SiT3373
220 MHz to 725 MHz Ultra-low Jitter Differential VCXO
Description
The SiT3373 is a 220.000001 MHz to 725 MHz
differential MEMS VCXO engineered for low-jitter
applications. Utilizing SiTime’s unique DualMEMS
®
temperature sensing and TurboCompensation
®
technology, the SiT3373 delivers exceptional dynamic
performance by providing resistance to airflow, thermal
gradients, shock and vibration. This device also
integrates multiple on-chip regulators to filter power
supply noise, eliminating the need for a dedicated
external LDO.
The SiT3373 can be factory programmed for any
combination of frequency, stability, voltage, output
signaling, and pull range. Programmability enables
designers to optimize clock configurations while
eliminating long lead times and customization costs
associated with quartz devices where each frequency is
custom built.
The wide frequency range and programmability makes
this device ideal for telecom, networking, and industrial
applications that require a variety of pullable frequencies
and operate in noisy environments.
Refer to Manufacturing Notes for proper reflow profile,
tape and reel dimension, and other manufacturing
related information.
Features
◼ Any frequency between 220.000001 MHz and 725 MHz
accurate to 6 decimal places
(For frequencies 1 MHz to 220 MHz, refer
to SiT3372)
◼ Widest pull range options: ±25, ±50, ±80, ±100, ±150,
±200, ±400, ±800, ±1600, ±3200 ppm
◼ 0.225 ps RMS phase jitter (typ) over 12 kHz to 20 MHz
bandwidth
◼ Frequency stability as low as ±15 ppm
◼ Wide temperature range support from -40°C to 10 5°C
◼ Industry-standard packages: 7.0 x 5.0 mm ,
5.0 x 3.2 mm, 3.2 x 2.5 mm packages
Applications
◼ Cable Modem Termination System (CMTS), Video,
Broadcasting System, Audio, Industrial Sensors,
Remote Radio Head (RRH)
◼ SATA, SAS, 10/40/100/400 Gbps Ethernet, Fibre Channel,
PCI-Express
◼ Optical Transport Network (OTN)
Block Diagram
Figure 1. SiT3373 Block Diagram
3.2 x 2.5 mm Package Pinout
43
1 6
GND
VDD
OUT+
52
NC OUT-
VIN
Figure 2. Pin Assignments (Top view)
(Refer to Table 6 for Pin Descriptions)
