The AVS Series are high performance Voltage Controlled Oscillator
designs featuring:
- low phase noise
- linear tuning over majority of frequency range
- constant power output
Typical Phase Noise of AVS500 at 550MHz
These designs employ LC
resonators and active biasing. All components used are
available in tape and reel format suitable for automated surface mount manufacture. The
PCB uses conventional FR4 material.
Key performance data are summarised in the following table:
| Model |
Nominal Frequency
Range (MHz) |
Nominal Power Output (dBm) |
Tuning
Sensitivity
(MHz/V) |
Phase
Noise at 10kHz
(dBc/Hz) |
| AVS400 |
400 - 550 |
4 |
9 - 14 |
-112 |
| AVS500 |
500 - 650 |
2 |
11 - 17 |
-112 |
| AVS700 |
700 - 850 |
0 |
14 - 18 |
-112 |
| AVS750 |
730 - 890 |
0 |
12 - 16 |
-110 |
| AVS850 |
850 - 1080 |
2 |
18 - 25 |
-108 |
| AVS Series Common Characteristics |
| Supply Voltage |
9 volts |
| Supply Current |
20mA (nom) |
| PCB Area |
17.5mm x 17.5mm |
|
AVS Series Technology Summary
(see individual datasheets for further details) |
| Resonator |
Coilcraft "Mini Spring" inductor |
| Resistors |
0603 metal film |
| Capacitors |
0603 NPO ceramic
0603 X7R ceramic
1mF Tantalum |
| Inductors |
0805 RFC (decoupling only) |
Semiconductors
RF Transistor
Varactor diodes
AF Transistor (bias cct) |
SOT123 (Philips/Siemens etc.)
SOD323 (Philips)
SOT123 (Philips/Motorola etc.) |
Notes:
All components are available from multiple sources except the
Coilcraft "Mini Spring" inductor and the Philips
varactor diodes |
|
