Title:
DIFFERENTIAL AMPLIFICATION CIRCUIT AND VOLTAGE BUFFER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/083797
Kind Code:
A1
Abstract:
A differential amplification circuit (11) is provided with: differential input terminals (INa, INb); first and second amplification transistors (M1, M2); a common connection node (21c) electrically connected to source electrodes of the first and second amplification transistors; a constant current source (22) connected between the common connection node (21c) and a second power supply line; a voltage detector (30) which detects a common mode input voltage (Vc) from input voltages (Vinp, Vinn) applied to the differential input terminals (INa, INb); and a shunt circuit (40) which forms a current path having a conductance value corresponding to the common mode input voltage (Vc) between a first power supply line (10D) and the common connection node (21c).
Inventors:
MARUYAMA TAKAYA (JP)
TSUTSUMI KOJI (JP)
SHIMOZAWA MITSUHIRO (JP)
TSUTSUMI KOJI (JP)
SHIMOZAWA MITSUHIRO (JP)
Application Number:
PCT/JP2016/082966
Publication Date:
May 11, 2018
Filing Date:
November 07, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03F3/45
Foreign References:
| US20080238549A1 | 2008-10-02 | |||
| JP2002314398A | 2002-10-25 | |||
| JP2011229073A | 2011-11-10 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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