| 摘要 |
PURPOSE:To average substrate bias effect which affects switching transistors (TR) and eliminate such a defect that input/output characteristic are different depending upon which input terminal a signal is inputted by grounding gate inputs of one series connection circuit group in the opposite order of gate inputs of the other series connection circuit group. CONSTITUTION:One series connection circuit group consists of switching TRs Q1A, Q1B, and Q1C and the other series connection circuit group consists of switching TRs Q2A, Q2B, and Q2C. Gate inputs of the switching TRs Q1A and Q2A are connected selectively to an input terminal A and gate inputs of the switching TRs Q1C and Q2C are connected selectively to an input terminal C. Therefore, it seems that the respective switching TRs have the substrate bias effect at the same time when viewed from the input terminals A, B, and C.
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