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EM38GT5-32.768K-2.5-30 Datasheet(PDF) 1 Page - EUROQUARTZ limited |
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EM38GT5-32.768K-2.5-30 Datasheet(HTML) 1 Page - EUROQUARTZ limited |
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1 / 1 page EURO QUARTZ EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk TCXO EM38GT Series DESCRIPTION Package pin outs compatible with 14 pin DIL Frequency range: 20.0 to 50.0kHz; 32.768kHz Supply voltage 3.3 or 5.0 Volts Frequency stability from ±1ppm over -30 to +75°C RoHS compliant EM38GT series TCXOs are packaged in a miniature 6 pad ceramic SMD package. With squarewave (CMOS) output, tolerances are available from ±1.0ppm over -30° to +75°C. The part has a 0.01mF decoupling capacitor built in. EM38GT - OUTLINES AND DIMENSIONS FREQUENCY STABILITY Frequency +3.3 V 32.768kHz 8.0mA 50kHz 12mA CURRENT CONSUMPTION SPECIFICATION Product Series Code TCXO: EM38GT VCTCXO: VEM38GT Frequency Range: 32.768kHz Standard frequency 20.0kHz to 50.0kHz Output Waveform: Squarewave Initial Calibration Tolerance Models with mech. trimmer: <1.0ppm (at t. 25°±2°C) Models without trimmer: <2.0ppm (at t. 25°±2°C) Operating Temperature Range: See table Frequency Stability vs. Ageing: ±1.0 ppm max. first year vs. Voltage Change: ±0.3 ppm max. ±5% change vs. Load Change: ±0.3 ppm max. ±10% change vs. Reflow: ±1ppm max. for one reflow (Measured after 24 hours) Supply Voltage: +3.3 or +5.0Volts (Specify when ordering) Output Logic Levels: Logic High: 90% Vdd min. Logic Low: 10% Vdd max. Rise and Fall Times: 10ns max. Duty Cycle: 50%±5% Start-up Time: 2ms typical, 5ms max. Current Consumption: See table below Output Load: 15pF Storage Temperature: -55~+125°C PART NUMBERING PROCEDURE Example: EM38GT33-32.768k-2.5/-30+75 Supply Voltage 33 = 3.3 VDC 5 = 5.0 VDC Frequency (kHz) Stability over OTR (±ppm) Operating Temperature Range (OTR) (°C) Lower and upper limits. Series Description TCXO = EM38GT VCTCXO = VEM38GT Control Voltage: Standard = +1.5±1.0Volts for all input voltages. (Contact technical sales if +2.5±2.0 Volts is required.) Frequency Deviation: ±6.0 ppm min. Slope Polarity: Positive (increase of control voltage increases output frequency.) Input Impedance: 10k min. Modulation Bandwidth: 3.0kHz min. measured at -3dB Linearity: 10% max. VEM38GT VOLTAGE CONTROL SPECIFICATION HCMOS 14 pin DIL compatible, kHz Range Frequency Stability (ppm) ±0.5 ±1.0 ±1.5 ±2.0 ±2.5 Temperature Range (°C) 0 ~ +50 ASK P P P P -10 ~ +60 x P P P P -20 ~ +70 x x P P P -30 ~ +75 x x x P PP -40 ~ +85 x x x x P P = available, x = not available, ASK = call Technical Sales FREQUENCY STABILITY |
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