ASM3P2669AF-06OR

ASM3P2669A Peak EMI Reducing Solution Features • Generates a 1X low EMI spread spectrum clock of the input frequency. • Integrated loop filter components. • Operates with a 3.3V / 2.5V supply. • Operating current less than 4mA. • CMOS design. • Input frequency range: 6MHz to 12MHz for 2.5V 6MHz to 13MHz for 3.3V • Frequency deviation: ±1% @ 10MHz • 6L-TSOP (6L-TSOT-23) system cost savings by reducing the number of circuit board layers, ferrite beads and shielding that are traditionally required to pass EMI regulations. The ASM3P2669A uses the most efficient and optimized modulation profile approved by the FCC and is implemented by using a proprietary all digital method. The ASM3P2669A 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 EMI 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.’ Product Description The ASM3P2669A is a versatile spread spectrum frequency modulator designed specifically for a wide range of clock frequencies. The ASM3P2669A reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of all clock dependent signals. The ASM3P2669A allows significant Application The ASM3P2669A is targeted towards all portable devices like MP3 players and digital still cameras. Block Diagram VDD PD Modulation CLKIN Frequency Divider Feedback Divider PLL Phase Detector Loop Filter VCO Output Divider ModOUT VSS ©2010 SCILLC. All rights reserved. JANUARY 2010 – Rev. 2 Publication Order Number: ASM3P2669/D ASM3P2669A Pin Configuration (6L- TSOP Package) PD 1 NC 2 CLKIN 3 ASM3P2669A 6 5 VSS ModOUT VDD 4 Pin Description Pin# 1 2 3 4 5 6 Pin Name PD NC CLKIN VDD ModOUT VSS Type I I P O P Description Power-down control pin. Pull low to enable power-down mode. Connect to VDD if not used. No connect. External reference clock input. Power supply for the entire chip. Spread spectrum clock output. Ground connection. Specifications VDD (V) 2.5 3.3 Frequency Range (MHz) 6-12 6-13 Modulation Rate FIN/256 Absolute Maximum Ratings Symbol VDD, VIN TSTG Ts TJ TDV Storage temperature Parameter Rating -0.5 to +4.6 -65 to +125 260 150 2 Unit V ° C ° C ° C KV Voltage on any pin with respect to Ground Max. Soldering Temperature (10 sec) Junction Temperature 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. Operating Conditions Parameter VDD TA CL CIN Supply Voltage Operating Temperature (Ambient Temperature) Load Capacitance Input Capacitance Description Min 2.375 -40 Max 3.6 +85 15 7 Unit V ° C pF pF Rev. 2 | Page 2 of 7 | www.onsemi.com ASM3P2669A DC Electrical Characteristics for 2.5V Supply Symbol Parameter VIL VIH IIL IIH VOL VOH IDD ICC VDD tON ZOUT Input low voltage Input high voltage Input low current Input high current Output low voltage (VDD = 2.5 V, IOL = 8mA) Output high voltage (VDD = 2.5 V, IOH = 8mA) Static supply current Operating voltage Power-up time (first locked cycle after power-up) Output impedance 2 1 Min VSS-0.3 2.0 Typ Max 0.8 VDD+0.3 -35 35 0.6 Unit V V µA µA V V uA mA V mS 1.8 10 2 2.375 2.5 40 2.5 2.625 5 Dynamic supply current (Unloaded Output) Notes: 1. XIN / CLKIN pin and PD pin are pulled low. 2. VDD and XIN / CLKIN input are stable, PD pin is made high from low. AC Electrical Characteristics for 2.5V Supply Symbol CLKIN ModOUT Input frequency Output frequency CLKIN = 6MHz fd 1 tLH Parameter Min 6 6 Typ Max 12 12 Unit MHz MHz ±1.25 ±1 ±0.9 0.9 0.6 45 1.7 1 50 ±250 2.5 1.5 55 ±400 nS nS % pS % Frequency Deviation CLKIN = 10MHz CLKIN = 12MHz Output Rise time (measured from 0.7V to 1.7V) Output Fall time (measured from 1.7V to 0.7V) Output Duty Cycle Cycle-to-Cycle Jitter tHL 1 tD tJC Note: 1. tLH and tHL are measured into a capacitive load of 15pF. Rev. 2 | Page 3 of 7 | www.onsemi.com ASM3P2669A DC Electrical Characteristics for 3.3V Supply Symbol Parameter VIL VIH IIL IIH VOL VOH IDD ICC VDD tON ZOUT Input low voltage Input high voltage Input low current Input high current Output low voltage (VDD = 3.3 V, IOL = 8mA) Output high voltage (VDD = 3.3 V, IOH = 8mA) Static supply current Operating voltage Power-up time (first locked cycle after power-up) Output impedance 2 1 Min VSS-0.3 2.0 Typ Max 0.8 VDD+0.3 -35 35 0.4 Unit V V µA µA V V uA mA V mS 2.5 2.5 2.7 3.3 35 10 3 3.6 5 Dynamic supply current (Unloaded Output) Notes: 1. XIN / CLKIN pin and PD pin are pulled low. 2. VDD and XIN / CLKIN input are stable, PD pin is made high from low. AC Electrical Characteristics for 3.3V Supply Symbol CLKIN ModOUT Input frequency Output frequency CLKIN = 6MHz fd Frequency Deviation CLKIN = 10MHz CLKIN = 13MHz 1 tLH Parameter Min 6 6 Typ Max 13 13 Unit MHz MHz ±1.25 ±1 ±0.9 0.7 0.6 45 1.3 0.9 50 ±300 1.7 1.3 55 ±450 nS nS % pS % Output Rise time (measured from 0.8V to 2.0V) Output Fall time (measured at 2.0V to 0.8V) Output Duty Cycle Cycle - Cycle Jitter tHL 1 tD tJC Note: 1. tLH and tHL are measured into a capacitive load of 15pF. Note: All parameters are at an Extended Industrial temperature range unless otherwise stated. Modulation Profile Rev. 2 | Page 4 of 7 | www.onsemi.com ASM3P2669A Typical Application Schematic VDD C1 0.1µF C2 2.2µF VDD ASM3P2669A Rs ModOUT ModOUT Clock VSS Rev. 2 | Page 5 of 7 | www.onsemi.com ASM3P2669A Package Information 6L-TSOP Package Dimensions Symbol Min A A1 A2 b H D B e C L θ 0.00 0.033 0.012 Inches Max 0.04 0.004 0.036 0.02 Millimeters Min Max 1.00 0.00 0.84 0.30 0.127 BSC 2.90 BSC 1.60 BSC 0.950 BSC 2.80 BSC 0.30 0° 0.50 4° 0.10 0.90 0.50 0.005 BSC 0.114 BSC 0.06 BSC 0.0374 BSC 0.11 BSC 0.0118 0° 0.02 4° Rev. 2 | Page 6 of 7 | www.onsemi.com ASM3P2669A Ordering Information Part Number ASM3P2669AF-06OR ASM3I2669AF-06OR Marking H4L H5L Package Type 6L-TSOP (6L-TSOT-23), TAPE & REEL, Pb Free 6L-TSOP (6L-TSOT-23), TAPE & REEL, Pb Free Temperature 0° to +70° C C -40° to +85° C C A “microdot” placed at the end of last row of marking or just below the last row toward the center of package indicates Pb-free. Licensed under US Patent #5,488,627 and #5,631,921. Note: This product utilizes US Patent #6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. 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