25 lines
487 B
Markdown
25 lines
487 B
Markdown
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---
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title: DAC主要用途
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updated: 2022-01-11 00:20:21Z
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created: 2022-01-11 00:18:41Z
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---
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着重讨论基本定型的几款IC
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# 主要用途
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- **调谐滤波器**：+运放生成偏置电压给变容管
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- **捷变频**：生成预置电压
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- **温补、恒温晶振频率微调**：产生调谐电压，微调输出频率，保证频率精度
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- **VGA**
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- **模拟可调衰减器**
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# 稳定时间
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典型稳定时间5-10us，控制时间根据协议不同而不同，IIC最慢
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