SiTime, Silicon MEMS Oscillators and Clock Generators

SSD (Solid State Drive)

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The benefit of having SSDs is that there are no mechanical spinning parts.  Because they are solid state, SSDs are inherently fast, reliable, and shock resistant.  SiTime helps to make SSDs even more reliable by offering all-silicon MEMS oscillators, which are 10 times more robust and reliable than quartz crystal oscillators.

SiTime offers

  • The best reliability
  • Most cost effective high frequency oscillator
  • Ultra fast lead time

 

SiTime offers a complete portfolio of timing solutions that are targeted at SSD applications. Our MEMS oscillators provide clocks to every interface protocol used in SSD devices such as SATA, SAS, Infiniband, and PCIe. Here are some feature of SiTime's SSD solutions:

  • 10 times more reliable than crystal oscillator
  • Best Robustness (Up to 50,000 G shock and 70 G vibration)
  • 2.5x2.0 mm package at the same price as bigger packages
  • ±25 ppm for price of ±50 ppm
  • 150 MHz LVCMOS oscillator for same price as 75 MHz
  • Ultra fast lead time (2-3 weeks)

SiTime's MEMS Oscillator Solutions for SSD

Applications SiTime Solutions Key Features
SATA and SAS
SiT9102AC-232N33E150.00000 150MHz (LVDS), ±25PPM, 3.3 V, 5.0x3.2mm package, Output Enable control
SiT8004AC-12-33E-150.00000 150MHz (SE), ±25PPM, 3.3 V, 2.5x2.0mm package, Output Enable control
SiT8003AC-12-33E-75.00000 75MHz (SE), ±25PPM, 3.3 V, 2.5x2.0mm package, Output Enable control
SiT8003AC-12-33E-62.50000 62.5MHz (SE), ±25PPM, 3.3 V, 2.5x2.0mm package, Output Enable control
SiT8003AC-12-33E-50.00000 50MHz (SE), ±25PPM, 3.3 V, 2.5x2.0mm package, Output Enable control
SiT8003AC-12-33E-37.50000 37.5MHz (SE), ±25PPM, 3.3 V, 2.5x2.0mm package, Output Enable control
SiT8003AC-12-33E-31.25000 31.25MHz (SE), ±25PPM, 3.3 V, 2.5x2.0mm package, Output Enable control
PCIe and Infiniband
SiT9102AC-232N33E200.00000
200MHz (LVDS), ±25PPM, 3.3 V, 5.0x3.2mm package, Output Enable control
SiT9102AC-232N33E100.00000 100MHz (LVDS), ±25PPM, 3.3 V, 5.0x3.2mm package, Output Enable control
SiT8003AC-12-33E-100.00000 100MHz (SE), ±25PPM, 3.3 V, 2.5x2.0mm package, Output Enable control

 

SiTime products also offer the following options for customization

  • Any frequency between 1 and 200 MHz with 5 decimal places of accuracy
  • LVDS, LVPECL, HCSL, and CML differential signaling
  • Operation at 1.8V, 2.5V, 2.8V or 3.3V, configurable.
  • 2520, 3225, 5032 and 7050 packages
  • Spread spectrum for EMI reduction for SATA, SAS and PCIe
    • SiT9003 Single-Ended (SE) for low power applications
    • SiT9001 Single-Ended (SE) for any frequency above 110 MHz
    • SiT9002 for differential clocks

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SATA or SAS
Clock frequency (MHz)
PCIe
Frequency (MHz)
Infiniband
Frequency (MHz)
31.25
37.5
50
62.5
75
150
100
200
100
200
SiT8003 (SE)
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SiT8004 (SE)
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SiT9102 (Differential)
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SiT9001/9003 (SE) Spread Spectrum
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SiT9002 (Differential)
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  • SiTime offers standard as well as Spread Spectrum oscillators for EMI reduction
  • All SiTime's oscillators are drop-in replacement for Crystal oscillators

 

Design Considerations

MEMS Oscillator Features

  • Smaller and thinner design
    More components in less space
  • 2.5x2.0mm package at any frequency, stability and voltage
    Thinnest package at <0.25 µm
  • Best reliability
  • 2 FIT = 500,000,000 hours MTBF
  • Resistance to shock and vibration
  • 50,000 G shock resistance
    70 G vibration resistance
  • Eliminate EMI and interference issues between different subsystems
  • Spread spectrum technique
  • Shorter lead time to minimize inventory and meet demand spikes
  • 2-4 weeks lead time, best in the industry as the result of programmable MEMS platforms