 |
Nominal Frequency |
1.000MHz to 87.000MHz, 93.000MHz to 175.000MHz |
|
The specified reference or "center" frequency of the oscillator.
Typically specified in megahertz (MHz)or kilohertz (kHz).
|
|
Frequency Tolerance/Stability
|
(Inclusive of all conditions: Calibration Tolerance at 25°C, Frequency
Stability over the Operating Temperature Range, Supply Voltage Change, Output
Load Change, First Year Aging at 25°C, 260° Reflow, Shock and Vibration)
±100ppm Maximum
±50ppm Maximum |
|
This "inclusive" specification is the amount of frequency deviation
from the center frequency associated with a set of operating
conditions. These conditions include: Operating Temperature Range,
Supply Voltage, and Output Load. This parameter is specified with a
maximum and minimum frequency deviation, expressed in percent (%)
or parts per million (ppm).
|
|
Operating Temperature Range
|
-20°C to +70°C
-40°C to +85°C |
|
The maximum and minimum temperatures that
the oscillator device can be exposed to during oscillation. Over this
temperature range, all of the specified device operating
parameters are guaranteed.
|
|
Supply Voltage (VDD)
|
2.5VDC ±10% |
|
The DC input voltage necessary for oscillator operation, specified in
volts.
|
|
| Maximum Supply Voltage |
-0.5VDC to +3.65VDC |
|
Input Current
|
25mA Maximum over Nominal Frequency of 1.000MHz to 25.000MHz (Unloaded; VDD=2.5VDC)
35mA Maximum over Nominal Frequency of 25.000001MHz to 175.000MHz (Unloaded; VDD=2.5VDC) |
|
The amount of current consumption by an oscillator from the power
supply, typically specified in milliamps (mA).
|
|
Output Voltage Logic High (VOH)
|
90% of VDD Minimum (IOH=-8mA) |
|
Defined as the Output Voltage Logic High or "Logic 1"
(Figure 1 in oscillator
glossary of terms).
|
|
Output Voltage Logic Low (VOL)
|
10% of VDD Maximum (IOL=+8mA) |
|
Defined as the Output Voltage Logic Low or "Logic 0"
(Figure 1 in oscillator
glossary of terms).
|
|
Duty Cycle
|
Measured at 50% of waveform
50 ±5(%) over Nominal Frequency of 1.000MHz to 125.000MHz
50 ±10(%) over Nominal Frequency of 125.000001MHz to 175.000MHz |
|
The measure of output waveform uniformity. This term, also referred
to as symmetry, is a measurement of the time that the output
waveform is in a logic high state, expressed as a percentage (%).
This parameter is measured at a specified voltage threshold or at a
percentage of the output waveform amplitude (Figure 1 in the oscillator glossary of terms).
|
|
Rise Time/Fall Time
|
Measured from 20% to 80% of waveform
2nSec Maximum
|
|
The Rise Time, measured in nanoseconds (nSec), is defined as the
transition time from an output logic low to an output logic high.
Conversely, the Fall Time, also measured in nanoseconds (nSec), is
defined as the transition time from an output logic high to an output
logic low. This transition time is measured at specified voltage
thresholds or at specified percentages of the output waveform
amplitude
(Figure 1 in the oscillator glossary of terms).
|
|
Load Drive Capability
|
15pF Maximum |
|
The maximum load the oscillator can drive specified in terms of the
number of gates or the type of load circuit (Figures 2, 3 and 4 in oscillator glossary of terms).
|
|
| Output Logic Type |
LVCMOS |
|
| Output Control Function |
Tri-State (Disabled Output: High Impedance)
Power Down (Disabled Output: Logic Low)
Spread Disable (Spread Spectrum On Output: Disabled) |
|
| Power Down Input Voltage(Vih and Vil) |
70% of VDD Minimum or No Connect to Enable Output, 30% of VDD
Maximum to Disable Output(Disabled Output: Logic Low) |
|
| Tri-State Input Voltage(Vih and Vil) |
70% of VDD Minimum or No Connect to Enable Output, 30% of VDD
Maximum to Disable Output (Disabled
Output: High Impedance) |
|
| Standby Current |
50µA Maximum (Disabled Output: Logic Low) |
|
| Disable Current |
20mA Maximum (Disabled Output: High Impedance) |
|
| Spread Spectrum Input Voltage(Vih and Vil) |
70% of VDD Minimum or No Connect to Enable Spread Spectrum On Output, 30% of VDD
Maximum to Disable Spread Spectrum On Output (Spread Spectrum On Output: Disabled) |
|
| Spread Spectrum |
±0.25% Center Spread (Not Available with Spread Disable Output Control Function)
±0.50% Center Spread (Not Available with Spread Disable Output Control Function)
±1.00% Center Spread (Not Available with Spread Disable Output Control Function)
-0.50% Down Spread
-1.00% Down Spread
-2.00% Down Spread
|
|
| Modulation Frequency |
30kHz Minimum, 32kHz Typical, 35kHz Maximum |
|
| Period Jitter |
Cycle to Cycle; Spread Spectrum-On; Fo=133.333M, VDD=2.5VDC
40pSec Maximum |
|
Aging (at 25°C)
|
±1ppm Maximum First Year |
|
The systematic change in frequency with time due to internal changes in the crystal. Aging
is often expressed as a maximum value in parts per million per year (ppm/yr). The rate of
aging is typically greatest during the first 30 to 60 days after which time the aging rate
decreases. The following factors effect crystal aging: adsorption and desorption of
contamination on the surfaces of the quartz, stress relief of the mounting and bonding
structures, material outgassing, and seal integrity.
|
|
Start Up Time
|
10mSec Maximum |
|
The specified time from oscillator power-up to the time the oscillator
reaches steady state oscillation.
|
|
Storage Temperature
|
-55°C to +125°C |
|
The minimum and maximum temperatures that the device can
be stored or exposed to when in a non-oscillation state. After exposing or
storing the device at the minimum or maximum temperatures for a length of
time, all of the operating specifications are guaranteed over the specified
Operating Temperature Range.
|
|
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