IC693MAR590

IC693MAR590

鑒相器是一個(gè)相位比較裝置，用來檢測(cè)輸入信號(hào)的相位和反饋信號(hào)的相位之間的相位差，并輸出一個(gè)對(duì)應(yīng)兩信號(hào)相差的誤差電壓Ud(t)，完成相位差到電壓的變換。

根據(jù)不同用途，鑒相器的要求主要有：鑒相特性形狀；鑒相特性斜率和鑒相靈敏度；高工作頻率；對(duì)輸入信號(hào)的泄漏；鑒相器的門限；鑒相能力。

鑒相器的具體電路很多，利用集成電路技術(shù)，單片集成鑒相器主要有：

1.相乘鑒相器：包括雙平衡差分模擬相乘器和電流比率模擬相乘器等

2.門鑒相器：包括或門、異或門、與非門、或非門和異或門，D觸發(fā)器、RS觸發(fā)器等

3.數(shù)字式鑒相器：包括觸發(fā)器型鑒相器和電壓型、電流型數(shù)字式鑒相器等

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