MOS帰還抵抗回路を用いたOTAの広入力レンジ化に関する研究

概要

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Recently, the breakdown voltage of device is lower and lower with the development of fabrication process inCMOS, so that the realization of the basic circuit elements operable at low-supply-voltage is desired strongly.However, the low power supply voltage brings the restriction to the flexibility of circuit design, therefore, itis very difficult to satisfy the specification of the circuits. In this paper, an operational taransconductanceamplifier (OTA) using source degeneration circuit (SDC) is proposed. The proposed OTA has advantages oflow-voltage operation and wide-input-range. Moreover as an application of the proposed OTA, a linear-phaselow-pass filter used in read channels of the magnetic storage devices is designed. Performance of the proposedcircuits is evaluated using HSPICE simulations with 0.35μm CMOS device parameters. As the results, theeffectiveness of the proposed OTA can be confirmed.
宮崎大学の論文