基于TSMC 0.18-μm CMOS 工藝，根據(jù)傳統(tǒng)電流源結(jié)構(gòu)，設(shè)計(jì)了一種新穎啟動(dòng)方式的CMOS 低功耗電流源。啟動(dòng)電路僅采用一個(gè)耗盡型MOS 管，使電路正常工作后啟動(dòng)部分消耗的電流基本降為零。這種結(jié)構(gòu)不僅降低了整個(gè)電路的功耗，而且大大節(jié)省芯片的面積。
關(guān)鍵詞：電流源 啟動(dòng)電路 耗盡管 低功耗

A Low Power CMOS Current Source with Novel Startup Circuit CHEN Si1, YANG Zengwang1, YUN Tinghua2 (1.XZNormal University, Xuzhou Jiangsu, 221116, China 2. Wiscomm Microsystems inc, Shanghai, 200433, China) Abstract： A low power CMOS current source with novel start circuit is designed based on the TSMC 0.18-μm CMOS process. The startup circuit only uses a depletion-mode MOSFET. It can make the startup current decrease to zero. The designed novel current circuit can not only reduce the whole circuit power but also greatly save the area of the chip.
Key words：current source startup circuit depletion-mode MOSFET low power