Invention Application
US20150280666A1 DIFFERENTIAL AMPLIFICATION CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT 有权
差分放大电路和半导体集成电路

  • Patent Title: DIFFERENTIAL AMPLIFICATION CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT
  • Patent Title (中): 差分放大电路和半导体集成电路
  • Application No.: US14626491
    Application Date: 2015-02-19
  • Publication No.: US20150280666A1
    Publication Date: 2015-10-01
  • Inventor: Tomoyuki ARAI
  • Applicant: FUJITSU SEMICONDUCTOR LIMITED
  • Priority: JP2014-072599 20140331
  • Main IPC: H03G1/00
  • IPC: H03G1/00 H03F3/45
DIFFERENTIAL AMPLIFICATION CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT
Abstract:
A differential amplification circuit includes: a first transistor and a second transistor of a differential pair; first and second loads; current sources; and a resistor circuit, wherein the resistor circuit includes: a coarse adjustment part and a fine adjustment part, one of the coarse adjustment part and the fine adjustment part includes a first lateral adjustment part and a second lateral adjustment part which have the same configuration, the first lateral adjustment part and the second lateral adjustment part are connected symmetrically to both sides of a central adjustment part, and the central adjustment part has a circuit configuration symmetrical with respect to two connection nodes with the first lateral adjustment part and the second lateral adjustment part.
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