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| PI6C3503 Low Power Spread Spectrum Frequency Multiplier Features * Produces a 1 time spread spectrum clock signal from the input frequency. * 2.5 V or 3.3V power supply operation. * Input frequency range from 13MHz to 30MHz. * Frequency Spreading Ratio : +1.15% (Typical @15MHz output frequency) * Modulation Rate : Fin/640 * Low power consumption design * 6-pin SOT-23, 6-pin TDFN, 8-pin TSSOP, and 8-pin SOIC Packages. Description The PI6C3503 is a Low Power Frequency Multiplier with Spread Spectrum function to reduce EMI interference. The PI6C3503 provides a 1 time Spread Spectrum modulated output from a single clock source or a crystal. The PI6C3503 can reduce EMI at the clock output and it allows significant system cost savings by reducing the number of circuit board layers ferrite beads and shielding that are traditionally required to pass EMI regulations. Power down control is selectable through external logic state setting. The various and small package outlines can save board size and is easy for layout. The PI6C3503 can be used in most portable devices with low power requirements like PDA, DSC, MFP, Media player, portable-TV, and LCM(LCD Panel Module). PI6C3503 is one of Pericom clock products, if you have application need with clock input or output not specified here, please contact with Pericom for further information or custom clock design. Block Diagram Pin Configuration PD PD GND X2 X1 /CLKIN X1 /CLKIN X2 PD NC SOT-23 6 Pin CLKOU T VDD X1/CLKIN 1/M PED /CP CLKOUT LPF Modulation VCO 1/K VDD X2 1/N 8 Pin SOIC TSSOP NC CLKOU T GND 08-0035 1 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier 6 Pin Description Pin Name Pin No. 1 PD X2 X1/CLKIN VDD CLKOUT GND 2 3 4 5 6 IO TYPE I O I Power O GND Descriptions Power down control pin. Pull low to enable power down mode. Connect to VDD if not used. Crystal connection. If using an external reference, this pin must be left unconnected. 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. Power Supply. Spread spectrum clock output. Ground. 8 Pin Description Pin Name Pin No. X1/CLKIN 1 X2 PD NC GND CLKOUT NC VDD 2 3 4 5 6 7 8 IO TYPE I O I NC GND O NC Power Descriptions 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. Crystal connection. If using an external reference, this pin must be left unconnected. Power down control pin. Pull low to enable power down mode. Connect to VDD if not used. No Connection. Ground. Spread spectrum clock output. No connection. Power Supply. Electrical Specification Maximum Ratings Item Supply Voltage to Ground All Inputs and Outputs Storage Temperature Junction Temperature Soldering Temperature Note: Rating 5.5V -0.5V to VDD+0.5V -65 to +150C 150C 260C Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended period may affect reliability. 08-0035 2 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier DC Characteristics VDD = 2.5V 5%, Ambient Temperature 0 to +70C Symbol Parameter Conditions Min. Operating Voltage - 2.375 VDD VIH Input High Voltage - 2.0 VIL Input Low Voltage - - VOH Output High Voltage IOH= -8mA 1.8 VOL Output Low Voltage IOL= 8mA - IDD Supply Current 13MHz output and no - load IDDq Power down static current - PD = low - ZOUT_DOWN Nominal output impedance Down side buffer ZOUT_UP CIN TON Nominal output impedance Input Capacitance Power on time Up side buffer X1 input pin PD from low to high - - - Typ. 2.5 - - - - 1.9 - 40 45 5 3 Max. 2.625 - 0.8 - 0.6 2.4 1 - - - - Unit V V V V V mA A pF ms 08-0035 3 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier AC Characteristics VDD = 2.5V 5%, Ambient Temperature 0 to +70C Symbol Parameter Conditions CLKIN Input Frequency - CLKOUT Output Frequency - Output Frequency = 13MHz Spreading ratio SRatio Output Frequency = 30MHz Measured from 20% tRise Output rise time to 80% VDD, 15pF load. Measured from 80% tFall Output fall time to 20% VDD. 15pF load. tJ_Short Short term jitter Cycle to cycle jitter TDCIN Input duty cycle - TDCOUT Output duty cycle - Min. 13 13 - - - Typ. - - 1.15 0.65 1.7 Max. 30 30 - Unit MHz MHz % - - ns - - 30 45 1.50 - 50 50 - 200 70 55 ns ps % % 08-0035 4 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier DC Characteristics VDD = 3.3V 10%, Ambient Temperature 0 to +70C Symbol Parameter Conditions Operating Voltage - VDD Input High Voltage - VIH Input Low Voltage - VIL VOH Output High Voltage IOH = -8mA Output Low Voltage IOL= 8mA VOL IDD Supply Current 13MHz output and no load IDDq Power down static current PD = low ZOUT_DOWN ZOUT_UP CIN TON Nominal output impedance Nominal output impedance Input Capacitance Power on time Down side buffer Up side buffer X1 input pin PD from low to high Min. 3.0 2.0 - 2.5 - - - - - - - Typ. 3.3 - - - - 2.7 - 38 40 5 2 Max. 3.6 - 0.8 - 0.4 3.8 1 - - - - Unit V V V V V mA A pF ms 08-0035 5 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier AC Characteristics VDD = 3.3V 10%, Ambient Temperature 0 to +70C Symbol Parameter Conditions CLKIN Input Frequency - CLKOUT Output Frequency - Output frequency = SRatio Spreading Ratio 13MHz Output frequency = 30MHz tRise Output rise time Measured from 20% to 80% VDD, 15pF load Output fall time Measured from 80% tFall to 20% VDD, 15pF load tj_Short Short term jitter Cycle to cycle jitter Input duty cycle - TDCIN TDCOUT Output duty cycle - Min. 13 13 - - - - Typ. - - 1.25 0.7 1.3 1.2 Max. 30 30 - - - - Unit MHz MHz % ns ns - 30 45 - 50 50 150 70 55 ps % % Application Information Crystal Load Capacitors If a crystal is used with the device, the external trim capacitors CLtrim are used to adjust the effective capacitance to match the required crystal load capacitance. The CLtrim value can be derived from formula CLtrim = 2*CL - (Cs + Ci). Typical CLtrim = 28pF when crystal load = 18pF, stray capacitance Cs = 3pF and XTAL pins capacitance = 5pF. Crystal X1 X2 CLtrim CLtrim 08-0035 6 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier Physical Dimensions Packaging Mechanical: 6-Pin, SOT-23 DOCUMENT CONTROL NO. PD - 1912 REVISION: C DATE: 03/09/05 4 0.059 1.50 0.068 1.75 0.102 2.60 0.118 3.00 Datum "A" 0.075 1.90 BSC 6 5 0 - 10 2 3 0.037 0.95 BSC 0.004 0.10 0.023 0.60 0.014 0.35 0.019 0.50 0.110 2.80 0.118 3.00 0.057 1.45 MAX. SEATING PLANE 0.000 0.00 0.005 0.15 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Notes: 1) Controlling dimensions in millimeters 2) Ref: EIAJ SC-74A 3) Foot length is measured at flat portion of foot, reference to Datum "A" Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 * www.pericom.com DESCRIPTION: 6-Pin Small Outline Transistor Plastic Package, SOT-23 PACKAGE CODE: T 08-0035 7 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier Physical Dimensions Packaging Mechanical: 6-Pin, TDFN DOCUMENT CONTROL NO. PD - 2020 REVISION: A DATE: 03/09/05 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 * www.pericom.com DESCRIPTION: 6-Contact, Thin Dual-in-line Flat No Lead Package, TDFN PACKAGE CODE: ZC 08-0035 8 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier Physical Dimensions Packaging Mechanical: 8-Pin, SOIC Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 * www.pericom.com 08-0035 9 PS8929A 02/19/08 PI6C3503 Low Power Spread Spectrum Frequency Multiplier Physical Dimensions Packaging Mechanical: 8-Pin, TSSOP Note: 1. Package Outline Exclusive of Mold Flash and Metal Burr 2. Controlling dimentions in millimeters 3. Ref: JEDEC MO-153F/AA Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 * www.pericom.com Ordering Information Ordering Code PI6C3503TE PI6C3503ZCE PI6C3503WE PI6C3503LE Packaging Code T ZC W L Package Description Pb-Free & Green, 6-Pin SOT-23 Pb-Free & Green, 6-Pin TDFN Pb-free & Green, 8-Pin SOIC Pb-free & Green, 8-Pin TSSOP Notes: 1. Thermal characteristics and package top marking can be found at www.pericom.com/packaging. 2. E=Pb-free and Green package 3. Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com 08-0035 10 PS8929A 02/19/08 |
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