EURO QUARTZ LSM Series Oscillators Low Power - Low Frequency SMD Oscillator Low current consumption, low frequency from 30kHz Low profile, miniature SMD package Full military testing available Testing to MIL-PRF-55310 available DESCRIPTION LSM series oscillators are precision surface mount oscillators with a frequency range from 30kHz to 200kHz. The part comprises of a hermetically sealed crystal with a hybrid circuit sealed in a ceramic package with a Kovar lid. Full MIL testing is available. OUTLINE & DIMENSIONS SPECIFICATION Frequency Range****: Supply Voltage*: Calibration Tolerance** Code A: Code B: Code C: Frequency Stability*** 0° to +50°C: -20° to +40°C: 30kHz to 200kHz (32.768kHz) 3.3 or 5.0 Volts ±10% ±0.001% (±10ppm) ±0.0025% ±0.01% ±0.0025% typical (±25ppm) ±0.004% maximum (±40ppm) ±0.007% typical (±70ppm) ±0.01% maximum (±100ppm Voltage Coefficient Ageing: Shock: Vibration: Frequency Change vs. Output Load Change: Operating Temperature: Output Voltage (5.0V supply) HIGH: LOW: Rise/Fall Times: Symmetry: Supply Current 5.0V supply: 3.3V supply: Packaging: ±1ppm/V typical ±3ppm/V maximum ±1ppm/year typical ±3ppm/year maximum 1000g, 1ms, ½ sine, ±3ppm max. 10g rms, 10-2000Hz, ±3ppm max. ±1ppm maximum -10° to +70°C Commercial -40° to +85°C Industrial -55° to +125°C Military 4.8V minimum, 4.95V typical 0.2V maximum, 0.05V typical 12ns typical 40/60% maximum, 45/55% typical 15 mA max., 8.3 mA typical 10 mA max., 5.5 mA typical Tray pack (standard) 16mm tape, 17.8cm or 33cm reels ENABLE/DISABLE, POWER DOWN, NOT CONNECTED Option Specifying Code Power Down P Enable/Disable T Not Connected Blank Pad 1* Pad 3 LOW HIGH LOW HIGH NC High Z Frequency output High Z Frequency output Frequency output * Normally HIGH (internal pull-up resistor) ENABLE/DISABLE vs. POWER DOWN P - Power Down: When Pad 1 is LOW the oscillator stops running T - Enable/Disable: When Pad 1 is LOW the internal oscillator continues to run but the output (Pad 3) is in a high impedance (Z) state. Power Down: Enable/Disable: Disabled current consumption low, recovery delayed. Disabled current consumption lower than normal, Recovery immediate. Notes: * ** *** **** Contact factory for lower supply voltages Tighter tolerances avialable Does not include calibration tolerance. Positive variations are small compared to negative variations. Contact factory for frequencies other than 32.7680kHz PART NUMBERING Example: 32.7680kHz LSMA050UMTA Frequency Series Designation LSM Calibration Tolerance (see table above) Stability* 100 = ±100ppm 50 = ±50ppm 25 = ±25ppm Output Universal (CMOS) Operating Temp. Range C = Commercial I = Industrial M = Military Pad 1 Function T = Enable/Disable Blank = not connected Supply Voltage** Blank = 5.0 Volts A = 3.3 Volts * ** For other stability requirements enter figure required. For other supply voltage enter required voltage. EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: [email protected] www.euroquartz.co.uk