SiT3542 Datasheet

The SiT3542 is a ruggedized, ultra-low jitter, user-programmable oscillator with a maximum acceleration sensitivity of 0.1 ppb/g. SiT3542, designed for high-reliability applications, and conforms to MIL-PRF-55310 and MIL-STD-83 specifications to deliver functionality in the most demanding environments. 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 340 MHz and 725 MHz in 1 Hz steps, and 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. A user specifies the device’s default start-up frequency in the ordering code. User programming of the device is achieved via I2C or SPI. Up to 16 I2C addresses can be specified by the user either as a factory programmable option or via hardware pins, enabling the device to share the I2C with other I2C devices.

 

 
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