 50.77KHz. This signal is connected back to the spread spectrum input pin (SSIN) of the graphics accelerator. ModOUT 6 SSON# 5 P2040C Digital control for the SS enable or disable LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 3 of 9 P2040C November 2006 rev 1.6 Absolute Maximum Ratings Symbol Parameter Rating Unit VDD, VIN Voltage on any pin with respect to Ground -0.5 to +4.6 V Storage temperature -65 to +125 °C TA Operating temperature -40 to +125 °C Ts Max. Soldering Temperature (10 sec) Thermal Resistance from Junction For SOIC Package to Ambient ( No Air Flow) For TSSOP Package 260 156.5 124 150 °C °C/W 2 KV TSTG өJA TJ Junction Temperature TDV Static Discharge Voltage (As per JEDEC STD22- A114-B) °C 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. 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 (pull-up resistor on inputs SR0, SR1 and MRA) - - -40 µA IIH Input high current (pull-down resistor on input SSON#) - - 40 µA VOL Output low voltage (VDD = 3.3V, IOL = 20mA) - - 0.4 V VOH Output high voltage (VDD = 3.3V, IOL = 20mA) 2.5 - - V IDD Static supply current standby mode - 0.7 - mA ICC VDD tON ZOUT Dynamic supply current (3.3V and 10pF loading) 9 16 22 mA 3.0 3.3 3.6 V Power-up time (first locked cycle after power up) - 0.18 - mS Clock output impedance - 50 - Ω Operating Voltage AC Electrical Characteristics Symbol Parameter Min Typ Max Unit 173 MHz fIN Input frequency 50 tLH* Output rise time (measured at 0.8V to 2.0V) 0.3 0.7 1.0 nS tHL* Output fall time (measured at 2.0V to 0.8V) 0.3 0.7 1.0 nS tJC Jitter (cycle to cycle) - - 360 pS tD Output duty cycle 45 50 55 % *tLH and tHL are measured into a capacitive load of 15pF LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 4 of 9 P2040C November 2006 rev 1.6 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° LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 5 of 9 P2040C November 2006 rev 1.6 8-lead TSSOP (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° LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 6 of 9 P2040C November 2006 rev 1.6 Ordering Information Part Number Marking Package Type Temperature P2040CF-08ST P2040CF 8-Pin SOIC, TUBE, Pb Free Commercial P2040CF-08SR P2040CF 8-Pin SOIC, TAPE & REEL, Pb Free Commercial P2040CF-08TT P2040CF 8-Pin TSSOP, TUBE, Pb Free Commercial P2040CF-08TR P2040CF 8-Pin TSSOP, TAPE & REEL, Pb Free Commercial I2040CF-08ST I2040CF 8-Pin SOIC, TUBE, Pb Free I2040CF-08SR I2040CF 8-Pin SOIC, TAPE & REEL, Pb Free Industrial Industrial I2040CF-08TT I2040CF 8-Pin TSSOP, TUBE, Pb Free Industrial I2040CF-08TR I2040CF 8-Pin TSSOP, TAPE & REEL, Pb Free Industrial X2040CF-08ST X2040CF 8-Pin SOIC, TUBE, Pb Free Automotive X2040CF-08SR X2040CF 8-Pin SOIC, TAPE & REEL, Pb Free Automotive X2040CF-08TT X2040CF 8-Pin TSSOP, TUBE, Pb Free Automotive X2040CF-08TR X2040CF 8-Pin TSSOP, TAPE & REEL, Pb Free Automotive P2040CG-08ST P2040CG 8-Pin SOIC, TUBE, Green Commercial P2040CG-08SR P2040CG 8-Pin SOIC, TAPE & REEL, Green Commercial P2040CG-08TT P2040CG 8-Pin TSSOP, TUBE, Green Commercial P2040CG-08TR P2040CG 8-Pin TSSOP, TAPE & REEL, Green Commercial I2040CG-08ST I2040CG 8-Pin SOIC, TUBE, Green Industrial I2040CG-08SR I2040CG 8-Pin SOIC, TAPE & REEL, Green Industrial I2040CG-08TT I2040CG 8-Pin TSSOP, TUBE, Green Industrial I2040CG-08TR I2040CG 8-Pin TSSOP, TAPE & REEL, Green Industrial X2040CG-08ST X2040CG 8-Pin SOIC, TUBE, Green X2040CG-08SR X2040CG 8-Pin SOIC, TAPE & REEL, Green Automotive Automotive X2040CG-08TT X2040CG 8-Pin TSSOP, TUBE, Green Automotive X2040CG-08TR X2040CG 8-Pin TSSOP, TAPE & REEL, Green Automotive LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 7 of 9 P2040C November 2006 rev 1.6 Device Ordering Information P 2 0 4 0 C F - 0 8 S T Package: ST – SOIC, TUBE SR - SOIC, T/R TT – TSSOP, TUBE TR - TSSOP, T/R PIN COUNT F = Pb FREE and RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS DEVICE NUMBER P = Commercial Temperature Range (0°C to 70°C) I = Industrial Temperature Range (-40°C to 85°C) X = Automotive Temperature Range (-40°C to 125°C) Licensed under U.S Patent Nos 5,488,627 and 5,631,921 LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 8 of 9 P2040C November 2006 rev 1.6 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 Preliminary Information Part Number: P2040C Document Version: v1.6 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. LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. 9 of 9