Title:
ＤＡ変換器および無線通信装置
Document Type and Number:
Japanese Patent JP5651627
Kind Code:
B2
Abstract:
In general, according to one embodiment, a DA converter configured to convert a digital signal comprising n (n>1) bits to an analog current to output the analog current from an output terminal, includes n voltage-current converters. Each of them corresponds to each bit of the digital signal and is configured to generate a current depending on the corresponding bit. A k-th (k is an integer of 0 to n−1) voltage-current converter includes a first transistor whose threshold voltage is adjustable. The first transistor includes a semiconductor substrate, a first diffusion region, a second diffusion region, an insulating film, a charge accumulating film, and a gate.
Inventors:
出 口 淳
香 西 昌 平
萩 原 洋 介
鈴 木 正 道
木 下 敦 寛
丸 亀 孝 生
香 西 昌 平
萩 原 洋 介
鈴 木 正 道
木 下 敦 寛
丸 亀 孝 生
Application Number:
JP2012065167A
Publication Date:
January 14, 2015
Filing Date:
March 22, 2012
Export Citation:
Assignee:
株式会社東芝
International Classes:
H03M1/74; H01L21/28; H01L21/336; H01L21/822; H01L21/8238; H01L21/8247; H01L27/04; H01L27/092; H01L27/10; H01L27/115; H01L29/423; H01L29/49; H01L29/788; H01L29/792
Attorney, Agent or Firm:
Katsunuma Hirohito
Yasukazu Sato
Kawasaki 康
Takeshi Sekine
Akaoka 明
Matsuno 知紘
Yasukazu Sato
Kawasaki 康
Takeshi Sekine
Akaoka 明
Matsuno 知紘