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Spread-Spectrum Clock Oscillators

FCom spread-spectrum oscillators distribute clock energy across a wider frequency range to reduce peak spectral amplitude in compatible digital systems. Choose center-spread or down-spread options across 3–200 MHz for automotive, industrial, medical and networking applications.

Choose the Right Spread-Spectrum Architecture

Center Spread

The output frequency moves both above and below the nominal frequency.

Available options: ±0.125% to ±2.0%

Down Spread

The output frequency is modulated below the nominal frequency without exceeding the specified upper clock limit.

Available options: ±0.25% to ±4.0%

No Spread (Off)

Disables modulation to output a standard, unmodulated digital clock profile.

Baseline Radiated Profile (0 dB)

Verified Under Defined Test Conditions

Spread-spectrum behavior is evaluated under defined output-frequency, modulation and measurement conditions to confirm the intended spread profile and peak-reduction characteristics.

*Production verification scope and spectrum documentation are available according to product series and project requirements.

How Spread Spectrum Reduces Clock Peaks

Spread-spectrum modulation varies the clock frequency slowly over time, distributing spectral energy across a wider frequency range and reducing the peak amplitude of the fundamental and its harmonics.

Spread Type

Spread Percentage

Modulation Rate

Peak Attenuation

Clock Tolerance

Spread Spectrum Oscillator Portfolio

Compare available spread-spectrum oscillators by frequency, spread profile, modulation range, package, and supply voltage.

Picture	Series	Package	Frequency Range	Supply Voltage	Tightest Stability	Temp. Range	Output	Input Current	Spread Options	Mount	Contact
Spread Spectrum Oscillator
	FCO-2C-LE	2520 4-SMD	16 - 40 MHz	1.8 V, 2.5 V, 3.3 V	±25 ppm	-40 to +125℃	CMOS	1.5 - 6 mA	Center 0.4 - 1% Down 0.8 - 2%	SMD	Inquiry
	FCO-3C-LE	3225 4-SMD	16 - 40 MHz	1.8 V, 2.5 V, 3.3 V	±25 ppm	-40 to +125℃	CMOS	1.5 - 6 mA	Center 0.4 - 1% Down 0.8 - 2%	SMD	Inquiry
	FCO-5C-LE	5032 4-SMD	16 - 40 MHz	1.8 V, 2.5 V, 3.3 V	±25 ppm	-40 to +125℃	CMOS	1.5 - 6 mA	Center 0.5 - 1% Down 1 - 2%	SMD	Inquiry
	FCO-7C-LE	7050 4-SMD	16 - 40 MHz	1.8 V, 2.5 V, 3.3 V	±25 ppm	-40 to +125℃	CMOS	1.5 - 6 mA	Center 0.5 - 1% Down 1 - 2%	SMD	Inquiry
	FCO-5P-LE	5032 4-SMD	3 - 200 MHz	2.5 V, 3.3 V	±25 ppm	-40 to +125℃	CMOS	20 - 30 mA	Center 0.125 - 2% Down 0.25 - 4%	SMD	Inquiry
	FCO-7P-LE	7050 4-SMD	3 - 200 MHz	2.5 V, 3.3 V	±25 ppm	-40 to +125℃	CMOS	20 - 30 mA	Center 0.125 - 2% Down 0.25 - 4%	SMD	Inquiry
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