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词汇 Cascode amplifier
分类 英语词汇 英语翻译词典
释义

Cascode amplifier

英语百科

Cascode

(重定向自Cascode amplifier)
High-voltage stack
Figure 2: BJT Cascode using ideal current sources for DC bias and large coupling capacitors to ground and to the AC signal source; capacitors are short circuits for AC
Figure 3: MOSFET Cascode using ideal voltage sources for DC gate bias and a DC current source as active load. Since each MOSFET transistor has gate and source connected, this configuration is valid only for discrete 3-terminal components.

The cascode is a two-stage amplifier composed of a transconductance amplifier followed by a current buffer.

Compared to a single amplifier stage, this combination may have one or more of the following characteristics: higher input-output isolation, higher input impedance, high output impedance, higher gain or higher bandwidth.

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