LFXOTF OSCILLATOR 32.768 kHz Low Current Consumption Miniature Surface Mount Crystal Oscillator DESCRIPTION Statek’s 32.768 kHz LFXOTF oscillator is designed for applications requiring low current consumption (as low as 600 nA). It consist of a Statek miniature tuning fork quartz crystal and a CMOS compatible IC in a ceramic package. The ceramic packaged crystal used in the LFXOTF oscillator is pre-qualified before assembly through electrical tests and characterization over temperature FEATURES Ultra-low power Low aging (double hermetic seal) CMOS output Optional output enable/disable with tri-state Low EMI emission Full military testing available High temperature option DIMENSIONS APPLICATIONS Medical Military & Aerospace Industrial controls Instrumentation TYPICAL SUGGESTED LAND PATTERN 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/Disable (T) 2. Ground 3. Output 4. VDD IS O STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com 90 01 TEM C ERT I F I C AT N IO S 10195 Rev B YS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Specifications are typical at 25OC unless otherwise noted. Specifications are subject to change without notice. Supply Voltage VDD Storage Temperature Process Temperature 1 Supply Voltage Current Consumption 1.8 V to 5 V (VDD) See Table 1 2 Calibration Tolerance 3 0.5 V to 7 V -55O C to +125O C 260O C for 20 s TYPICAL CURRENT CONSUMPTION - TABLE 1 ±10 ppm ±30 ppm ±100 ppm VDD (V) Frequency Stability Follows that of a 32.768 kHz tuning fork crystal Aging Shock ±1 ppm/year TYP ±3 ppm/year MAX 5,000 g, 0.3 ms, 1/2 sine Vibration 20 g, 10 - 2000 Hz swept sine Operating Temperature Ranges -10OC to +70OC (Commercial) -40OC to +85OC (Industrial) -55OC to +125OC (Military) +25OC to +150OC (High Temperature) IDD (µA) IDD (µA) No load 15 pF load 1.8 0.6 1.5 2.5 0.8 2.0 3.0 0.9 2.5 3.3 1.0 2.8 5.0 1.7 4.5 The current consumption IDD under a capacitive load CL is higher than the current I0 under no load by IDD = I0 + f CL VDD, where f = 32.768 kHz. ENABLE/DISABLE OPTIONS (T/N) 1. Available voltages: 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V at ±10% tolerance. 2. Other tolerances available. 3. Frequency stability over the temperature range based on the formula: 2 2 -0.035 ppm/OC x(T - 25OC) ELECTRICAL CHARACTERISTICS All parameters are measured at ambient temperature with a 10 MΩ and 15 pF load with VDD 1.6 V to 5.5 V. PARAMETER MIN Output Voltage High Output Voltage Low TYP VDD - 0.4 V VDD 0 Rise Time (10%-90%) Fall Time (10%-90%) Duty Cycle 45 50 For the 32.768 kHz LFXOTF, Statek offers two enable/disable options: T and N. The T-version has a tri-state output and continues to run internally when the output is put into the high Z state. So, the T-version offers very fast output recovery when the oscillator is re-enabled. The N-version does not have PIN 1 connected internally and so has no enable/disable capability. MAX UNIT V 0.4 V 100 ns 100 ns 55 % HOW TO ORDER 32.768 kHz LFXOTF OSCILLATORS/ULTRA LOW POWER LFXOTF 4 S N SM5 1 = 1.8V 2 = 2.5V 3 = 3.0V 4 = 3.3V 5 = 5.0V Blank = Standard S = Special Enable/Disable Option T or N Termination Blank = SM1 = Gold Plated (Pb Free) SM3 = Solder Dipped SM5 = Solder Dipped (Pb Free) 32.768K Frequency K = kHz , 30 Calibration Tolerance @ 250C (in ppm) / I Operating Temperature Range C = -10OC to +70OC I = -40OC to +85OC M = -55OC to +125OC S = Customer Specified 10195 Rev B STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com