Overview
The LMK1D2102RGTR is a high-performance clock buffer designed by Texas Instruments. It is part of the LMK1D210x family, which is specifically engineered for driving 50-Ω transmission lines and distributing clock signals with minimal jitter. This device supports multiple input types, including LVDS, LVPECL, HCSL, LVCMOS, and CML, making it versatile for various digital systems. The LMK1D2102RGTR operates over a wide temperature range from –40°C to 105°C and is packaged in a 16-pin VQFN (3x3 mm) for efficient thermal management and board-level integration.
Key Specifications
| Parameter | Value |
|---|---|
| Input Types | LVDS, LVPECL, HCSL, LVCMOS, CML |
| Output Type | LVDS |
| Input:Output Ratio | 1:2, 1:4 |
| Maximum Frequency | Up to 2 GHz |
| Voltage Supply Range | 1.71 V to 3.465 V |
| Operating Temperature Range | –40°C to 105°C |
| Package Type | 16-VFQFN Exposed Pad (3x3 mm) |
| Propagation Delay | < 575 ps max |
| Output Skew | 20 ps max |
| Additive Jitter | < 60 fs RMS in 12-kHz to 20-MHz @ 156.25 MHz |
| Phase Noise Floor | -164 dBc/Hz (typical) |
Key Features
- High-performance LVDS clock buffer family with frequencies up to 2 GHz.
- Dual 1:2 and 1:4 differential buffer configurations.
- Fail-safe input operation and input hysteresis to prevent random oscillation.
- Low additive jitter and very low phase noise floor.
- Universal inputs accepting various signal levels.
- LVDS reference voltage (VAC_REF) available for capacitive coupled inputs.
- Control pin (EN) for enabling or disabling output banks.
- Surface mount technology for board-level integration.
Applications
- Communication systems.
- Data processing units.
- Advanced computing platforms.
- High-speed digital signal processing.
Q & A
- What is the maximum frequency supported by the LMK1D2102RGTR? The LMK1D2102RGTR supports frequencies up to 2 GHz.
- What are the supported input types for the LMK1D2102RGTR? The device supports LVDS, LVPECL, HCSL, LVCMOS, and CML input types.
- What is the operating temperature range of the LMK1D2102RGTR? The device operates from –40°C to 105°C.
- What is the package type of the LMK1D2102RGTR? It is packaged in a 16-pin VQFN (3x3 mm) with an exposed pad.
- How does the control pin (EN) function in the LMK1D2102RGTR? The control pin (EN) allows for enabling or disabling the output banks.
- What is the additive jitter of the LMK1D2102RGTR? The additive jitter is less than 60 fs RMS in the 12-kHz to 20-MHz frequency range at 156.25 MHz.
- What is the phase noise floor of the LMK1D2102RGTR? The phase noise floor is typically -164 dBc/Hz.
- Can the LMK1D2102RGTR operate in single-ended mode? Yes, but an appropriate bias voltage must be applied to the unused negative input pin.
- What are the key advantages of using the LMK1D2102RGTR? It offers high-frequency support, multiple input and power supply options, and reliable operation across a wide temperature range.
- Is the LMK1D2102RGTR currently in production? Yes, the product is active and not indicated as nearing discontinuation.
