125MHz Ultra-High Stability & Low Phase Noise OCXO (Sine Wave, 5V)

Frequency: 125MHz
Output: Sinewave
Supply Voltage: 5V
Dimension: 51x51mm
Temperature Characteristics: ±0.5ppb@0~70℃

A high-performance 125MHz VC-OCXO featuring exceptional frequency stability of 0.5ppb and an ultra-low phase noise floor of -167dBc/Hz, specifically engineered as a precision reference clock for advanced communication systems and instrumentation.

Product Features:

High Frequency Stability: Achieves temperature stability of ±0.5ppb, ensuring extreme timing precision in demanding environments.

Ultra-Low Phase Noise: Features a low phase noise floor of -167dBc/Hz @ 100KHz, delivering superior signal purity and system sensitivity.

Excellent Warm-up Performance: Rapid stabilization within 5 minutes of power-on for high-reliability operations.

High-Purity Sine Wave Output: Delivers 6.0~10.0dBm sine wave output with exceptional harmonic and spurious suppression.

Precision Voltage Control: Supports 0~5.0V VC input with a ±0.3ppm pulling range for precise frequency fine-tuning and synchronization.

Applications:

Telecommunications: 5G/4G Base Stations, network synchronization units, and core switches.

Test & Measurement: Spectrum analyzers, frequency counters, and high-end signal generators.

Satellite & Aerospace: Satellite earth stations and GPS/BeiDou timing references.

Defense & Radar: High-precision radar systems, electronic warfare, and navigation equipment.

Broadcasting: Digital TV transmitters and professional video synchronization systems.

Specification

	Parameter		Min.	Type	Max.	Unit	Test Condition
Power consumption	Power Supply		4.75	5.0	5.25	VDC	Vcc±5%
	Current	Start-up Current			2000	mA	@Vcc±5%,25℃
	Current	Operating Current			1000	mA	@Vcc±5%,25℃
Output	Nominal Frequency		125			MHz
	Waveform		Sine wave			—--
	Output Power		6.0	8.0	10.0	dBm	Load: 50Ω
	Harmonic				-40	dBc	Load: 50Ω
	Spurious				-80	dBc	Load: 50Ω
	Load			50		Ω
Frequency Stability	Frequency Accuracy (Factory Calibration)		-0.1		+0.1	ppm	+25℃，VC=2.5±0.2V
	Aging	Daily	-0.1		+0.1	ppb
	Aging	Yearly	-10		+10	ppb
	Temperature characteristics		-0.5		+0.5	ppb	0~70℃, fref =(fmax +fmin )/2
	Power Characteristics		-0.5		+0.5	ppb	Vcc±5%
	Load Characteristics		-0.5		+0.5	ppb	Load ± 5%
	Short Term Frequency Stability				0.005	ppb	1s
	Phase Noise	@1Hz			——	dBc/Hz
		@10Hz			-90	dBc/Hz
		@100Hz			-120	dBc/Hz
		@1KHz			-150	dBc/Hz
		@10KHz			-165	dBc/Hz
		@100KHz			-167	dBc/Hz
		@1MHz			-167	dBc/Hz
	Warm-up Characteristics				±0.05	ppm	Frequency deviation at 5 minutes after startup compared to 1 hour after startup
Frequency Tuning	Frequency Adjustment Method		Voltage Regulation (Voltage Control)			—--
	Voltage-Controlled Voltage Input (VC)		0～2.5～5.0			VDC
	Pulling Range		±0.3			ppm
	Slope		Positive			——-
	Linearity				10	%
	Voltage-Controlled Input Impedance		100			KΩ
	Power Supply Ripple				50	mV pk-pk	10Hz to 1MHz
	Reference Voltage Output (Vref)			4.0		VDC	±0.1V
Ambient Temperature	Operating Temperature Range		0		70	℃
Ambient Temperature	Storage Temperature Range		-55		105	℃