LMK1D2102RGTR

Clock Buffers, Drivers Overview

The LMK1D2102RGTR is a low additive jitter LVDS clock buffer manufactured by Texas Instruments. It features dual 1:2 differential buffering, distributing two inputs (IN0, IN1) to four LVDS outputs (OUT0–OUT3). The device supports input frequencies up to 2 GHz and operates on a supply voltage of 1.71 V to 3.465 V. Key electrical parameters include a maximum propagation delay of 575 ps, output skew of 20 ps, and random additive jitter below 60 fs RMS at 156.25 MHz. It accepts universal input levels including LVDS, LVPECL, HCSL, CML, and LVCMOS. The component is housed in a 3 mm × 3 mm 16-pin VQFN package.

Clock Buffers, Drivers Feature Summary

• Dual 1:2 differential LVDS buffer with universal input compatibility (LVDS, LVPECL, HCSL, CML, LVCMOS)
• Low additive jitter (< 60 fs RMS at 156.25 MHz) and very low phase noise floor (-164 dBc/Hz typical)
• Very low propagation delay (< 575 ps max) and output skew (20 ps max)
• Fail-safe input operation with input hysteresis to prevent random oscillation

Clock Buffers, Drivers Applications

• Telecommunications and networking
• Medical imaging
• Test and measurement
• Wireless infrastructure
• Pro audio, video and signage

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'RGTR' corresponds to the specific reel quantity and tape configuration required for the assembly line. Confirm that the 16-pin VQFN package dimensions match the PCB footprint design. Ensure the thermal pad connection strategy aligns with the board's ground plane requirements for heat dissipation.

Clock Buffers, Drivers Selection Notes

Select this component when a dual-bank buffer with only two outputs per bank is sufficient, as opposed to the LMK1D2104 which offers four outputs per bank. Verify that the system requires the specific 3mm x 3mm package size. Ensure the application can accommodate the universal input voltage ranges and that the 50Ω transmission line driving capability meets the trace impedance requirements.

Clock Buffers, Drivers Part Context

The LMK1D2102 is part of the LMK1D210x family of low additive jitter LVDS buffers from Texas Instruments. This family includes variants like the LMK1D2104 (dual 1:4), LMK1D2106M (dual 1:6), and LMK1D2108M (dual 1:8). All devices share similar core performance characteristics regarding jitter and input compatibility but differ in output count and package size.

Clock Buffers, Drivers Replacement Considerations

LMK1D2102RGT is the non-tape variant of the same device. LMK1D2104RGTR is a higher-output version in the same package. LMK1D2106M and LMK1D2108M are larger packages with more outputs.