SiTime, Silicon MEMS Oscillators and Clock Generators

SiT5001: High Performance MEMS VCTCXO (1-80 MHz, ±5 ppm)

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4pin MEMS VCTCXO is pin compatible with crystal TCXO

The SiT5001 is the most flexible LVCMOS/LVTTL/HCMOS compatible, MEMS VCTCXO (Voltage Controlled, Temperature Compensated Oscillator) solution in the market. This device supports any combination of the following features: frequency (up to 80MHz), voltage (1.8V, 2.5V-3.3V), stability (±5 ppm), pull range (±12.5 ppm to ±50 ppm) and 4-pin packages (2520, 3225, 5032, 7050). It provides superior shock and vibration resistance, and 2 FIT reliability that is 10 times better than crystal VCTCXO and TCXO oscillators and is ideal for high reliability applications in telecom, networking, wireless and embedded. SiTime's MEMS devices are 100% compatible with legacy quartz crystal VCTCXO and TCXO oscillators in footprint and package, and replace these devices without any design changes.



Frequency Range (MHz) 1 – 80
Frequency Stability (ppm) ±5
RMS Integrated Phase Jitter (12 kHz to 20 MHz) < 1ps (max.), (0.5 typical)
Pull Range (ppm) ±12.5, ±25, ±50 or turned off
Voltage Control Option
Control Voltage (V) 0 to VDD
Supply Voltage (V) 1.8, 2.5 - 3.3 (continuous)
Temp Range (°C) -40 to +85 (Industrial), -20 to +70 (Extended Commercial)
SoftEdge Rise/Fall Time Control 1ns - 6ns
Package LxWxH (mm) 2.5x2.0x0.75, 3.2x2.5x0.75, 5.0x3.2x0.75, 7.0x5.0x0.9


  • Telecom equipment
  • Wireless
  • GPS
  • Networking and communication systems
  • Instrumentation
  • Embedded

Features Benefits
  • Best programmability
    • Any frequency from 1MHz to 80MHz with 6 decimal places of accuracy and no coverage gaps that are always present in crystal VCTCXO and TCXO oscillators
    • Supply voltage of 1.8V, 2.5V to 3.3V
    • Frequency stability ±5 ppm
    • Voltage control option, pull range from ±12.5 pppm to ±50 ppm
    • Configurable drive strength
  • Customized specification for optimal system performance
  • Easy availability of any device specification within the operating range
  • Superior Robustness and Reliability, 10 times better than crystal VCTCXO and TCXO oscillators
    • 500 million hours MTBF
    • 50,000 g shock resistance
    • 70 g vibration resistance
  • Improve system robustness in all operating environments
  • Reduce field failures due to clock components and the repair cost
  • <1ps (max.) integrated RMS phase jitter (12 kHz to 20 MHz), 0.5ps typical
  • Meets SONET specifications
  • Excellent for telecom and wireless applications
  • Configurable drive strength using SoftEdge™ technology
  • Slower rise/fall time that reduces system EMI
  • Saves cost by driving multiple loads and eliminates external buffers
  • Three industry standard packages
  • 100% drop in replacement of quartz TCXO and VCTCXO
  • Ultra fast lead time (3-5 weeks production)
    • Any frequency
    • Any voltage
    • Any stability
    • Any pull range
    • Any drive strength
    • Any package
  • Reduce inventory overhead
  • Mitigate shortage risks


1. Contact SiTime for SoftEdge™ output waveform that reduces EMI, similar in functionality to the clipped sinewave.

1.8V LVCMOS IBIS iconSiT5001_1v8v
2.5V LVCMOS IBIS iconSiT5001_2v5v
2.8V LVCMOS IBIS iconSiT5001_2v8v
3.3V LVCMOS IBIS icon SiT5001_3v3v