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SiT3521 Datasheet I2c/spi Programmable Oscillator

Manufacturer: SiTime

Overview: SiT3521 1 to 340 MHz Elite Platform I2C/SPI Programmable Oscillator.

Datasheet Details

Part number SiT3521
Manufacturer SiTime
File Size 1.39 MB
Description I2C/SPI Programmable Oscillator
Datasheet SiT3521-SiTime.pdf

General Description

The SiT3521 is an ultra-low jitter, user programmable oscillator which offers the system designer great flexibility and functionality.

The device supports two in-system programming options after powering up at a default, factory programmed startup frequency: ◼ Any-frequency mode where the clock output can be re-programmed to any frequency between 1 MHz and 340 MHz in 1 Hz steps ◼ Digitally controlled oscillator (DCO) mode where the clock output can be steered or pulled by up to ±3200 ppm with 5 to 94 ppt (parts per trillion) resolution.

The device’s default start-up frequency is specified in the ordering code.

Key Features

  • Programmable frequencies (factory or via I2C/SPI) from 1 MHz to 340 MHz.
  • Digital frequency pulling (DCO) via I2C/SPI.
  • Output frequency pulling with perfect pull linearity.
  • 13 programmable pull range options to ±3200 ppm.
  • Frequency pull resolution as low as 5 ppt (0.005 ppb).
  • 0.21 ps typical integrated phase jitter (12 kHz to 20 MHz).
  • Integrated LDO for on-chip power supply noise filtering.
  • 0.02 ps/mV PSNR.
  • -40°C to 105°C operating temperature.
  • L.

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SiT3521 Distributor