Texas Instruments - Fully-programmable ultra low-jitter oscillator delivers LVPECL / LVDS / HCSL (LMK61E2)

Texas Instruments' LMK61E2 is an ultra-low-jitter PLLatinum programmable oscillator with a fractional-N frequency synthesizer and an integrated VCO to generate commonly used reference clocks. The output can be configured as LVPECL or LVDS or HCSL. The device has a self-starting function of an on-chip EEPROM that is factory programmed to generate 156.25MHz LVPECL output. Device registers and EEPROM settings can be fully programmed in the system via the I2C serial interface. Internal power regulation provides excellent power ripple rejection (PSRR), reducing the cost and complexity of power transmission networks. The device operates from a single 3.3V ± 5% power supply. The device provides fine and coarse frequency margin options through the I2C serial interface to support system design verification tests (DVT), such as standard compliance and system timing margin tests.