LFXO OSCILLATOR 32.768 kHz Fast Start-up/High Precision Miniature Surface Mount Crystal Oscillator DESCRIPTION Statek’s 32.768 kHz, surface mount LFXO oscillators, designed especially for applications requiring fast start-up and high precision, consist of a Statek miniature AT quartz crystal and a CMOS/TTL compatible hybrid circuit in a ceramic package. Each crystal is pre-qualified before assembly into the oscillator through electrical tests and characterization over temperature. For harsh environment applications, Statek provides a high shock version of the LFXO crystal oscillator. FEATURES High precision (±10 ppm) Fast start-up (0.8ms typ.) High shock resistance Tight frequency-temperature stability Low acceleration sensitivity (HG version) CMOS output Optional Output Enable/Disable with Tri-State Low EMI emission Full military testing per MIL-PRF-55310 Low jitter DIMENSIONS D 2 A TOP 3 BOTTOM 1 4 D B E C APPLICATIONS Military & Aerospace Smart Munitions Cockpit Systems Navigation Industrial, Computer & Communications Industrial Controls Instrumentation Down-hole Drilling SUGGESTED LAND PATTERN TYPICAL MAXIMUM DIM inches mm inches mm A 0.256 6.50 0.263 6.68 B 0.197 5.00 0.204 5.18 0.063 C (SM1) C (SM3/SM5) 0.067 1.60 1.70 0.065 0.073 1.65 1.85 D 0.055 1.40 0.065 1.65 E 0.060 1.52 0.070 1.78 PIN CONNECTIONS 1. Not connected (N) or Enable (E) 2. Ground 3. Output 4. VDD TEM C ERT I F I C AT IO S 10191 Rev A YS N IS O STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com 90 01 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Specifications are typical at 25OC unless otherwise noted. Specifications are subject to change without notice. Tighter specifications available (contact factory). Supply Voltage VDD Storage Temperature Maximum Process Temperature Supply Voltage1 3.3 V ±10% (2.5 V also available) Calibration Tolerance ±10 ppm and up Frequency Stability ±10 to ±50 ppm for Commercial Over Temperature3 ±20 to ±100 ppm for Industrial 2 ±30 to ±100 ppm for Military Output Load (CMOS) 15 pF Aging, first year 3 ppm MAX Shock Std: 5,000 g, 0.3 ms, ½ sine HG: 20,000 g, 0.3 ms, ½ sine Vibration5 20 g, 10-2,000 Hz swept sine 4 Operating Temp. Range -10 C to 70 C (Commercial) -40OC to 85OC (Industrial) -55OC to 125OC (Military) O O Disable (Pin 1 Low) Output Frequency Output High Z State Oscillator Oscillates Stops Current 500 µA 3.2 µA MAX LFXO Output Voltage High 0.9VDD VOL Output Voltage Low tstartup Start-up Time 0.8 tr Rise Time (10%-90%) 85 1000 ns tf Fall Time (10%-90%) 45 1000 ns 50 55 0.1VDD V 45 Enable (Pin 1 High*) V VOH Supply Current ENABLE/DISABLE OPTION E SUMMARY PACKAGING OPTIONS MIN Duty Cycle For the 32.768 kHz fast start-up LFXO, Statek offers two enable/disable options: E and N. The E-version has a Tri-State output and stops oscillating internally when the output is put into the high Z state. The N-version does not have PIN 1 connected internally and so has no enable/disable capability. The following table summarizes the Enable/Disable option E. UNIT SYMBOL PARAMETER IDD ENABLE/DISABLE OPTIONS (E/N) * When PIN 1 is allowed to float, it is held high by an internal pull-up resistor. ELECTRICAL CHARACTERISTICS6 TYP -0.3 V to 5.0 V -55OC to 125OC 260OC for 20 sec. - Tray Pack - 16 mm tape, 7˝ or 13˝ reels ms Per EIA 481 (see Tape and Reel datasheet #10109) % µA 500 1. Other supply voltages available. Contact factory for ordering information. 2. Other tolerances available. 3. Does not include calibration tolerance. Tighter tolerances available. 4. Higher shock available. Contact factory. 5. Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing also available. 6. Measurements done at VDD = 3.3V Note: All parameters are measured at ambient temperature with a 10 M!, 15 pF load. HOW TO ORDER 32.768 kHz LFXO OSCILLATORS/ FAST START-UP LFXO AT AT = For Fast Start-up/ High Precision HG 4 S HG = High Shock 2 = 2.5V “S” if special or otherwise leave 4 = 3.3V custom design. blank. Blank if Std. E SM3 Enable/Disable Termination Option Blank = SM1 = Gold Plated E or N (Pb Free) SM3 = Solder Dipped SM5 = Solder Dipped (Pb Free) 32.768K , Frequency K = kHz 30 30 / Calibration Tolerance @ 250C (in ppm) / Frequency Stability over Temp.Range (in ppm) / I Temperature Range C =10OC to +70OC I = -40OC to +85OC M = -55OC to +125OC S = Customer Specified OR / / 50 Total Frequency Tolerance (in ppm) / I Temperature Range C = -10OC to +70OC I = -40OC to +85OC M = -55OC to +125OC S = Customer Specified 10191 Rev A STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com