Email: sales@xtalong.com Tel: +86-28-80192520
Email: sales@xtalong.com Tel: +86-28-80192520
Ultra-Low Jitter for PAM4 Modulation
In PAM4 (4-level Pulse Amplitude Modulation) schemes used in 112G and 224G per lane networking, the signal-to-noise ratio is significantly reduced. Our oscillator delivers an extraordinary typical RMS jitter of 30fs (12kHz to 20MHz). This ultra-pure signal ensures a wider eye opening and a significantly lower Bit Error Rate (BER), providing engineers with the critical margin needed for 800G/1.6T compliance.
312.5MHz Ultra-Low Jitter LVDS SPXO (2520 Size)
Optimized for 800G/1.6T Optical Modules and AI Infrastructure
1. Product Overview ：
Our 312.500MHz LVDS SPXO is a high-performance frequency control solution designed for the next generation of high-speed data communications. Utilizing 3rd Overtone technology, this oscillator delivers a pristine signal with an industry-leading RMS Jitter of 30fs (typical).
With its compact 2520 SMD package and robust -40°C to +105°C operating temperature range, it is the perfect "heartbeat" for high-density AI servers, 800G optical transceivers, and 1.6T networking equipment.
2. Key Features：
Ultra-Low Jitter: 30fs (Typ.) / 50fs (Max.) @ 12kHz–20MHz — Essential for PAM4 modulation and low BER (Bit Error Rate).
Wide Temperature Range: Reliable operation from -40°C to +105°C, suitable for high-heat data center environments.
Advanced Oscillation Mode: 3rd Overtone design for superior phase noise and frequency stability.
Power Efficient: Only 35mA maximum current consumption at 3.3V.
Small Footprint: Standard 2.5 x 2.0 mm SMD package for high-density PCB layouts.
3. Detailed Specifications ：
| Parameter | Value | Unit | Test Condition | ||||
| Min. | Typ. | Max. | |||||
| Power consumption | Power Supply | 2.97 | 3.30 | 3.63 | V | Vcc±5% | |
| Current consumption | ≦35 | mA | operating | ||||
| Current consumption | 30 | μA | Standby | ||||
| Output | Nominal Frequency | 312.5 | MHz | ||||
| Oscillator Mode | 3rd Overtone | ||||||
| Waveform | LVDS | —-- | |||||
| Start-up time | 10 | ms | |||||
| Rise time | 0.26 | 0.4 | ns | 20%~80%Output Swing | |||
| Fall time | 0.28 | 0.4 | ns | 80%~20%Output Swing | |||
| Output Voltage High | 1.43 | 1.60 | V | RL=10DΩ | |||
| Output Voltage Low | 0.90 | 1.10 | V | (Between OUT&OUTN) 0E=High Level,OUT/OUTN | |||
| Frequency Stability | -50 | 50 | ppm | ||||
| RMS Phase jitter | 30 | 50 | fs | 12kHz-20MHz | |||
| Duty Cycle | 45 | 50 | 55 | % | |||
| Differential swing | 0.8 | 2 | V | ||||
| Tri-state | Output enable | 70VDD | % | Output will be enable if OE is logic 1or open, output will be disable of OE is logic 0 | |||
| Output disable | 30VDD | % | |||||
| Output Load | 100 | Ω | |||||
| Ambient Temperature | Operating Temperature Range | -40 | 105 | ℃ | |||
| Storage Temperature Range | -55 | 125 | ℃ | ||||
Dimensions:mm
Phase Noise Plot:
4. Applications：
This 312.5MHz oscillator is specifically engineered for:
Data Centers: 400G, 800G, and 1.6T Optical Transceivers (QSFP-DD, OSFP).
AI & Compute: Reference clocks for GPUs, FPGAs, and high-speed SERDES.
Telecommunications: 5G/6G Base stations and core routers.
Networking: High-speed Ethernet switches and storage area networks (SAN).
5. Technical Support & Inquiry：
Need samples or a full datasheet?
Our engineering team provides full support for jitter analysis and circuit matching.
312.5MHz LVPECL output Differential Oscillator SMD 2.0*1.6mm datasheet
Contact: Katya Vane
Phone: +86-18884136031
Tel: +86-28-80192520
Email: sales@xtalong.com
Add: No.4 of XinHang Road, West of High-tech zone, Chengdu City 611731, China
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