Voltage Controlled Temperature Compensated Crystal Oscillators VCTCXO, VM572T Series, CMOS Output, 32.768 KHz MERCURY Since 1973 Features: Suitable for non-battery operated real time clocks require 32.768 KHz reference frequency 5x7x2.3 mm ceramic SMD VCTCXOs with CMOS square wave output RoHS compliant General Specifications (at+25°C and specified input voltage) Product Series Frequency Output Wave From Initial Calibration Tolerance (1) Frequency Stability (ppm) VM572T 32.768 KHz Square wave. Wave form code is “T” ±2 ppm at +25°C and Vcon = +1.5 V D.C. ± 1 ppm ±1.5 ppm ±2.0 ppm ±2.5 ppm -10 to +60°C √ √ √ √ -20 to +70°C √ √ √ √ -30 to +75°C √ √ √ √ -40 to +85°C Frequency Stability vs Aging vs Voltage Change vs Load Change vs reflow √ √ √ Temperature Range Standard Supply Voltage (VDD) Output Voltage Level Vdd=3.0V ±1.0 ppm max. first year at +25°C ±0.3 ppm max. for a ±5% input voltage change ±0.3 ppm max. for a ±10% loading condition change ±1 ppm max. 1 reflow and measured 24 hours afterwards +2.8 V +3.0 V +3.3 V (voltage code is (voltage code is (voltage code is “28”) “3”) “33”) Logic “1” 2.7 V min. Logic “0” 0.3 V max. Rise Time and Fall Time 3 nano. sec. typ. 20% 80% of waveform Duty Cycle (Symmetry) 50%±10% measured at 50% waveform √: Available : Call us : Not available +5.0 V (voltage code is “5”) Start-up Time 2 m. sec. typ. Current Consumption 3.5 mA typ. at + 3.3V / 7 mA typ. at +5.0V Frequency Electronic ±10 ppm typical with Vcontrol centered at = +1.5 V and Vcontrol range of ±1.0 V Deviation Range Frequency Tuning Slope Polarity Positive: Positive voltage for positive frequency shift on pad 1. (VCTCXO only) Linearity ±10 % max. Output Load 15 pF Offset 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz SSB Phase Noise at +25°C Typical -65 dBc/Hz -100 dBc/Hz -130 dBc/Hz -150 dBc/Hz -150 dBc/Hz Storage Temperature -50°C to +100°C (1) : Frequency stability over temperature will be from this measured initial frequency. 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 3 Date: June 21, 2010 Rev. 2 Voltage Controlled Temperature Compensated Crystal Oscillators VCTCXO, VM572T Series, CMOS Output, 32.768 KHz MERCURY Since 1973 Part Number Format and Example: Part number example: VM572T 3 — VM572T3-32.768K-2.5/-30+75 32.768K — 2.5 ∕ Product Series = Please specify -30+75 : Voltage code; Use”28” for +2.8 V; use “3” for +3.0 V; use “33” for +3.3 V; : Frequency in KHz : Frequency stability : Operating Temperature range in °C use “5” for +5.0 V Environment Performance Specifications RoHS compliant, Pb (lead) free MSL=1 per IPC/JEDEC J-STD-020D.1 85% RH, 85°C, 48 hours Leak rate 2x10-8 ATM-cm3/sec max. Crystal part only. MIL-STD-202F method 208E MIL-STD-202F method 204, 35G, 50 to 2000 Hz MIL-STD-202F method 213B, test condi. E, 1000GG ½ sine wave -55 to +125°C 2.5 KV min. Human body model. Gold (0.3~1.2 um) over nickel (1.27~8.89um) Package Dimensions and Suggested Land Pattern: [0.275± 0.006] 7.00± 0.15 4 3 Pad 1 Pad 2 Pad 3 Pad 4 Control Voltage Ground Output Supply Voltage [0.046] 1.17 [0.004] 0.1 3 2 R0 .7 Bottom view 4 1 5.08 [0.200] typical 2.2[0.086] 2.0[0.079] 5.00±0.15 [0.197± 0.006] 2 2.3 max. [0.090 max.] Top view [0.055] 1.4 [0.024] 0.6 [0.027] 0.7 0.4 [0.015] 1 Unit: mm Top view 1.8[0.071] Green Requirement Moisture Sensitivity Level Humidity Hermeticity Solderability Vibration Shock Storage temp. range ESD Protection Solder Pad Surface Finish 5.08 [0.200] Rounded pad is pad No. 1. Count counter-clockwise when looking at top view. Count clockwise when looking at bottom view. Decoupling capacitor is not built-in. MERCURY Page 2 of 3 Date: June 21, 2010 Rev. 2 Voltage Controlled Temperature Compensated Crystal Oscillators VCTCXO, VM572T Series, CMOS Output, 32.768 KHz MERCURY Since 1973 CMOS Square Wave VCTCXO Test Circuit and Waveform: T2 Clock Out + + - V - 4 3 0.01uF A 15 pF * T1 80% 50% 1 + - 2 * Include all the 20% probe and stray capacitances Tr Tf Duty Cycle = T1 *100% T2 Recommended Reflow Soldering Profile Profile Feature Preheat/Soak - Temperature min. (Ts min.) - Temperature max. (Ts max.) - Time (ts) (Ts min. to Ts max.) Ramp-up rate (TL to Tp) Liquidous temperature (TL ) Time (tL) maintained above TL Peak package body temperature (Tp) Time (Tp) within 5⁰C of the classification temperature Tc Ramp-down rate (Tp to TL) Time 25⁰C to peak temperature MERCURY Page 3 of 3 Sn-Pb Eutectic Assembly Pb-free Assembly 100⁰C 150⁰C 60 to 120 seconds 3⁰C / sec. max. 150⁰C 200⁰C 60 to 180 seconds 3⁰C / sec. max. 183⁰C 60 to 150 seconds 217⁰C 60 to 150 seconds 235⁰C 10 to 30 seconds 260⁰C 20 to 40 seconds 6⁰C / second max. 6 minutes max. 6⁰C / second max. 8 minutes max. Date: June 21, 2010 Rev. 2