摘要： DS1802音频电位器包含两个数字控制电位器和功能产生每递增1分贝变化对数锥度。本应用笔记介绍使用它在一个按钮控制音频前置放大电路。Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS AUDIO CIRCUITS DIGITAL POTENTIOMETERS Keywords: digital potentiometers, preamplifier, preamp, digital pot, xicor May 03, 2002 APPLICATION NOTE 161 Using a DS1802 Push-Button Digital Potentiometer to Create an Audio Preamp with Attenuator Abstract: The DS1802 audio potentiometer contains two digitally controlled potentiometers and features a logarithmic taper that produces a 1dB change per increment. This application note describes using it in a push- button controlled audio preamplifier circuit. Introduction to the DS1802 Dual Logarithmic Audio Potentiometer The DS1802 Audio Potentiometer contains two digitally-controlled potentiometers and features a logarithmic taper that produces a 1dB chan……