LMK61E0M-SIAR

Overview

The LMK61E0M-SIAR is an ultra-low jitter programmable oscillator from Texas Instruments, designed for high-performance clocking applications. It features a standard LVCMOS output and operates within a frequency range of 50 MHz to 200 MHz. The device supports a supply voltage of 3.135 V to 3.465 V and includes an enable/disable function. It utilizes an internal EEPROM for configuration and is housed in an 8-SMD module package. Typical RMS jitter is specified at 500 fs for output frequencies greater than 50 MHz.

Feature Summary

• Ultra-low noise performance with typical 500-fs RMS jitter for frequencies above 50 MHz
• Programmable frequency generation capability supported by internal EEPROM storage
• Standard LVCMOS output interface compatible with 3.3-V logic levels
• Integrated enable and disable functionality for power management control

Applications

• PCIe Gen 1 to Gen 6 reference-less clock generation
• High-speed serial link reference clocks
• Data converter sampling clocks
• FPGA and ASIC clock distribution systems

Procurement Notes

Verify the specific frequency configuration required for your application against the internal EEPROM programming capabilities. Confirm that the 8-SMD package dimensions align with your PCB layout constraints. Ensure the supply voltage range of 3.135 V to 3.465 V matches your system power rails. Check for any specific ordering suffixes that might indicate different factory presets or packaging options. Validate compatibility with your target PCIe or serial interface standards before finalizing the component selection.

Selection Notes

Select this component when ultra-low jitter is critical for signal integrity in high-speed digital interfaces. The programmable nature allows for flexible frequency customization without changing hardware. Consider the internal EEPROM feature if field reconfigurability or fixed factory presets are needed. The LVCMOS output simplifies interfacing with standard logic devices compared to differential outputs. Evaluate the thermal and electrical requirements of the 8-SMD package for your specific board design.

Part Context

This part belongs to the LMK61E0M series of ultra-low jitter programmable oscillators. It is distinct from fixed-frequency models like the LMK61E0-155M52SIAR, offering flexibility through programmability. The SIAR suffix typically denotes a tape-and-reel packaging option suitable for automated assembly processes. It serves as a versatile clock source for modern high-bandwidth communication protocols.

Replacement Considerations

LMK61E0M-SIAT is available as a cut-tape alternative from the same manufacturer.