Ultra-Low Jitter Oscillators
Optimized for Optical Transceivers
The demand for increased network bandwidth and faster data rates has driven the need for lower jitter clocks to reduce noise in systems. Ultra-low jitter clock oscillators are essential for supporting optical modules including QSFP, OSFP, and CFP2 optical transceivers commonly used in networking and data center applications. Digital Signal Processors (DSP) used inside optical transceivers at both ends of the fiber optic link, allow simpler circuitry, improved optical performance and increased transmission speeds to 800G and beyond. As a result, DSPs require high frequency, ultra-low jitter clock oscillators as a frequency reference. These oscillators typically cover a frequency range from 156.25 MHz to 625 MHz, offer various output logic options such as LVDS and LVPECL, and are housed in packages, as small as 2.5 × 1.6 mm, to minimize board space. By providing clock signals with jitter levels below 60 femtoseconds, these oscillators enable optical transceivers to meet the increasing demands for higher bandwidth and faster data rates in networking and data center applications.
Raltron’s complete line of oscillators are designed to be compatible with or to serve as a reference design for some of the foremost optical DSPs used in optical transceivers.
Applications:
- Optical Transceivers
- Networking and Data Centers
- High-speed Ethernet Implementations
- Long-haul Applications
- Precision Optical Instrumentation and Test Equipment
- Optical Engines

LVDS MHz Clock Oscillators – Ultra Low Jitter
Part Number | ECAD | Datasheet | Image | Size (mm) | Output | Oscillation Mode | Supply Voltage (V) | Frequency (MHz) | Stability (ppm) | Jitter (fs) | Contact Us / Buy Now |
---|---|---|---|---|---|---|---|---|---|---|---|
2.0 x 1.6 |
LVDS |
Fundamental |
1.8 |
156.25 |
±50 |
47.8 typ |
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2.0 x 1.6 |
LVDS |
Fundamental |
1.8 |
156.25 |
±50 |
47.8 typ |
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2.0 x 1.6 |
LVDS |
Fundamental |
3.3 |
156.25 |
±100 |
50 max |
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2.0 x 1.6 |
LVDS |
Fundamental |
2.5~3.3 |
156.25 |
±50 |
50 max |
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2.5 x 2.0 |
LVDS |
Fundamental |
2.5~3.3 |
156.25 |
±50 |
50 max |
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2.5 x 2.0 |
LVDS |
Fundamental |
1.8 |
156.25 |
±50 |
47.8 typ |
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2.5 x 2.0 |
LVDS |
Fundamental |
1.8 |
156.25 |
±50 |
47.8 typ |
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3.2 x 2.5 |
LVDS |
Fundamental |
1.8 |
156.25 |
±50 |
47.8 typ |
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3.2 x 2.5 |
LVDS |
Fundamental |
2.5~3.3 |
156.25 |
±50 |
50 max |
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2.5 x 2.0 |
LVDS |
Fundamental |
1.8 |
312.5 |
±20 |
50 max |
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2.5 x 2.0 |
LVDS |
3rd Overtone |
2.5 |
312.5 |
±50 |
50 max |
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2.5 x 2.0 |
LVDS |
Fundamental |
3.3 |
312.5 |
±50 |
47.8 typ |
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3.2 x 2.5 |
LVDS |
3rd Overtone |
3.3 |
625 |
±25 |
30 max |
LVPECL MHz Clock Oscillators – Ultra Low Jitter
Part Number | ECAD | Datasheet | Image | Size (mm) | Output | Oscillation Mode | Supply Voltage (V) | Frequency (MHz) | Stability (ppm) | Jitter (fs) | Contact Us / Buy Now |
---|---|---|---|---|---|---|---|---|---|---|---|
2.0 x 1.6 |
LVPECL |
Fundamental |
3.3 |
156.25 |
±50 |
50 max |
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2.0 x 1.6 |
LVPECL |
Fundamental |
2.5~3.3 |
156.25 |
±50 |
50 max |
|||||
2.5 x 2.0 |
LVPECL |
Fundamental |
3.3 |
156.25 |
±50 |
70 max |
|||||
2.5 x 2.0 |
LVPECL |
Fundamental |
3.3 |
156.25 |
±50 |
50 max |
|||||
2.5 x 2.0 |
LVPECL |
Fundamental |
2.5~3.3 |
156.25 |
±50 |
50 max |
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3.2 x 2.5 |
LVPECL |
3rd Overtone |
3.3 |
312.5 |
±50 |
33 typ |
HCSL MHz Clock Oscillators – Ultra Low Jitter
Part Number | ECAD | Datasheet | Image | Size (mm) | Output | Oscillation Mode | Supply Voltage (V) | Frequency (MHz) | Stability (ppm) | Jitter (fs) | Contact Us / Buy Now |
---|---|---|---|---|---|---|---|---|---|---|---|
2.0 x 1.6 |
HCSL |
Fundamental |
1.8 |
156.25 |
±50 |
50.7 typ |
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2.0 x 1.6 |
HCSL |
Fundamental |
1.8 |
156.25 |
±100 |
50.7 typ |
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2.0 x 1.6 |
HCSL |
Fundamental |
2.5 |
156.25 |
±50 |
38.4 typ |
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2.0 x 1.6 |
HCSL |
Fundamental |
3.3 |
156.25 |
±50 |
44.2 typ |
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2.5 x 2.0 |
HCSL |
Fundamental |
1.8 |
156.25 |
±50 |
50.7 typ |
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2.5 x 2.0 |
HCSL |
Fundamental |
2.5 |
156.25 |
±50 |
38.4 typ |
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2.5 x 2.0 |
HCSL |
Fundamental |
3.3 |
156.25 |
±50 |
44.2 typ |
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3.2 x 2.5 |
HCSL |
Fundamental |
1.8 |
156.25 |
±50 |
50.7 typ |
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3.2 x 2.5 |
HCSL |
Fundamental |
2.5 |
156.25 |
±50 |
38.4 typ |
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3.2 x 2.5 |
HCSL |
Fundamental |
3.3 |
156.25 |
±50 |
44.2 typ |