Title:
信号生成器
Document Type and Number:
Japanese Patent JP5883705
Kind Code:
B2
Abstract:
There is provided a signal generator outputting an analog frequency signal based on a digital value according to a set frequency, which provides excellent noise characteristics, requires no ROM table corresponding to waveform data, and has a simple configuration. A digital signal having a digital value according to a set frequency is integrated to generate a waveform in a sawtooth shape, a waveform in a triangular wave shape is generated based on the waveform, and this waveform output is differentiated and then D/A converted and integrated. A comparator using, for example, the voltage at a midpoint of the triangular wave as a threshold value is used for the integrated output, and a frequency signal of an objective frequency is obtained from the comparator.
Inventors:
Kazuo Akaike
Tsukasa Furuhata
Tsukasa Furuhata
Application Number:
JP2012081959A
Publication Date:
March 15, 2016
Filing Date:
March 30, 2012
Export Citation:
Assignee:
Nippon Denpa Industry Co., Ltd.
International Classes:
H03K7/08; H03B28/00; H03K4/02
Domestic Patent References:
| JP5206732A | ||||
| JP8125442A | ||||
| JP10041816A | ||||
| JP983250A |
Attorney, Agent or Firm:
Toshio Inoue