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CO-285P Sinewave Crystal Oscillators
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CO-285P

Features:
  • Frequency range from 4 to 500 MHz
  • Supply: 15 V
  • Output: +7, +13 dBm with a high level option +30 dBm available
  • Package: PCB Mount Design
  • Reduced Size
  • Extended temp range: −55°C to 125°C
  • Low Phase Noise Option Available
  • Pin only version available

SPECIFICATIONS
Series CO-285P: Reduced Size Line
Frequency 4 MHz to 500 MHz
Output Standard: 0.5 Vrms/50 (+7 dBm)
Option R: 1 Vrms/50 (+13 dBm)
High level option:
1 watt (+30 dBm) available in 2" x 3" x 0.75" package
Supply +15 Vdc ±5%
(Any supply in 12-24 Vdc range optional; supply less than +15 Vdc subject to reduced output level)
Accuracy
(at 25°C)
Standard: ±10 ppm
*Option T: ±1 ppm

*Tuning adjustment settable to ±1 ppm
Temperature Stability
STANDARD: 0°C to +70°C: ±25 ppm  
Option 1: -55°C to +85°C: ±50 ppm  
Option 2: -55°C to +125°C: ±50 ppm
  (not available in CO-287W)
Option 3: 0°C to +50°C: ±3 ppm
  (not available in CO-484, CO-487, CO-287W)
Option 5: 0°C to +50°C: ±5 ppm  
Option 6: 0°C to +50°C: ±10 ppm  
Aging Rate
(typical after 30 days)
Standard: 3 ppm first year, <2 ppm/year thereafter
Option Y: 2 ppm first year, <1 ppm/year thereafter
Phase Noise
(typical 4-100 MHz)
Offset from Carrier
100 Hz
1 kHz
10 kHz
50 kHz
Standard
-100 dBc/Hz
-125 dBc/Hz
-140 dBc/Hz
-145 dBc/Hz
Option L1*
-115 dBc/Hz
-140 dBc/Hz
-150 dBc/Hz
-155 dBc/Hz
Option L2**
-120 dBc/Hz
-145 dBc/Hz
-160 dBc/Hz
-160 dBc/Hz
Noise degrades by 6 dB per octave above 100 MHz
*L1 Option is not available in CO-281, CO-484, CO-487
**L2 Option is available only in CO-233FW and is limited to 200 MHz:
above 100 MHz, output of CO-233FWL2 is restricted to +7 dBm.
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Delete SMA; output pin is on centerline between pins 1 and 6.
RF return is on pin 6.
Dimension in inches
 
Pin
1
2
3
4
5
6
Function
Supply (+)
N/C
0V, Case
0V, Case
0V, Case
0V, Case
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