Overview
The LMK1D1208RHDR is a high-performance clock buffer from Texas Instruments, designed to distribute clock signals with minimal skew and jitter. This device is part of the LMK1D12x family, which includes 2:4 and 2:8 clock buffer configurations. The LMK1D1208RHDR specifically offers 8 pairs of differential LVDS clock outputs, making it ideal for applications requiring precise clock distribution.
Key Specifications
| Specification | Value |
|---|---|
| Package | 28-pin VQFN (RHD) |
| Operating Temperature Range | -40°C to 105°C |
| Supply Voltage | 1.71 V to 3.465 V |
| Output Frequency | Up to 2 GHz |
| Input Types | LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL, CML |
| Output Type | Differential LVDS |
| 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 |
Key Features
- High-performance LVDS clock buffer with 2 inputs and 8 outputs.
- Supports various input types: LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL, and CML.
- Output frequency up to 2 GHz.
- Low additive jitter and very low phase noise floor.
- Very low propagation delay and output skew.
- Industrial temperature range: -40°C to 105°C.
- LVDS reference voltage available for capacitive-coupled inputs.
- Fail-safe function and input hysteresis to prevent random oscillation.
Applications
The LMK1D1208RHDR is suitable for a variety of applications that require precise clock distribution, including:
- High-speed data transmission systems.
- Telecommunication equipment.
- Networking devices.
- High-performance computing systems.
- Medical imaging and diagnostic equipment.
Q & A
- What is the maximum output frequency of the LMK1D1208RHDR?
The maximum output frequency is up to 2 GHz. - What types of inputs does the LMK1D1208RHDR support?
The device supports LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL, and CML inputs. - What is the operating temperature range of the LMK1D1208RHDR?
The operating temperature range is -40°C to 105°C. - What is the package type and pin count of the LMK1D1208RHDR?
The package type is 28-pin VQFN (RHD). - What is the additive jitter of the LMK1D1208RHDR?
The additive jitter is less than 60 fs RMS (12 kHz to 20 MHz at 156.25 MHz). - Does the LMK1D1208RHDR have a fail-safe function?
Yes, the device includes a fail-safe function and input hysteresis to prevent random oscillation. - What is the phase noise floor of the LMK1D1208RHDR?
The phase noise floor is -164 dBc/Hz (typical). - What is the propagation delay of the LMK1D1208RHDR?
The propagation delay is less than 575 ps maximum. - What is the output skew of the LMK1D1208RHDR?
The output skew is 20 ps maximum. - Is the LMK1D1208RHDR suitable for high-speed data transmission systems?
Yes, it is suitable for high-speed data transmission systems due to its high-performance characteristics.
