EMI Reducing Spread Spectrum Clock Oscillators (SSXOs) 18HM Series (+1.8 V Supply Voltage) Group “F” Features: MERCURY Since 1973 18HM53 ◘ Reduces Electromagnetic Interference by approx. -12dB ◘ Drop-In Replacement for Conventional Oscillators ◘ No Need to Re-Spin the Board or Solder Pad Layout ◘ Operates with a +1.8V Supply Voltage ◘ RoHS Compliant & Lead - Free ◘ 3.2 x 2.5, 5.0 x 3.2 or 5.0 x 7.0mm Package Sizes ◘ Save Money & Time to Market 18HM32 18HM572 Applications: ◘ Printers; Multiple function printers (MPCs) ◘ Digital copiers; PDAs ◘ Networking; LAN / WAN; Routers ◘ Storage systems (CD-ROM, VCD, DVD & HDD) ◘ Scanner; Modems; Projectors ◘ Hand-held ID Readers ◘ Embedded systems; ◘ Automotive; GPS Navigation Systems ◘ LCD PC Monitors / LCD TVs ◘ ADSL; PCMCIA ◘ Still Digital Cameras (SDCs) ◘ Medical Devices Modulation Types DOWN SPREAD or CENTER SPREAD Down spread “D”. “D1” as an example Center spread “C”. “C0.5” as an example Output amplitude (dB) vs frequency span (MHz) Conventional Clock dB EMI reduction fo - (fo*1%) Spread spectrum clock fc Frequency Conventional Clock dB EMI reduction fo - (fo*0.5%) fo=fc Spread Spectrum Crystal Oscillator (SSXO): Unlike the conventional clock, the mode energy of a spread spectrum clock is spread (distributed) over a wider bandwidth between two pre-defined frequency boundaries by the frequency modulation technique. The modulation carrier frequency is in the KHz range which makes the modulation process transparent to the oscillator frequency. This controlled modulation process can be on all of one side of the nominal frequency (down spread), which is preferred if system overclocking is a concern, or 50% up and 50% down (center spread). fo+(fo*0.5%) 42 MHz non-SSC vs SSC at Center Spread 0.25%: No modulation (non-SSXO) -9.9 dB Center spread 0.25% (C0.25) -22.8 dB 12.3 dB EMI reduction MERCURY www.mercury-crystal.com Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: [email protected] U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: [email protected] MERCURY Page 1 of 5 Oct. 11. 2012 Rev. 0 EMI Reducing Spread Spectrum Clock Oscillators (SSXOs) 18HM Series (+1.8 V Supply Voltage) Group “F” MERCURY Since 1973 General Specifications: at Ta=+25°C, CL=15 pF Product Models / Package Sizes Performance Characteristics Frequency Range 18HM572: 5 x 7 x 1.4 mm 18HM53: 3.2 x 5 x 1.2 mm 18HM32: 2.5 x 3.2 x 1.0 mm Group “F” 12.5 ~ 42.0 MHz EMI Reduction Rate (EMI reduction is applied to the entire spectrum) 0.5% -0.5% (D0.5) ±0.25 (C0.25) -12 dB typical 1% -1% (D1) ±0.5 (C0.5) -16 dB typical 2% -2% (D2) ±1.0 (C1.0) -18 dB typical For 12.5 MHz: 10.1 KHz min.; 11.7 KHz typical; 13.9 KHz max. For 26 MHz: 21.1 KHz min.; 24.4 KHz typical; 29 KHz max. For 42 MHz: 34.0 KHz min.; 39.4 KHz typical; 46.8 KHz max. Frequency dependent. Call for details. Total % Spread Type / Spread Percentage / EMI Reduction Rate Modulation Carrier Frequency (Dither rate, number of clocks per one modulation) Down Spread (D) Output Logic CMOS Square Wave Input Voltage (VDD) VDD = +1.8 ±0.15 V D.C. Center Spread (C) Output Voltage “High”; “1” Commercial (-10°C to +70°C): “A”: ±25 ppm ; “B’: ±50 ppm; “C”:±100 ppm Industrial (-40°C to +85°C): “D”: ±25 ppm ; “E’: ±50 ppm; “F”:±100 ppm 1.6 V min.; 1.85 V max. IOH = -2 mA Output Voltage “Low”; “0” 0.0 V min.; 0.2 V max. IOL = 2 mA Rise Time / Fall Time 2.5 n sec. max. (10% VDD ↔ 90% VDD) 15 pF max. 30 Ω typical. 0.4 V/ns min.; 3.0 V/ns max. VOL-VOH, 15 pf Load 2 ms typical; 5 ms max. 40 ms max. 13 MHz: 2.0 mA typical 16 MHz: 2.8 mA typical 25 MHz: 3.5 mA typical 42 MHz: 5.0 mA typical 50%±10%. ( CL=15 pF ;at 50% VDD) 100 ps rms max. Frequency Stability (exclude modulation) Load Output Impedance Output Slew Rate Start-up Time Stabilization Time Current Consumption Duty Cycle Cycle-to-cycle Jitter Aging Pin 1 Function ±5 ppm per year max.; Ta=+25°C Output is high impedance when taken low. Internal circuit is When taken LOW still operating. When taken HIGH or float Output Output enable /disable time: 100 ns max. Absolute Maximum Ratings Power Supply Voltage VDD Input Voltage Output Voltage Operation Junction Temperature Output Current MERCURY -0.5 V min; +2.5V max. Vss-0.5V min.; VDD+0.5V max. Vss-0.5V min.; VDD+0.5V max. -40°C min.; +125°C max. -13 mA min.; +13 mA max. Page 2 of 5 Oct. 11. 2012 Rev. 0 EMI Reducing Spread Spectrum Clock Oscillators (SSXOs) 18HM Series (+1.8 V Supply Voltage) Group “F” MERCURY Since 1973 Environmental Performance Specifications RoHS compliant, Pb (lead) free in accordance with EU Directive 2002/95/EC 6/6 (2002/95/EC) and WEEE (2002/96/EC) Level 1 (infinite) according to IPC/JEDEC J-STD-020D.1 e4 -55 to +125°C 85% RH, 85°C, 48 hours MIL-Std-883, method 1014, condition A / MIL-Std-883, method 1014, condition C MIL-STD-202F method 208E 260°C for 10 sec. 2X. MIL-STD-202F method 204, 35G, 50 to 2000 Hz MIL-STD-202F method 213B, test condi. E, 1000GG ½ sine wave MIL-STD-202, method 215 MIL-STD-883, method 1010 >2000 V (per MIL-STD-883, method 3015) Gold (0.3 um min.) over nickel (1.27 um to 8.89 um) 18HM572: 0.17 grams 18HM53: 0.09 grams 18HM32: 0.04 grams RoHS Status Moisture Sensitivity Level Second Level Interconnect Storage temp. range Humidity Fine Leak / Gross Leak Solderability Reflow Vibration Shock Resistance to Solvent Temperature Cycling ESD Rating Pad Surface Finish Weight of the Device Block Diagram OE Oscillator PLL SSXO Output VDD ÷ VSS Spread Spectrum Modulator (KHz) Part Number Format and Example: Format: Package 18HM Code _ 572 5x7x1.4 mm 53 3.2x5x1.0 mm 32 2.5x3.2x1.0 mm Frequency Stability Code T _ Frequency Stability Code “A” Commercial “B” (-10°C ~+70°C) “C” “D” Industrial “E” (-40°C ~+85°C) “F” Frequency in MHz F _ Spread Type Spread % Spread Type and Percentage “D0.5” “D1” Down Spread “D2” “C0.25” “C0.5” Center Spread “C1.0” ±25 ppm ±50 ppm ±100 ppm ±25 ppm ±50 ppm ±100 ppm -0.5% -1% -2% ±0.25% ±0.5% ±1% Example: 18HM572-BT-32.768F-C0.5 Description of the example: +18V HM572 series 5x7 mm spread spectrum clock, frequency stability is ±50 ppm over -10°C to +70°C, Tri-state on pin 1, 32.768 MHz, group “F”, center spread ±0.5 MERCURY Page 3 of 5 Oct. 11. 2012 Rev. 0 EMI Reducing Spread Spectrum Clock Oscillators (SSXOs) 18HM Series (+1.8 V Supply Voltage) Group “F” HM572 Package Dimensions and Recommended Solder Pad Layout Since 1973 unit: (mm) 7.00±0.15 5.0±0.2 3 3.2±0.2 5.00±0.15 4 0.75 18HM53 Package 1 1.20±0.10 1.4 2 2.2 1 4 3 5.08 5.08 .2 R0 0.1 1.2 R0 . 1.8 2.0 1.4 7 1.25 0.6 2 1.20±0.1 2.2 1.2±0.1 18HM572 Package MERCURY 2.54 typ. bottom view 2.54 top view 18HM32 Package Pin Connections: Pin 1 OE Pin 2 Ground Pin 3 SSXO Output Pin 4 +1.8V D.C. Product Marking Example of HM572 package Package code: 572 “18” for +1.8 VDD “HM572” product prefix Frequency in MHz Example: 100.000 Pin #1 indicator 18HM572 xT-F xxx.xxx xx.x MEC x x x Stability code (A ~ F) “T”:Tri-state on pin 1 Group “F Spread type and percentage. Example: C1.5 Week number of the month. “1”~”5” Month of the year.“A” for Jan.~”L” for Dec. Year: “2” for 2012, “3” for 2013,etc MERCURY Page 4 of 5 Oct. 11. 2012 Rev. 0 EMI Reducing Spread Spectrum Clock Oscillators (SSXOs) 18HM Series (+1.8 V Supply Voltage) Group “F” MERCURY Since 1973 Recommended Solder Reflow Profile (per IPC/JEDEC J-STD-020D.1) Profile Feature Sn-Pb Eutectic Assembly Preheat/Soak - Temperature min. (Ts min.) 100⁰C - Temperature max. (Ts max.) 150⁰C - Time (ts) (Ts min. to Ts max.) 60 to 120 seconds Ramp-up rate (TL to Tp) 3⁰C / sec. max. Liquidous temperature (TL ) 183⁰C Time (tL) maintained above TL 60 to 150 seconds Peak package body temperature (Tp) 235⁰C Time (Tp) within 5⁰C of the classification temperature Tc 10 to 30 seconds Ramp-down rate (Tp to TL) 6⁰C / second max. 6 minutes max. Time 25⁰C to peak temperature All temperatures refer to topside of the package, measured on the package body surface. Pb-free Assembly 150⁰C 200⁰C 60 to 180 seconds 3⁰C / sec. max. 217⁰C 60 to 150 seconds 260⁰C 20 to 40 seconds 6⁰C / second max. 8 minutes max. Product Support Evaluation Board: Part number “ EVB-18HM-F”. By toggling “HIGH” and “LOW” on two of the pins on this EVB, user can quickly determine the proper spread percentage (proper EMI reduction rate) for his/her specific applications. Please contact Mercury sales team. Technical note: TN-030 “How to use Mercury 1.8V EMI Reducing Spread Spectrum Clock Oscillators?” Technical note: TN-020 “Low EMI Spread Spectrum Clock Oscillators” Product status: Active. Product availability: Now. Lead time: 5 to 6 weeks. MERCURY Page 5 of 5 Oct. 11. 2012 Rev. 0