自動駕駛汽車(ADAS)中的晶振應用:四大核心模塊選型解析
深入解析自動駕駛汽車監控係統、雷達測距、GPS定位、中央處理四大模塊的晶振選型要求,涵蓋貼片晶振、溫補晶振(TCXO)、差分晶振。国产精品JK蜜桃翘臀白丝AV科技提供全係列車規級晶振解決方案。
2026-09-02


| 參數分類 Parameter Categories | 具體參數項目 Detailed parameters | 技術指標 Technical Specifications | 測試條件/補充說明 Test Conditions |
| 絕緣阻抗(直流) Insulation Resistance (DC) | 常溫標準絕緣阻抗 Standard insulation resistance at room temperature | ≥1000MΩ | 500V DC,電極與基體、殼體之間 500V DC, between electrode and substrate/housing |
| 高溫高濕絕緣阻抗 Insulation resistance at high temperature and high humidity | ≥500MΩ | 40℃、95%RH環境,長期靜置 40℃, 95% RH environment, long-term static placement | |
| 電極導通阻抗 Electrode Conductive Resistance | 單電極導通阻抗 Single electrode conductive resistance | ≤5Ω | 鍍金電極層,常溫工況 Gold-plated electrode layer, room temperature condition |
| 同片電極阻抗差值 Resistance difference between electrodes on the same wafer | ≤1Ω | 保證兩極導電一致性 Ensures consistent conductivity of both poles | |
| 諧振等效串聯阻抗(R1) Series equivalent resistance at resonance (R1) | ≤60Ω | 擺片工作頻點,低損耗特性 At the working frequency point of the pendulum disc, low-loss characteristics | |
| 動態交流阻抗 Dynamic AC Impedance | 極板寄生靜態電容 Static parasitic capacitance of the pole plate | ≤3pF | 偏差範圍±0.2pF Tolerance range ±0.2 pF |
| 阻抗溫度穩定性 Impedance Temperature Stability | 阻抗頻率特性 Impedance-frequency characteristics | 特性平穩、無突變、無諧振峰 Stable characteristics, no abrupt changes, no resonance peaks | 整機帶寬0~800Hz範圍內 Within the overall bandwidth range of 0~800Hz |
| 阻抗溫度係數 Impedance temperature coefficient | ≤10ppm/℃ | -40℃~+85℃全溫域 Full temperature range: -40℃ ~ +85℃ | |
| 高低溫循環阻抗重複性 Impedance repeatability after high-low temperature cycling | ≤5ppm | 多次溫循後無不可逆偏移 No irreversible offset after multiple temperature cycles | |
*石英擺片作為壓電敏感與電容檢測核心元件,其阻抗特性直接影響位移檢測信噪比、閉環回路穩定性、零位噪聲及溫漂性能,是加速度計電氣匹配的關鍵參數,所有指標為常溫25℃、標準工作工況下額定值。