Relaxation DAC with positive and negative polarity output using high-pass filter

Lengkhang Nengvang; Shogo Katayama; Anna Kuwana; Kazufumi Naganuma; Kiyoshi Sasai; Akihisa Iikura; Akira Asao; Takuya Watanabe; Katsuaki Morishita; Haruo Kobayashi

doi:10.1587/elex.20.20220536

LETTER

Relaxation DAC with positive and negative polarity output using high-pass filter

Lengkhang Nengvang, Shogo Katayama, Anna Kuwana, Kazufumi Naganuma, Kiyoshi Sasai, Akihisa Iikura, Akira Asao, Takuya Watanabe, Katsuaki Morishita, Haruo Kobayashi

Author information

Lengkhang Nengvang
Division of Electronics and Informatics, Gunma University
Shogo Katayama
Division of Electronics and Informatics, Gunma University
Anna Kuwana
Division of Electronics and Informatics, Gunma University
Kazufumi Naganuma
Alps Alpine Co., Ltd.
Kiyoshi Sasai
Alps Alpine Co., Ltd.
Akihisa Iikura
Alps Alpine Co., Ltd.
Akira Asao
Alps Alpine Co., Ltd.
Takuya Watanabe
Alps Alpine Co., Ltd.
Katsuaki Morishita
Alps Alpine Co., Ltd.
Haruo Kobayashi
Division of Electronics and Informatics, Gunma University

Keywords: relaxation DAC, high-pass filter, positive and negative polarity

JOURNAL FREE ACCESS

2023 Volume 20 Issue 4 Pages 20220536

DOI https://doi.org/10.1587/elex.20.20220536

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Abstract

This letter presents a relaxation digital-to-analog converter (ReDAC) configuration with positive and negative polarity output with high pass filter (HPF). Its digital input is provided in two’s complement format, to which the proposed ReDAC configuration directly matches. The configuration and principle are shown and the operation has been verified with SPICE simulation. The proposed ReDAC with HPF is an extension of the conventional ReDAC using low-pass filter (LPF) which generates an analog output with only positive polarity.

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