Title:
CIRCUIT DEVICE
Document Type and Number:
Japanese Patent JP2022029594
Kind Code:
A
Abstract:
To provide a circuit device, etc., capable of controlling a wave shape formation based on whether the gate voltage of an output transistor has reached a determination voltage.SOLUTION: A circuit device 100 includes an output terminal TQ, an output transistor 110 and a gate voltage control circuit 120. The output transistor 110 is provided between a first power node NVSS and the output terminal TQ. The gate voltage control circuit 120 changes the gate voltage Vgate of the output transistor 110 at a first time-voltage change rate after an input signal TX has transited from a first logic level to a second logic level, changes the gate voltage Vgate at a second time-voltage change rate smaller than the first time-voltage change rate after the gate voltage Vgate has reached a first determination voltage Va, and changes the gate voltage Vgate at a third time-voltage change rate larger than the second time-voltage change rate after the gate voltage Vgate has reached a second determination voltage Vb.SELECTED DRAWING: Figure 1
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Inventors:
SAKAMOTO YOSHIFUMI
NISHIMURA MOTOAKI
NISHIMURA MOTOAKI
Application Number:
JP2020132949A
Publication Date:
February 18, 2022
Filing Date:
August 05, 2020
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
H03K19/0175; H03K4/00
Attorney, Agent or Firm:
Noboru Takekoshi
Inoue Hajime
Yasushi Kuroda
Hiroaki Nishikawa
Yukazu Aihara
Inoue Hajime
Yasushi Kuroda
Hiroaki Nishikawa
Yukazu Aihara