ASM3P2274A November 2006 rev 1.1 Low Power 4X Multiplier EMI Reduction IC Features • The ASM3P2274A uses the most efficient and optimized modulation profile approved by the FCC and is Generates a 4X EMI optimized clock signal at the implemented by using a proprietary all digital method. output. • Integrated loop filter components. • Operates with a 3.3 / 2.5V Supply. • Low power CMOS design. • Input frequency range: 12MHz to 30MHz for 2.5V. The ASM3P2274A modulates the output of a single PLL in order to “spread” the bandwidth of a synthesized clock, and more importantly, decreases the peak amplitudes of its harmonics. This results in significantly lower system : 12MHz to 30MHz for 3.3V. • EMI compared to the typical narrow band signal produced Frequency deviation: -1.5% (Typ) @66MHz by oscillators and most frequency generators. Lowering Output Frequency. • EMI by increasing a signal’s bandwidth is called ‘spread Available in 6-pin TSOT-23 Package. spectrum clock generation’. Product Description Applications The ASM3P2274 is a versatile Spread Spectrum The ASM3P2274A is targeted towards all portable Frequency Modulator designed specifically for a wide devices with very low power requirements like MP3 range of clock frequencies. It provides a 4x Spread players,MFP, LCD Panel Module and digital still cameras. Spectrum Modulated output from an input clock source. The ASM3P2274A reduces electromagnetic interference Key Specifications (EMI) at the clock source, allowing system wide reduction Description of EMI of all clock dependent signals. The ASM3P2274A Specification allows significant system cost savings by reducing the Supply voltages VDD = 3.3V / 2.5V number of circuit board layers ferrite beads, Cycle-to-Cycle Jitter 360pS (Typ) Output Duty Cycle 45/55% Modulation Rate Equation FIN/640 -1.5% (Typ) @ 66MHz Output shielding that are traditionally required to pass EMI regulations. Frequency Deviation Block Diagram VDD PD PLL Modulation XIN/CLKIN XOUT Crystal Oscillator Frequency Divider Feedback Divider Phase Detector Loop Filter VCO Output Divider 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. ModOUT ASM3P2274A November 2006 rev 1.1 Pin Configuration (6-pin TSOT- 23 Package) PD 1 XOUT 2 ASM3P2274A XIN / CLKIN 3 6 VSS 5 ModOUT 4 VDD Pin Description Pin# 1 Pin Name PD Type Description I Power-down control pin. Pull low to enable power-down mode. Connect to VDD if not used. 2 XOUT O Crystal connection. If using an external reference, this pin must be left unconnected. 3 XIN / CLKIN I Crystal connection or external reference frequency input. This pin has dual functions. It can be connected either to an external crystal or an external reference clock. 4 VDD P Power supply for the entire chip. 5 ModOUT O Spread spectrum clock output (4X output) 6 VSS P Ground connection. Modulation Profile Specifications Description Input Frequency Range Specification For 2.5V Supply For 3.3V Supply 12MHz < CLKIN < 30MHz 12MHz < CLKIN < 30MHz Modulation Equation FIN/640 Frequency Deviation -1.5% (Typ) @ 66MHz Output Low Power 4X Multiplier EMI Reduction IC Notice: The information in this document is subject to change without notice. 2 of 8 ASM3P2274A November 2006 rev 1.1 Absolute Maximum Ratings Symbol Parameter Rating Unit 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 +85 °C Ts Max. Soldering Temperature (10 sec) 260 °C TJ Junction Temperature 150 °C 2 KV VDD, VIN TSTG Static Discharge Voltage TDV (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. DC Electrical Characteristics for 2.5V Supply (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 - - -35 µA IIH Input high current - - 35 µA IXOL XOUT output low current (@0.5V, VDD=2.5V) - 3 - mA IXOH XOUT output high current (@1.8V, VDD=2.5V) - 3 - mA VOL Output low voltage (VDD = 2.5V, IOL = 8 mA) - - 0.6 V VOH Output high voltage (VDD = 2.5V, IOH = 8 mA) 1.8 - - V IDD Static supply current* - - 2 uA ICC Dynamic supply current (2.5V, 66MHz and no load) - 3.0 - mA 2.375 2.5 2.625 V VDD Operating voltage tON ZOUT Power-up time (first locked cycle after power-up)** - - 5 mS Output impedance - 50 - Ω * XIN /CLKIN pin and PD pin are pulled low ** VDD and XIN/CLKIN input are stable, PD pin is made high from low. AC Electrical Characteristics for 2.5V Supply Symbol CLKIN ModOUT fd Parameter Min Typ Max Unit Input frequency 12 - 30 MHz Output frequency 48 - 120 MHz - -1.6 -1.4 - % Frequency Deviation Output Frequency = 48MHz Output Frequency = 120MHz tLH* Output rise time (measured from 0.7V to 1.7V) 0.5 2.0 2.3 nS tHL* Output fall time (measured from 1.7V to 0.7V) 0.4 1.0 1.2 nS tJC Jitter (Cycle to cycle) - 360 - pS tD Output duty cycle 40 50 60 % * tLH and tHL are measured into a capacitive load of 15pF Low Power 4X Multiplier EMI Reduction IC Notice: The information in this document is subject to change without notice. 3 of 8 ASM3P2274A November 2006 rev 1.1 DC Electrical Characteristics for 3.3V Supply (Test condition: All parameters are measured at room temperature (+ 25°C) unless otherwise stated) Symbol 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 Parameter Input high current - - 35 µA IXOL XOUT output low current (@0.4V, VDD=3.3V) - 3 - mA IXOH XOUT output high current (@2.5V, VDD=3.3V) - 3 - mA VOL Output low voltage (VDD = 3.3V, IOL = 8 mA) - - 0.4 V VOH Output high voltage (VDD = 3.3V, IOH = 8 mA) 2.5 - - V IDD Static supply current* - - 2 uA ICC Dynamic supply current (3.3V, 66MHz and no load) - 4.0 - mA 3.0 3.3 3.6 V Power-up time (first locked cycle after power-up)** - - 5 mS Output impedance - 45 - Ω VDD tON ZOUT Operating voltage * XIN /CLKIN pin and PD pin are pulled low ** VDD and XIN/CLKIN input are stable, PD pin is made high from low. AC Electrical Characteristics for 3.3V Supply Symbol CLKIN ModOUT fd Parameter Min Typ Max Unit Input frequency 12 - 30 MHz Output frequency 48 - 120 MHz - -1.6 -1.4 - % Frequency Deviation Output Frequency = 48MHz Output Frequency = 120MHz tLH* Output rise time (measured from 0.8 to 2.0V) 0.4 1.3 1.6 nS tHL * Output fall time (measured at 2.0V to 0.8V) 0.4 0.8 1.1 nS - 360 - pS 40 50 60 % tJC Jitter (Cycle to cycle) tD Output duty cycle *tLH and tHL are measured into a capacitive load of 15pF Low Power 4X Multiplier EMI Reduction IC Notice: The information in this document is subject to change without notice. 4 of 8 ASM3P2274A November 2006 rev 1.1 Typical Crystal Oscillator Circuit 200KΩ Crystal R1 = 510Ω C1 = 27 pF C2 = 27 pF Typical Crystal Specifications Fundamental AT cut parallel resonant crystal Nominal frequency 14.31818MHz Frequency tolerance ± 50 ppm or better at 25°C Operating temperature range -25°C to +85°C Storage temperature -40°C to +85°C Load capacitance 18pF Shunt capacitance 7pF maximum ESR 25 Ω Low Power 4X Multiplier EMI Reduction IC Notice: The information in this document is subject to change without notice. 5 of 8 ASM3P2274A November 2006 rev 1.1 Package Information 6-pin TSOT-23 Package Dimensions Symbol Inches Min A Max Millimeters Min Max 0.04 1.00 A1 0.00 0.004 0.00 0.10 A2 0.033 0.036 0.84 0.90 b 0.012 0.02 0.30 0.50 H 0.005 BSC 0.127 BSC D 0.114 BSC 2.90 BSC B 0.06 BSC 1.60 BSC e 0.0374 BSC 0.950 BSC C 0.11 BSC 2.80 BSC L 0.0118 0.02 0.30 0.50 θ 0° 4° 0° 4° Low Power 4X Multiplier EMI Reduction IC Notice: The information in this document is subject to change without notice. 6 of 8 ASM3P2274A November 2006 rev 1.1 Ordering Information Part Number Marking Package Type Temperature ASM3P2274AG-06-OR Z3 6-Pin TSOT-23, TAPE & REEL, Green Commercial ASM3I2274AG-06-OR Z6 6-Pin TSOT-23, TAPE & REEL, Green Industrial Device Ordering Information A S M 3 P 2 2 7 4 A F - 0 6 - 0 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 DEVICE PIN COUNT F = LEAD FREE AND RoHS COMPLIANT PART 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 = Reserved 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 Low Power 4X Multiplier EMI Reduction IC Notice: The information in this document is subject to change without notice. 7 of 8 ASM3P2274A November 2006 rev 1.1 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: ASM3P2274A Document Version: v1.1 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 4X Multiplier EMI Reduction IC Notice: The information in this document is subject to change without notice. 8 of 8