EM38T33-32.768K-2.5 EUROQUARTZ | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 1
Technical content
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE TCXO HCMOS, 14 pin DIL compatible, MHz Range EM38T Series
DESCRIPTION
Package pin compatible with 14 pin DIL Wide frequency range: 1.25MHz to 156.0MHz Supply voltage 2.8, 3.0, 3.3 or 5.0 Volts Frequency stability from ±1ppm over -30 to +75°C EM38T series TCXOs are packaged in a conventional through hole- mounted package compatible with 14 pin DIL. 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. EM38T - OUTLINES AND DIMENSIONS SPECIFICATION Product Series Code TCXO: EM38T VCTCXO: VEM38T Frequency Range: 1.25MHz to 156.0MHz Output Waveform: Squarewave, HCMOS Initial Calibration Tolerance: <±1.0ppm at +25°±2°C 40.0, 77.760, 125.0, 155.520 ( Partial list) 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 (SMD type): ±1.0ppm max. for one reflow ( Measured after 24 hours) Mechanical Frequency Tuning: ±3ppm minimum Supply Voltage: +2.8, +3.0, +3.3 or +5.0V ( See table) Output Logic Levels: Logic High: 90% Vdd min. Logic Low: 10% Vdd max. Rise and Fall Times: 10ns max. Duty Cycle: 50%±10% standard, 50%±5% option Start-up Time: 5ms typical, 10ms max. Current Consumption: See table below Output Load: 15pF Storage Temperature: -55~+125°C PART NUMBERING SCHEDULE Example: EM38T33-38.880-2.5/-30+75 Supply Voltage 28 = 2.8VDC 3 = 3.0VDC 33 = 3.3 VDC 5 = 5.0 VDC Frequency (MHz) Stability over OTR (±ppm) Operating Temperature Range (OTR) (°C) Lower and upper limits. Series Description TCXO = EM38T VCTCXO = VEM38TControl 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. (Vcon = +4.5V±1.0V) Slope Polarity: Positive (increase of control voltage increases output frequency.) Input Impedance: 50k minimum Modulation Bandwidth: 20kHz minimum Linearity: ±10% maximum VEM38T VOLTAGE CONTROL SPECIFICATION Offset 10Hz 100Hz 1kHz 10kHz 100kHz Part = M38T33 at 10.0Mhz (dBc/Hz) -115 -135 -148 -152 -155 at 155.250Mhz (dBc/Hz) -72 -110 -125 -132 -125 SSB PHASE NOISE at 25°C Input Voltage/ Frequency 8.192MHz 2mA 2mA 5mA 10.0MHz 3mA 4mA 7mA 77.760MHz 14mA 17mA 32mA 155.520MHz 26mA 35mA 50mA INPUT VOLTAGE & CURRENT CONSUMPTION 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