Overview
The Texas Instruments LMK04808BISQE/NOPB is a high-performance clock conditioner from the LMK0480x family. It is designed to provide superior clock jitter cleaning, generation, and distribution, making it ideal for next-generation system requirements. This device features a dual loop PLLatinum™ PLL architecture, which includes two high-performance phase-locked loops (PLL), a low-noise crystal oscillator circuit, and a high-performance voltage-controlled oscillator (VCO). The LMK04808BISQE/NOPB is particularly noted for its ultra-low RMS jitter performance and advanced features such as holdover mode, automatic and manual triggering/recovery, and integrated low-noise VCO.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 64-Pin WQFN (NKD) | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage | 3.15 to 3.45 | V |
| RMS Jitter (12 kHz to 20 MHz) | 111 fs | - |
| RMS Jitter (100 Hz to 20 MHz) | 123 fs | - |
| Phase Detector Rate | Up to 155 MHz | - |
| Clock Rates | Up to 1536 MHz | - |
| Output Types | LVPECL, LVDS, LVCMOS | - |
| Number of Programmable Outputs | Up to 26 Single Ended, 14 Differential | - |
| VCXO/Crystal Buffered Outputs | Up to 6 | - |
Key Features
- Ultra-Low RMS Jitter Performance: 111 fs RMS Jitter (12 kHz to 20 MHz) and 123 fs RMS Jitter (100 Hz to 20 MHz).
- Dual Loop PLLatinum™ PLL Architecture: Includes two high-performance PLLs and a low-noise crystal oscillator circuit.
- Integrated Low-Noise Crystal Oscillator and VCO: Provides superior close-in and far-out phase noise cleaning.
- Holdover Mode: Automatic or manual triggering/recovery when input clocks are lost.
- Automatic and Manual Switch-Over Modes: For redundant input clocks with LOS (Loss of Signal) detection.
- Programmable Outputs: Up to 26 single-ended and 14 differential outputs, with 50% duty cycle and divides from 1 to 1045.
- Digital Delay: Fixed or dynamically adjustable, with 25 ps step analog delay control.
- 0-Delay Mode and Multi-Mode Operation: Supports dual PLL, single PLL, and clock distribution modes.
Applications
- Data Converter Clocking: Ideal for high-precision data conversion applications.
- Wireless Infrastructure: Used in wireless base stations and other infrastructure equipment.
- Networking, SONET/SDH, DSLAM: Suitable for high-speed networking and telecommunications systems.
- Medical, Video, Military, Aerospace: Applies to various critical and high-reliability sectors.
- Test and Measurement: Used in precision test and measurement equipment.
Q & A
- What is the primary function of the LMK04808BISQE/NOPB? The primary function is to provide high-performance clock jitter cleaning, generation, and distribution.
- What is the RMS jitter performance of the LMK04808BISQE/NOPB? It offers 111 fs RMS Jitter (12 kHz to 20 MHz) and 123 fs RMS Jitter (100 Hz to 20 MHz).
- What types of input and output signals does the LMK04808BISQE/NOPB support? It supports LVCMOS, LVDS, and LVPECL inputs and outputs.
- What is the operating temperature range of the LMK04808BISQE/NOPB? The operating temperature range is -40 to 85°C.
- How many programmable outputs does the LMK04808BISQE/NOPB have? It has up to 26 single-ended and 14 differential programmable outputs.
- What is the maximum clock rate supported by the LMK04808BISQE/NOPB? The maximum clock rate is up to 1536 MHz.
- Does the LMK04808BISQE/NOPB support holdover mode? Yes, it supports holdover mode with automatic or manual triggering/recovery when input clocks are lost.
- What package type is the LMK04808BISQE/NOPB available in? It is available in a 64-Pin WQFN (NKD) package.
- What is the supply voltage range for the LMK04808BISQE/NOPB? The supply voltage range is 3.15 to 3.45 V.
- In which sectors is the LMK04808BISQE/NOPB commonly used? It is commonly used in data converter clocking, wireless infrastructure, networking, medical, video, military, aerospace, and test and measurement applications).
