Fully-programmable ultra low-jitter oscillator delivers LVPECL / LVDS / HCSL

This post is sponsored by Texas Instruments. The LMK61E2 from Texas Instruments (TI) is an ultra low-jitter PLLatinum programmable oscillator with a fractional-N frequency synthesizer with integrated VCO that generates commonly used reference clocks. The outputs can be configured as LVPECL or LVDS or HCSL. The device features self start-up from on-chip EEPROM that is factory programmed to generate 156.25MHz LVPECL output. The device registers and EEPROM settings are fully programmable in-system via I2C serial interface. Internal power conditioning provide excellent power supply ripple rejection (PSRR), reducing the cost and complexity of the power delivery network. The device operates from a single 3.3V ± 5% supply. The device provides fine and coarse frequency margining options via I2C serial interface to support system design verification tests (DVT), such as standard compliance and system timing margin testing.