0.6μm CMOS集成传感器电路兼容的RS232串行通信发送接口芯片研究  

RS232 Serial Communication Transmitter Interface IC Compatible with 0.6 μm CMOS Sensor IC

作　　者：孙颖[1] 吴献[1] 朱大中[1] 

机构地区：[1]浙江大学信息与电子工程学系,杭州310027

出　　处：《传感技术学报》2007年第1期114-117,共4页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助项目(90307009)

摘　　要：采用5 V 0.6μm标准CMOS工艺设计制造了具有RS232串行通信发送接口的传感器接口芯片.该芯片包含电荷泵和发送电路两个功能模块.其中电荷泵对5 V电源进行正/负倍压得到+7.6 V和-6.1 V的正负电平,并作为发送电路的电源,实现CMOS/TTL电平到EIA/TIA RS-232C电平的转换.3 KΩ和1 000 pF负载情况下,在230.4 kbit/s数据速率范围内,实现了TTL/CMOS电平到RS232电平转换的发送功能.将传感器的输出模拟信号经A/D变换后,即可经所设计的发送接口芯片实现传感信号的串行发送.为进一步实现基于标准CMOS工艺的传感器与信号处理电路和串行通信接口功能的兼容集成打下了基础.A chip of RS232 serial communication transmitter interface circuit used for sensor IC is designed and fabricated with 0. 6 μm standard CMOS process. The chip consists of two modules of charge pump and transmitter circuits. Under ＋5 V single supply, positive and negative doubling voltages （＋7. 6 V/-6. 1 V） are achieved with charge pump, which can be used as supply voltage for transmitter circuit. The transmitter acts as level and logic transfer unit and converts TTL/CMOS levels to EIA/TIA RS-232C levels that is required for serial data communication. The chip realizes the conversion of TTL/CMOS levels to RS232 levels at 230. 4 kbit/s data rate under 3 kΩ and 1 000 pF loads. This chip makes the basis for compatible integration of serial communication interface circuits with conventional CMOS sensor and signal processing circuits.

关 键 词：RS232串行接口 10.6μm CMOSI集成传感器 电荷泵 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]