obsidian-notes/DAC/DAC主要用途.md
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---
title: DAC主要用途
updated: 2022-01-11 00:20:21Z
created: 2022-01-11 00:18:41Z
---
着重讨论基本定型的几款IC
# 主要用途
- **调谐滤波器**+运放生成偏置电压给变容管
- **捷变频**:生成预置电压
- **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
- **VGA**
- **模拟可调衰减器**
# 稳定时间
典型稳定时间5-10us控制时间根据协议不同而不同IIC最慢