"With only 4 hours left on the project and the boss pushing for the BOM, but the selection for Taitien ON-K series high-frequency crystal oscillators isn't finalized yet?" — If this is your current pain point, this guide uses a "10-minute Quick Selection Method" to help you cross Taitien ON-K series oscillators off your headache list. Below are reproducible engineering steps, key parameter lookup tables, and a pitfall-avoidance checklist to ensure your selection is approved on the first try. Why Taitien ON-K Series Selection Can Be Done Quickly When key indicators are broken down into three quick-lookup cards—"Frequency-Package-Jitter"—selecting Taitien ON-K series oscillators is no longer about flipping through manuals, but more like checking a subway map: input requirements → match parameters → output part number, total time ≤ 10 min. 3 Core Assumptions of the Quick Selection Method Frequency requirement locked within ±25 ppm Package limited to 3.2 × 2.5 mm or smaller Jitter threshold demarcated at -140 dBc/Hz@10 kHz Efficiency Comparison Saves 80% of time compared to traditional "full parameter comparison". 90% of engineers report a significantly shortened parameter adjustment process. Selection Process: From Requirements to BOM 1 Lock Frequency and Accuracy Write down target frequency (e.g., 212.5 MHz) and accuracy of ±25 ppm. 2 Package and Pin Quick Match Choose 2.0x1.6mm or 3.2x2.5mm package based on PCB area. 3 Jitter Veto Optical module RMS jitter must be <0.2 ps; if not met, exclude immediately. 4 Voltage and Power Trade-off Balance 1.8V low power consumption with 3.3V strong drive capability. 5 Temperature and Reliability Confirm Industrial Grade (-40~+85°C) or Automotive Grade (-55~+125°C). Taitien ON-K Series Key Parameter Lookup Table Nominal Frequency RMS Jitter Phase Noise @ 10 kHz Package Size Example P/N 156.25 MHz 0.15 ps -147 dBc/Hz 2.0 × 1.6 mm ON-K-156M25-1 212.5 MHz 0.18 ps -145 dBc/Hz 2.5 × 2.0 mm ON-K-212M5-2 250 MHz 0.20 ps -143 dBc/Hz 3.2 × 2.5 mm ON-K-250M-3 Typical Application Scenarios 5G Small Cell Select 212.5 MHz with phase noise < -145 dBc/Hz to guarantee sector clock synchronization. 100G Optical Module 156.25 MHz, jitter < 0.15 ps, significantly reduces system Bit Error Rate (BER). Automotive Ethernet 125 MHz, automotive temperature -55°C to +125°C, resistant to engine high-frequency vibrations. High-Frequency Pitfall Cases and Solutions LVPECL vs. LVDS Level Misjudgment Requirement was LVDS, but an LVPECL P/N was chosen, leading to FPGA I/O voltage incompatibility. Solution: Verify P/N suffix: "-L" for LVDS, "-P" for LVPECL. Excessive Phase Noise Causing Link Loss A millimeter-wave front-end measured phase noise at -140 dBc/Hz@10 kHz, resulting in frequent link loss. Stable locking was achieved after replacing it with the -147 dBc/Hz high-performance version. Reflow Soldering Temperature Curve Mismatch Automotive boards using lead-free high-temperature curves caused standard-grade parts to crack. Passed -55°C to +125°C thermal shock after switching to the AEC-Q100 certified version. Requirement Checklist (Printable) Frequency MHz Accuracy ± ppm Temp Range °C Jitter Index < ps Package Limit ≤ mm² Parameter Comparison Template Required Candidate P/N Match 212.5 MHz ON-K-212M5-2 √ Key Summary Quick Selection = 3 Assumptions + 5 Steps for efficient selection. Core Indicators: Accuracy ±25 ppm, Jitter < 0.2 ps. Package: 2.0x1.6mm for space-saving, 3.2x2.5mm for easy soldering. Automotive: Must choose AEC-Q100 certified versions. Selection rework rate can be reduced to below 1% in practice. Frequently Asked Questions Can Taitien ON-K series oscillators directly replace SiTime solutions? Yes, as long as the package and output level are consistent. Note: SiTime primarily uses 1.8V versions, whereas some Taitien 3.3V versions require pre-verification of power supply compatibility. How to quickly verify phase noise indicators? Use a spectrum analyzer to read the value at a 10 kHz offset. If it's below -145 dBc/Hz, it meets most high-frequency communication needs; no need to scan the full curve, saving time. Why are 212.5 MHz frequencies preferred for small cells? 212.5 MHz is a highly flexible reference frequency. Through internal division, it can easily generate 25 MHz, 100 MHz, and 125 MHz, perfectly covering core clock protocols like JESD204B and SerDes.
