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  • 參數(shù)資料
    型號(hào): EM9T28-20.0-2.5/0+50
    廠商: EUROQUARTZ LTD
    元件分類(lèi): XO, clock
    英文描述: TCXO, CLOCK, 20 MHz, HCMOS OUTPUT
    封裝: ROHS COMPLIANT, DIL-8/4
    文件頁(yè)數(shù): 1/1頁(yè)
    文件大?。?/td> 108K
    代理商: EM9T28-20.0-2.5/0+50
    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
    HCMOS, 8 pin DIL, MHz Range
    EM9T Series
    DESCRIPTION
    8 pin DIL industry-standard package with trimmer
    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
    RoHS compliant
    EM9T series TCXOs are packaged in the industry-standard 8 pin DIL
    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.
    EM9T - OUTLINES AND DIMENSIONS
    SPECIFICATION
    Product Series Code
    TCXO:
    EM9T
    VCTCXO:
    VEM9T
    Frequency Range:
    1.25MHz to 156.0MHz
    Output Waveform:
    Squarewave, HCMOS
    Initial Calibration Tolerance:
    <±1.0ppm at +25°±2°C
    Standard Frequencies:
    10.0, 12.8, 13.0, 14.4, 15.36,
    16.384, 19.2, 19.440, 19.68,
    25.0, 20.0, 27.0, 38.880,
    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:
    EM9T33-38.880-2.5/-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 = EM9T
    VCTCXO = VEM9T
    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. (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
    VEM9T VOLTAGE CONTROL SPECIFICATION
    Offset
    10Hz
    100Hz
    1kHz
    10kHz
    100kHz
    Part =
    EM9T33
    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
    +2.8V
    +3.0
    +3.3V
    +5.0 V
    8.192MHz
    2mA
    5mA
    10.0MHz
    3mA
    4mA
    7mA
    77.760MHz
    14mA
    17mA
    32mA
    155.520MHz
    26mA
    35mA
    50mA
    INPUT VOLTAGE & CURRENT CONSUMPTION
    Frequency Stability (ppm)
    ±0.5
    ±1.0
    ±1.5
    ±2.0
    ±2.5
    Temperature
    Range (°C)
    0 ~ +50
    ASK
    P
    -10 ~ +60
    x
    P
    -20 ~ +70
    x
    P
    -30 ~ +75
    x
    P
    PP
    -40 ~ +85
    x
    P
    = available, x = not available, ASK = call Technical Sales
    FREQUENCY STABILITY
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