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Patent Searching and Data


Title:
DIGITAL/ANALOG CONVERTER
Document Type and Number:
WIPO Patent Application WO/2019/098239
Kind Code:
A1
Abstract:
Provided is a digital/analog converter which improves DAC performance while giving consideration to switch on-resistance. This digital/analog converter (100) is equipped with: a first partial circuit (10) having a first resistor row (13) and a first switch group (14); a second partial circuit (20B); a first resistor (R0); a third partial circuit (30) having a third resistor row (33) and a third switch group (34); and a fourth partial circuit (40) having a fourth resistor row (44) and a fourth switch group (45). When the resistance value of the first resistor (R0) is R, the combined resistance value of the fourth resistor row (44) is 2(n-m)R, the combined resistance value of the first resistor row (13) is 2(m-1)R, the combined resistance value of the third resistor row (33) is 2(m-1)R, and the combined resistance value of the second partial circuit (20, 20B) is R/(2(n- m )-1).

Inventors:
NAKATSUKA, Junji
Application Number:
JP2018/042136
Publication Date:
May 23, 2019
Filing Date:
November 14, 2018
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H03M1/68; H03M1/76
Foreign References:
JPH06268523A1994-09-22
JP2003309469A2003-10-31
JPH0494220A1992-03-26
JP2009302973A2009-12-24
JPH09294072A1997-11-11
JP2000078014A2000-03-14
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (Umeda Square Bldg, 12-17 Umeda 1-chome, Kita-ku, Osaka-sh, Osaka 01, 〒5300001, JP)
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