LMK61E07-SIAR

Overview

The LMK61E07-SIAR is a multi-signal format, ultra-low jitter programmable oscillator from Texas Instruments. It features an internal EEPROM for self-starting configurations and supports LVPECL, LVDS, or HCSL outputs. The device operates within a -40°C to +85°C temperature range in a 6-pin QFM (SIA) package. Key electrical parameters include a typical RMS jitter of 90 fs at frequencies above 100 MHz and a power supply rejection ratio (PSRR) of -70 dBc. It utilizes an integrated VCO and PLLatinum™ synthesizer, with full programming capability via an I2C serial interface.

Feature Summary

• Ultra-low jitter performance with integrated VCO and PLLatinum frequency synthesizer
• Internal EEPROM enables self-starting operation without external configuration memory
• Multi-signal output compatibility supporting LVPECL, LVDS, and HCSL formats
• Robust power supply noise rejection through internal power regulation

Applications

• High-speed data converter clock generation
• Telecommunications base station synchronization
• Test and measurement equipment timing references
• Networking infrastructure clock distribution

Procurement Notes

Verify the specific suffix 'SIAR' corresponds to the required tape-and-reel packaging and operating temperature grade. Confirm that the QFM package dimensions align with your PCB footprint requirements. Ensure the I2C address settings are compatible with your system controller. Validate that the output signal levels meet the input specifications of downstream components.

Selection Notes

Select this component when ultra-low phase noise is critical for system performance. The internal EEPROM simplifies board design by removing the need for external configuration chips. Consider the multi-signal output flexibility if different voltage standards are required across the system. The robust PSRR makes it suitable for noisy power environments common in industrial applications.

Part Context

This part belongs to Texas Instruments' LMK61 series of programmable oscillators. It shares architectural similarities with other members like the LMK61E2 but offers specific pinout and configuration options tailored for compact designs. The series is designed for applications requiring precise clock generation with minimal added jitter.

Replacement Considerations

Direct substitutes may include other LMK61 series variants such as LMK61E2, provided they support the same output formats and package constraints. Verify functional equivalence regarding jitter performance and I2C compatibility before substitution.