New Feedback Architecture for VCO-Based Delta-Sigma ADCs Utilizing Phase Shifter

• 作 者: Ali Mohammadi Ahmad Ayatollahi
• 机 构: SchoolofElectricalEngineering
• 出 处: 电子科技学刊：英文版
• 发表日期: 2012年3期
• 关键词: 移相器 模数转换器 反馈结构 信号噪声比 模拟转换器 反馈网络 数字转换器 压控振荡器 All-pass irdter delta-sigma analog
• 基金项目: This work was supported by Iran Telecommunication Research Center under Grant No. 4222/500.

The voltage controlled oscillator-based (VCO-based) continuous-time delta-sigma (CTDS) analog to digital converter (ADC) suffers from nonlinearity and mismatch in its feedback network. A new feedback network consisting of a phase shifter is proposed. The