由一片TLC5620构成两路模/数、两路数/模转换电路的设计

Design of Two Channels Analog-to-Digital Converting and Two Channels Digital-to-Analog Converting Circuit Based on a TLC5620

分析了 TI 公司的 4 路串行 8 位数/模转换器(DAC)TLC5620 的功能、特点、工作原理。提出了一种由单片 TLC5620 组成的两组模/数、数/模转换电路的设计,给出了该电路的硬件接线和软件编程,提供了一个新颖实用的模/数、数/模转换电路。该电路大大减少了对电路板的空间需求,同时系统的成本也降低了很多。

The functions,characteristics,the principle of the quadruple 8-bit voltage output digital-to-analog con- verters TLC5620,which is produced by TI company,are analyzed. The design of two channels analog-to-digital converting and two channels digital-to-analog converting circuit based on single TLC5620 is described,and its hardware interface and software,including a novel prac- tical circuit of ADC and DAC are given. This circuit reduces the requirement to area of PCB and the cost of system greatly.