20MHz Oven Oscillator (OCXO)

Frequency: 20MHz
Ambient: ≤20ppb
Aging: ≤±2ppb/day
Frequency Accuracy: ≤±0.3ppm
Operating Temperature Range: -40℃~85℃
Dimension: 9.7*7.5*3.9mm

Ultra-stable oven oscillator delivers ≤±0.3ppm accuracy, ≤20ppb stability, and ≤±2ppb/day aging in a compact 9.7×7.5×3.9mm package. Reliable performance from -40°C to 85°C for telecom, navigation & precision timing.

TECHNICAL INDICATOR

	Parameters	Technical Indicators	Remarks
Output Characteristics	Nominal Frequency	20.000MHz
	Waveform	Squarewave	Load 15PF
	"0“ level	＜0.4V
	"1" level	＞2.4V
	Rise/fall Time	＜4ns
	Duty Cycle	45% ~ 55%
Frequency Stability	Ambient	≤±20ppb	-40～+85℃, fref=(fmax+fmin )/2
	Voltage	≤±5ppb	3.3V±5%
	Load	≤±5ppb	15pF±5%
	Aging	≤±2ppb/day	After 30days
		≤±0.5ppm/year
		≤±4.6ppm/20years
	Reflow Changes	≤±0.5ppm	Recover after 1 hour
	Slope	≤±1ppb/℃	@25℃, temperature change 0.5℃/min
	Maintain 24-hour drift	≤±3ppb	@25℃, after 30 days of operation, the temperature change under constant temperature is ≤±1℃.
	Short Term Frequency Stability	3E-11@0.1s (typ)	Allen deviation, power-on time>1h.
	Frequency Accuracy	≤±0.3ppm	Factory calibration value，+25℃
Power Characteristics	Current	＜600mA	@turn on
	Steady Current	＜250mA	@+25℃
	Voltage	+3.3VDC	Vcc±5%
	Stabilization Time	≤1min
Voltage Control（Frequency Fine Tuning）	Tuning Voltage Range	0～3.3V	Center Voltage +1.65V
	Tuning Range	±1.9～±3.3pp
	Slope	Positive
	Linearity	＜10%
	Input Impedance	≥100KΩ

	Parameters	Technical Indicators		Remarks
Phase Noise		Typ.	Max.	dBc/Hz
	10Hz	-110	-105
	100Hz	-140	-135
	1KHz	-155	-150
	10KHz	-165	-160
	100KHz	-170	-165
Work Environment	Operating temperature	-40℃~85℃
Work Environment	Storage Temperature	-55℃~105℃
Vibration	Test conditions: Amplitude: 0.75mm (5～26HZ); Acceleration: 10g; 10Hz～500Hz; 30min per cycle, 2 hours in each direction (3 directions, X, Y and Z), IEC 68-2-06 Test Fc.
Shocking	50g; 11ms; half sine wave (3 directions, X, Y and Z), IEC 68-2-27 TestEa/Severity 50A
Dimension	9.77.53.9mm
Weight	2g