SiT3921


1 to 220 MHz, Differential Digitally-controlled XO

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The SiT3921 is a highly flexible, differential DCXO with LVPECL and LVDS outputs. This programmable device supports any frequency, 1 to 220 MHz, along with any combination of voltage (1.8 V, 2.5 V-3.3 V), pull range (±25 ppm to ±200 ppm) and package (3225, 5032, 7050). It enables frequency tuning via a unique one-wire interface, eliminating frequency drift that is caused by board noise and simplifying PLL and clock synchronization design. It comes in 3 industry-standard 6-pin packages (3.2x2.5 mm, 5.0x3.2 mm, 7.0x5.0 mm).

Three industry standard footprints for drop-in replacement of quartz VCXOs with minor design modification
"Specs" "Value"
Oscillator Type DCXO-DE
Frequency 1 to 220 MHz
Frequency Stability (ppm) ±10, ±25, ±50
Phase Jitter (rms) 0.5 ps
Output Type LVPECL, LVDS
Operating Temperature Range (°C) -20 to +70, -40 to +85
Pull Range (ppm) ±25, ±50, ±100, ±200, ±400, ±800, ±1600
Voltage Supply (V) 2.5, 3.3
Package Type (mm²) 3.2x2.5, 5.0x3.2, 7.0x5.0
Features Digitally controlled, Field Programmable
Availability Production
  • Digitally controlled 1 ppb frequency pull resolution
  • Frequency from 1 MHz to 220 MHz
  • Supply voltage of 1.8 V; 2.5 V to 3.3 V
  • Frequency stability from ±10 ppm to ±50 ppm
  • Pull range from ±25 ppm to ±1600 ppm:
  • Eliminating a need for external DAC
  • Customized specification for optimal system performance
  • Easy availability of any device specifications within the operating range

One-wire digital frequency tuning

  • Simpler loop control in software controlled system PLL
  • More consistent PLL bandwidth over operating range
  • Faster calibration and lock time
  • Reduction of modulation harmonics;

Three industry-standard packages

  • Minor modification to existing design using VCXO to adopt the DCXO;

4 to 6 weeks lead time

  • Reduce inventory overhead
  • Mitigate shortage risks

 

  • Networking and communication systems
  • Networked video systems and digitizers
  • Jitter cleaner
  • Networked audio systems
  • Instrumentation
  • Low-bandwidth analog phase locked loop (PLL)
  • FPGA data recovery

Narrow By:

Document Name Type
4L/6L-QFN Package Composition Report (SiT820X, SiT912X, SiT50XX, SiT380X, SiT392X) Composition Reports
Electronics Industry Citizen Coalition Template Other Quality Documents
Manufacturing Notes for SiTime Products Other Quality Documents
SiTime Conflict Minerals Policy Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Warranty on Date Code Other Quality Documents
ISO9001:2015 Certificate of Registration Other Quality Documents
Conflict Minerals Reporting Template Other Quality Documents
SiTime Oscillator Reliability Report (0.18 micron CMOS process products) Reliability Reports
6L-QFN Package Qualification Report - Carsem Reliability Reports
SiT912X Product Qualification Report Reliability Reports
TSMC Wafer SGS Report RoHS/Reach/Green Certificates
Tower Jazz Wafer SGS Report RoHS/Reach/Green Certificates
4L/6L-QFN Package Homogeneous Materials and SGS Report RoHS/Reach/Green Certificates
BOSCH Wafer SGS Report RoHS/Reach/Green Certificates
SiTime Environmental Compliance Declaration RoHS/Reach/Green Certificates
Certificate of Compliance-EU RoHS Declaration RoHS/Reach/Green Certificates
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