CSU1200在高精度手掌秤中的应用

手掌秤体积小、秤量小、低电压供电，因此对其内部电路设计提出了较苛刻的要求，通常只能采用一种称为片上系统（SOC）芯片，将应用系统中绝大多数功能集成在一片芯片中的集成电路，CSU1200就是一种集成了增益放大器（PGA）、∑-△模数转换器（ADC）、单片机（MCU）、LCD驱动器、基准电压源、低压检测电路、按键检测电路、蜂呜器电路等片上系统，本文简要介绍了CSU1200的特点并给出了一个实际的应用了CSU1200的手掌秤电路。

CSU1200:Application in high-accuracy jewelry scale

Jewelry scale is small size, small capacity, low power supply, so it requires much stricter internal electronic circuit design. Commonly, it use SOC （System on chip） to integrate most application system functions in one IC. CSU1200 is just this SOC that includes PGA, ∑-△ ADC, MCU, LCD driver, reference power supply, low-power detector, keyboard detector, and buzzer. This article briefly introduces features of CSU1200 and lists out a useful application electronic circuit of jewelry scale with CSU1200.