Design and research of RS232 communication circuit used for 0.6um CMOS sensor IC
Shanghai（2007）
摘要
A RS232 transmitter interface circuit used for CMOS sensor IC has been developed in a 0.6mum CMOS technology, which makes it possible to integrate CMOS sensors and subsequent signal processing and communication interface circuits in a single chip. The positive and negative voltages (+7.6V/-6.1V under +5V single supply) are achieved with on-chip charge pump, which are used as supply of transmitter circuit. The transmitter acts as level and logic transfer unit and converts TTL/CMOS level to EIA/TIA RS232 level at 230.4kbps data rate under 3KOmega and 1000pF loads
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关键词
cmos integrated circuits,transmitter circuit,signal processing,5 v,integrated sensor,rs232 communication circuit,charge pump,0.6μm cmos,communication interface circuits,electric sensing devices,rs232 transmitter interface circuit,eia/tia rs232 level,cmos technology,logic transfer unit,ttl/cmos level,0.6 micron,integrated circuit design,rs232 serial communication interface,peripheral interfaces,cmos sensor ic,chip
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