Overview
The LMK1D1204RGTR is a high-performance LVDS clock buffer from Texas Instruments, designed to distribute one of two selectable clock inputs to 4 pairs of differential LVDS clock outputs. This component is part of the LMK1D12x family, which is specifically engineered for driving 50-Ω transmission lines. It supports a wide range of input types, including LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL, and CML. The device operates within an industrial temperature range of –40°C to 105°C and is available in a 3-mm × 3-mm, 16-pin VQFN (RGT) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 1.71 to 3.465 | V |
| Output Frequency | Up to 2 GHz | |
| Additive Jitter | < 60 fs RMS (12 kHz to 20 MHz at 156.25 MHz) | |
| Phase Noise Floor | –164 dBc/Hz (typical) | |
| Propagation Delay | < 575 ps maximum | |
| Output Skew | 20 ps maximum | |
| Operating Temperature Range | –40°C to 105°C | |
| Package Type | 16-pin VQFN (RGT) | |
| Package Size | 3-mm × 3-mm |
Key Features
- High-performance LVDS clock buffer family with 2 inputs and 4 (2:4) or 8 (2:8) outputs.
- Universal inputs accept LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL, and CML inputs.
- LVDS reference voltage, VAC_REF, available for capacitive-coupled inputs.
- Fail-safe function and input hysteresis to prevent random oscillation of the outputs.
- Supports 1.8-V, 2.5-V, or 3.3-V supply environment.
- Low additive jitter and very low phase noise floor.
- Very low propagation delay and output skew.
Applications
- Telecommunications and networking
- Medical imaging
- Test and measurement
- Wireless infrastructure
- Pro audio, video, and signage
Q & A
- What is the primary function of the LMK1D1204RGTR?
The LMK1D1204RGTR is a high-performance LVDS clock buffer that distributes one of two selectable clock inputs to 4 pairs of differential LVDS clock outputs.
- What types of input signals can the LMK1D1204RGTR accept?
The device can accept LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL, and CML input signals.
- What is the maximum output frequency of the LMK1D1204RGTR?
The maximum output frequency is up to 2 GHz.
- What is the operating temperature range of the LMK1D1204RGTR?
The device operates within an industrial temperature range of –40°C to 105°C.
- What package type and size is the LMK1D1204RGTR available in?
The component is available in a 3-mm × 3-mm, 16-pin VQFN (RGT) package.
- What is the additive jitter of the LMK1D1204RGTR?
The additive jitter is less than 60 fs RMS in the 12 kHz to 20 MHz range at 156.25 MHz.
- What is the phase noise floor of the LMK1D1204RGTR?
The phase noise floor is typically –164 dBc/Hz.
- What is the propagation delay of the LMK1D1204RGTR?
The propagation delay is less than 575 ps maximum.
- What is the output skew of the LMK1D1204RGTR?
The output skew is 20 ps maximum.
- In what applications is the LMK1D1204RGTR commonly used?
The device is commonly used in telecommunications and networking, medical imaging, test and measurement, wireless infrastructure, and pro audio, video, and signage.
