发明名称 |
COMPLEMENTARY SOURCE FOLLOWER CIRCUIT |
摘要 |
PROBLEM TO BE SOLVED: To obtain a circuit avoiding generating non-linearity even to the voltage operation of a low power source by inputting a potential difference equal to or smaller than a specific value between power source terminals, allowing an N-type FET to have negative threshold voltage and a P-type FET to have positive threshold voltage and using the positive and negative threshold values having absolute values smaller than applying power voltage. SOLUTION: A complementary source follower circuit connects one of the source/drain terminals of an N-type FET 10 to a power source terminal 12 and one of the source/drain terminals of a P-type FET 11 to a ground terminal 13. There is a relation where the sum of VN1 being a point obtained by extrapolating the curve of the current of the FET 10 to zero current and|VtN|is equal to Vout and a difference between VP1 being a point obtained by extrapolating the curve of the current IP of the FET 11 to zero current and Vdd+|VtP|is equal to (Vdd-Vout). In this case, Vtn and Vtp express the threshold voltage of the N-type and P-type FETs 10 and 11.
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申请公布号 |
JP2001024446(A) |
申请公布日期 |
2001.01.26 |
申请号 |
JP19990192805 |
申请日期 |
1999.07.07 |
申请人 |
NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
HARADA MITSURU;TSUKAHARA TSUNEO |
分类号 |
H01L27/08;H01L21/8234;H01L27/088;H01L29/786;H03F1/30;H03F1/32;H03F3/30;(IPC1-7):H03F1/32;H01L21/823 |
主分类号 |
H01L27/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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