1 to 150 MHz, AEC-Q100 Spread-spectrum Oscillator

The SiT9025 is an industry’s first AEC-Q100-compliant, automotive-grade spread spectrum oscillator. This device solves EMI problems by offering two techniques for emissions compliance: spread spectrum clocking and rise/fall time adjustment of the clock signal. What’s more, the SiT9025 comes in three industry-standard packages and is supported by SiTime’s Time Machine II programmer that allows engineers to replace quartz products without any design changes and instantly program spread modulation and/or drive strength to quickly reduce emissions levels. This combination enables customers to accelerate time to revenue by ensuring emissions compliance with minimum engineering effort.

SiT9025 package
Oscillator Type SSXO-SE
Frequency 1 to 150 MHz
Frequency Stability (ppm) ±20, ±25, ±50
Operating Temperature Range (°C) -40 to 85 (Grade 3), -40 to 105 (Grade 2), -40 to 125 (Grade 1), -55 to 125 (Ext. Cold Grade 1)
Output type LVCMOS
Package Type (mm²) 2.0x1.6 mm, 2.5x2.0 mm, 3.2x2.5 mm
Features AEC-Q100, EMI Reduction
Voltage Supply (V) 1.8, 2.5 to 3.3
Spread Profile Triangular, Hershey Kiss, Random
Spread Percentage (%) Center: ±0.125 to ±2.000, Down: -0.25 to -4.00
FlexEdgeTM Rise/Fall Time Yes
Availability Sampling

Industry's first AEC-Q100- compliant, resonator-integrated spread spectrum oscillator

  • Up to 30 dB electromagnetic interference (EMI) reduction
  • Up to 134 times better electromagnetic susceptibility (EMS) than an external resonator plus an SSIC solution
  • Solves EMI problem and improves reliability in noisy environments

Flexible EMI reduction options

  • Wide spread range: center spread up to ±2.0%, down spread down to -4.0%
  • Configurable rise/fall time: 8 options
  • Configurable spread profile: triangular, Hershey kiss, or random

3 industry-standard packages

  • 100% drop-in replacement of quartz XO
  • Enables EMI reduction without board redesign, metal housing, or other expensive EMI reduction method

World's best cycle-to-cycle jitter: 8.5 ps

  • Minimize impact to system timing budget

70 g vibration and 50,000 g shock

  • Best robustness and reliability in harsh conditions

Extensive programmability

  • Any frequency from 1 to 150 MHz with 6 decimal-place accuracy
  • Supply voltage of 1.8 V; 2.5 to 3.3 V
  • Frequency stability from ±20 ppm to ±50 ppm

Ultra-fast lead times (4 to 6 weeks)

  • Reduce inventory overhead
  • Mitigate shortage risks
  • Automotive ADAS cameras
  • High-speed serial link
  • ADAS ECU

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