SmartNICs

SmartNICs (smart network interface cards) are an essential piece of today’s data center infrastructure, offloading the workload of the host processor and enabling expanded services. Reference clocks are a critical component in SmartNICs. These clocks must be resilient under airflow, heat, and vibration. SiTime MEMS timing solutions are built to reliably operate in the tight, hot environments of BBUs and DUs, while consuming less space and power.

SiTime differential oscillators offer low jitter and best-in-class PSNR to improve signal integrity. When IEEE 1588 clock recovery is needed, SiTime Elite Platform® Super-TCXOs® for Data Center Infrastructure are ideal – offering OCXO-grade frequency slope in a TCXO form factor that is small enough to fit on the back of a card.

Download Application Brief

SiTime MEMS Timing Benefits for Data Center Infrastructure Applications

Complete MEMS clock tree

Precision MEMS TCXO

Low jitter differential MEMS XO

More robust in real-world conditions

4x better dF/dT for accurate IEEE 1588

Resistant to airflow and heat

Immunity to power supply noise

Thin profile, easy to use

No cover or shielding

≤1 mm thin that fits back of a card

SmartNICs Block Diagrams

IEEE1588 Enabled, 10/40/100 GbE NIC

10/40/100 GbE NIC

MEMS Timing Solutions for SmartNICs

Devices	Function	Key Features
Super-TCXO SiT5907 20 MHz	IEEE1588 and high-speed SERDES reference clock	±20 ppb up to 70°C, operable to 105°C
Super-TCXO SiT535x 1 to 220 MHz	IEEE1588 and high-speed SERDES reference clock	±100 ppb, ±1 ppb/°C 105°C
Differential XO SiT9501 25 to 644.53125 MHz	High-speed SERDES reference clock	70 fs jitter for Ethernet, 105°C
SiT9375 25 to 644.53125 MHz	High-speed SERDES reference clock	200 fs jitter for Ethernet, 105°C