High Frequency
Oscillators
Introduction
Package Options
Package Drawings
Ordering
Custom Oscillators
Oscillator Home
Standard Oscillators
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High Frequency Oscillator Package Options
| Specification |
Performance |
Package |
| Nominal Frequency |
30 MHz to 500 MHz
30 MHz to 100 MHz
30 MHz to 160 MHz |
B1,B2, D1, D2
B, D
E |
| Supply Voltage |
+5.0 to +15.0 volts |
B, B1, B2, D, D1, D2, E |
| Supply Current |
20 to 50mA (frequency dependant) |
B, B1, B2, D, D1, D2, E |
Logic Output
Waveform
Logic Levels
Fan Out
Mark Space Ratio
Fall & Rise Ratio |
Squarewave HCMOS/LSTTL/FTTL
Low <+0.4V High >+4.5V
30pF or 5 LSTTL Gates
55:45 at 45:55 at: +2.5V HCMOS +1.4V TTL
1ns to 5ns (frequency dependant) |
B, B1, B2, D, D1, D2, E |
Sinewave Output
Waveform
Output Level
Load Impedance
Distortion |
A.C. coupled sinewave
0dBm minimum
50W
See 'Additional Notes' below |
B, B1, B2, D, D1, D2 |
Adjustment Method
External Potentiometer
Internal Trimmer
External Voltage |
±5.0ppm min. via an external 10kW potentiometer.
±5.0ppm min. via an internal trimmer capacitor.
±100ppm min. via a control voltage of +0.5 to +4.5V |
B, D
B1, D1
B2, D2, E |
Stability
With Time
With Voltage
With Load
With Temperature |
±1.0ppm per year maximum at +25°C
±2.0ppm per year maximum at +25°C
±0.3ppm for a ±5% change in supply voltage
±3.0ppm for a ±10% change in load impedance
±0.5ppm for a ±10% change in load impedance
See temperature tables on
ordering page |
B, B1, D, D1
B2, D2, E
B, B1, D, D1
B2, D2, E
B, B1, B2, D, D1, D2, E |
Customised
Oscillators
These types of customised oscillators represent only our most popular units from a much
wider range. As with all frequency control products the majority of users require unique
specifications for many of their products. Hy-Q specialise in custom designs and
hence any criteria which is not met from our standard range can usually be incorporated
into a custom design. Whatever the requirement, even if it seems well outside the range of
the standard products on offer, our technical staff are always available to discuss your
application and decide upon the device specifications that best suit your needs.
| General
Note |
| Ageing: |
Ageing specifications are based on
experience of our previously manufactured devices and are not explicitly guaranteed. |
Additional Notes
When deciding upon package styles for oscillators, especially high frequency
types, it is very important to consider harmonic content requirements. The size of the
package dictates the type and number of poles of the filter which can be internally added
to the oscillator output circuit. As package size increases, additional filtering can be
added, and hence, improved harmonic suppression is achieved. Harmonic suppression is on of
the factors most often overlooked by designers when specifying oscillator performance. It
is also wise to consider the range of frequency pulling required when specifying a VCXO or
TCXO.
Designers should pay attention to the following activities to achieve best
overall oscillator performance when in use:
1. Very low noise power supplies must be used for all supply lines.
2. All power supply returns must be connected directly to the oscillator ground point.
3. All tracks and leads must me kept as short as possible.
4. The oscillators output must be correctly and accurately terminated.
5. Appropriate decoupling capacitors must be added between the supply and ground.
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