Multi bit PWMDAC with multi delay inverter

Daichi Kodama, Eri Ioka, Yasuyuki Matsuya

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The conventional local PWM-DAC for the ΔΣ D/A converter generates the PWM wave by dividing the clock signal. In this method, the sampling speed is decreased greatly by increasing the resolution. In this paper, we propose a new PWM-DAC with the Multi-Delay inverter. This DAC does not require the dividing clock as the conventional PWM-DAC. As simulation results, we show that the 5-th order ΔΣ D/A converter with the propose DAC achieves the S/N of 130 dB at the MOS transistor threshold voltage deviation of 100 mV.

Original languageEnglish
Pages (from-to)239-244
Number of pages6
JournalIEEJ Transactions on Electronics, Information and Systems
Issue number2
Publication statusPublished - 2013
Externally publishedYes


  • Data weighted averaging
  • Digital-to-analog converter
  • Multi delay inverter
  • Pulse width modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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