Rc oscillator ’ s frequency is 1khz . the voltage reference of ic is 2 . 2v , which can keep stabilization when the power supply is bigger than 2 . 3v . in that case circuits can insulate yawp from power supply 在穩(wěn)壓源電路設(shè)計(jì)中,采用了運(yùn)算放大器負(fù)反饋的形式,使參考電壓源為2 . 2v ,并在電源大于2 . 3v時(shí)保持穩(wěn)定,隔離了電源噪聲。
After that , there was the core of project : design of the circuits in ic . the design and simulations of oscillator circuit and reference voltage circuit were placed behind it where rc oscillator ’ s design and how to build a reference voltage circuit by amplifier were discussed 文章的核心是芯片電路的設(shè)計(jì),首先根據(jù)電路功能設(shè)計(jì)了芯片大體的結(jié)構(gòu)和引腳,詳細(xì)列出芯片在應(yīng)用時(shí)的外圍電路,對(duì)設(shè)計(jì)需要達(dá)到的參數(shù)標(biāo)準(zhǔn)做了簡(jiǎn)要介紹。
A typical calculator chip from rcl semiconductor inc , c9821 , is referenced and developed . the chip of the calculator consists of several function units such as rc oscillator , power management module , microprogrammed control unit ( mcu ) , register group , lcd driver and keyboard interface 在硬件方面,在完成計(jì)算器的功能模塊劃分的基礎(chǔ)上,對(duì)包括rc振蕩器、電源模塊、 lcd顯示驅(qū)動(dòng)模塊、鍵盤接口、寄存器組、微程序控制器在內(nèi)的各個(gè)功能模塊的系統(tǒng)結(jié)構(gòu)和電路原理進(jìn)行了分析,掌握了它們的設(shè)計(jì)方法。
百科解釋
Linear electronic oscillator circuits, which generate a sinusoidal output signal, are composed of an amplifier and a frequency selective element, a filter. An oscillator circuit which uses an RC network, a combination of resistors and capacitors, for its frequency selective part is called an RC oscillator.