SDAA607 November   2026 LMX2581

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware Design
  6. 3Loop Filter Components Selection
    1. 3.1 Design Example
    2. 3.2 Simulation in TI PLLatinum Sim
    3. 3.3 Test Verification
      1. 3.3.1 Setup
      2. 3.3.2 Test Results
  7. 4References

Abstract

LMX2581 is a wideband frequency synthesizer, which can generate clocking signal up to 3.76GHz. In today's data center system, high-performance central processing units (CPU) and graphics processing units (GPU) running at several Gigahertz is common. At the same time, the jitter of the GHz clocking signal is critical for the stable operation of the CPU and GPU and maximize efficiency. When designing with clock generators like LMX2581 for data center applications, multiple careful considerations are needed to achieve the optimized jitter performance. This paper demonstrates the relationships between the significant factors through example schematic designs and board test results.