CX5228A High stability and low phase noise crystal oscillator

Learn about our high stability and low phase noise crystal oscillators

The CX5228A is a highly stable, low-phase-noise oven-controlled crystal oscillator (OCC). It utilizes a high-Q crystal resonator, offering excellent frequency stability and phase-noise performance. Operating in a temperature range of -20°C to +70°C, it features an aging rate better than 3E-10/day and a 1Hz phase noise rating of -126dBc/Hz. It is widely used in communications, navigation, radar, reconnaissance, high-end instruments, and high-end audio systems.

Learn about our high stability and low phase noise crystal oscillators

Important Features

Operating temperature range -20℃ ~+70℃
Near-end phase noise up to ≤ -123dBc/Hz@1Hz
Frequency stability ADEV, the lowest up to 1.5E-13/1s
+12VDC power supply

Important Features

Test Item	Condition	Technical Indicators
Frequency stability（1s@10MHz）	standard	≤5×10-¹³
Frequency stability（1s@10MHz）	Option A1	≤3×10-¹³
Frequency stability（1s@10MHz）	Option A2	≤2×10-¹³
Frequency stability（1s@10MHz）	Option A3	≤1.5×10-¹³
Phase noise	1Hz	Standard：≤-113；B1：≤-116；B2：≤-118；B3：≤-123
Phase noise	10Hz	Standard：≤-140；B1：≤-143；B2：≤-145；B3：≤-145
Phase noise	100Hz	Standard：≤-150；B1：≤-155；B2：≤-155；B3：≤-155
Phase noise	1kHz	Standard：≤-155；B1：≤-160；B2：≤-160；B3：≤-160
Phase noise	10kHz	Standard：≤-163；B1：≤-165；B2：≤-165；B3：≤-165
Phase noise	100kHz	Standard：≤-163；B1：≤-165；B2：≤-165；B3：≤-165
Aging rate	1 day	Standard：≤5×10⁻¹⁰；OptionC1：≤3×10⁻¹⁰
Aging rate	1 month	≤5 × 10-⁹
Aging rate	The first year	≤5×10-⁸
Aging rate	Ten years	≤2.5×10-⁷
Frequency control	Pressure control voltage range	0~5V，Positive slope
Frequency control	Frequency regulation range	≥±2.5×10-⁷
Temperature frequency characteristics		≤±5×10-⁹
Voltage frequency characteristics		≤±5×10-¹⁰
Load frequency characteristics		≤±5×10-¹⁰
Wave shape		Sine wave
Output power		≥5dBm
Output impedence		50Ω
Harmonic		≤-40dBc
Clutter		≤-80dBc
Working temperature		-20℃~+70℃
Storage temperature		-40℃~+85℃
power supply		+12VDC
Electric current		≤0.6A
External Dimension		50mm×50mm×19mm

Typical phase noise

Frequency stability typical value

Product Model List

Specifications		T710	T760	T640	T770	TRA85	TRS75	TCA55	TRM60	CX5228	CX910
External Synchronization Input	GNSS	✓	✓	✓	✓	—	—	—	—	—	—
	1PPS	✓	—	—	✓	✓	✓	✓	✓	—	—
	10MHz	—	—	—	✓	—	—	—	—	—	—
Frequency Output	10 MHz sine wave	8-channel	4-channel	4-channel	Route 5	1-way	1-way	—	—	1-way	4-channel
	10 MHz square wave	Route 6	—	—	—	—	—	1-way	1-way	—	—
	Optional	1/5 MHz	100MHz	100MHz	5/100 MHz	—	—	—	—	—	—
		—	NTP	IRIG-B	—	—	—	—	—	—	—
Stability	1s	<3E-12	<5E-12	<3E-12	≤4E-13	≤ 3×10⁻¹²	≤ 6×10⁻¹²	≤ 8×10⁻¹¹	≤ 3×10⁻¹¹	≤ 1.5×10⁻¹³	≤ 1.1×10⁻¹³
	10s	<3E-12	<5E-12	<3E-12	≤3E-13	≤ 1.5×10⁻¹²	≤ 2×10⁻¹²	≤ 2.5×10⁻¹¹	≤ 1×10⁻¹¹	≤2×10-¹³	≤2×10-¹³
	100s	<3E-13	<5E-13	<5E-12	≤7E-14	≤ 5×10⁻¹³	≤ 6×10⁻¹³	≤ 8×10⁻¹²	≤ 3×10⁻¹²	≤4×10⁻¹³	≤5×10-¹³
	Day (GNSS Lock)	<1E-12	<1E-12	<1E-12	≤3E-14	—	—	—	—	—	—
Phase noise	1Hz	≤-95dBc/Hz	≤-95dBc/Hz	≤ -100 dBc/Hz	≤-120dBc/Hz	≤ -95 dBc/Hz	≤ -85 dBc/Hz	≤ -50 dBc/Hz	≤ -85 dBc/Hz	≤ -123	-126*
	10Hz	≤-130dBc/Hz	≤-130dBc/Hz	≤-130dBc/Hz	≤-140dBc/Hz	≤ -130 dBc/Hz	≤ -120 dBc/Hz	≤ -80 dBc/Hz	≤ -120 dBc/Hz	≤ -145	≤ -148
	100Hz	≤-145dBc/Hz	≤-145dBc/Hz	≤-145dBc/Hz	≤-155dBc/Hz	≤ -150dBc/Hz	≤ -145dBc/Hz	≤ -115 dBc/Hz	≤ -140dBc/Hz	≤ -155	≤ -155
	1kHz	≤-155dBc/Hz	≤-155dBc/Hz	≤-160dBc/Hz	≤-160dBc/Hz	≤ -160dBc/Hz	≤ -150dBc/Hz	≤ -130 dBc/Hz	≤ -140dBc/Hz	≤ -160	≤ -160
	10kHz	≤-158dBc/Hz	≤-158dBc/Hz	≤-160dBc/Hz	≤-160dBc/Hz	≤ -160dBc/Hz	≤ -155dBc/Hz	≤ -140dBc/Hz	≤ -145dBc/Hz	≤ -165	≤ -163
distortion	Harmonic	≤-45dBc	≤-45dBc	≤-45dBc	—	≤ -30dBc	≤ -30dBc	—	≤ -80dBc	≤ -40dBc	≤ -40dBc
	Non-harmonic	≤-80dBc	≤-80dBc	≤-80dBc	—	≤ -80dBc	≤ -70dBc	—	—	≤ -80dBc	≤ -80dBc
Pulse output	Number of way	4	4	4	4	1	1	1	1	—	—
	Synchronization accuracy	20ns	20ns	20ns	10ns	—	—	—	—	—	—
Frequency drift rate	/day	—	—	—	—	±5×10⁻¹³	±1×10⁻¹²	≤3×10-¹¹¹	±3×10⁻¹²	≤3×10-¹⁰	≤1×10-¹⁰
Physical and Electrical Characteristics	Working temperature	-10℃~+55℃	-10℃~+55℃	-10℃~+55℃	-10℃~+55℃	-40℃~+65℃	-40℃~+65℃	-40℃~+85℃	-40℃~+75℃	-20℃~+70℃	0℃~+40℃
	Cunjian Temperature	-45℃~+85℃	-45℃~+85℃	-45°C to +75°C	-55°C to +85°C	-40℃~+85℃	-40℃~+85℃	-55℃~+125℃	-55℃~+100℃	-40℃~+85℃	-55℃~+125℃
	power supply	220V±20%	220V±20%	220V±20%	220V±20%	+12V to +15V or +24V	+12V–+15V, ±41 TP3T	+3.3V±5%	+5V±4%	+12VDC	+14 to +125°C
	Rate of work	50W	60W	60W	70W warm-up, steady-state ≤ 30W	Warm-up ≤ 45 W, steady-state ≤ 15 W	Start-up power ≤ 28.5 W, steady-state power ≤ 14.5 W	Warm-up ≤ 10 W, steady-state ≤ 1.8 W	Warm-up ≤ 15 W, steady-state ≤ 8 W	≤7.2 W	≤27 W
	External Dimension	2U half-width	2U	2U	2U	116mm×79mm×38mm	68mm×68mm×18mm	41mm×36mm×17mm	51mm×51mm×18mm	50mm×50mm×19mm	5 inches × 3 inches × 3 inches
	Weight	2Kg	5 kg	3.5 kg	5 kg	≤500g	≤300 g	≤50 g	<100g	—	—
Well-behaved and punctual	After 24h of synchronization	200 ns	200 ns	10 us	30 ns (20 days after synchronization)	≤1 µs after 24 hours of synchronization	≤1 us	—	≤1 us	—	—

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