一种流水线结构ADC

• Format: Patent
• Language: Chinese
• Published: 09.02.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

本申请公开了一种流水线结构ADC，包括M个依次相连的逐次逼近型ADC，各个逐次逼近型ADC的信号输出端并行作为流水线结构ADC的信号输出端；各个逐次逼近型ADC中的比较器均包括预放大电路；第i个逐次逼近型ADC中的预放大电路的输出端作为第i个逐次逼近型ADC的余差放大输出端，与第i+1个逐次逼近型ADC的信号输入端连接；其中，i为小于M的自然数。本申请基于依次相连的逐次逼近型ADC构建了流水线结构ADC，并且将逐次逼近型ADC中比较器的预放大电路复用为连接在相邻两级逐次逼近型ADC之间的余差放大器，节省了大功耗硬件，降低了电路的功耗和硬件消耗，进而提高了产品经济效益。 The application discloses an assembly line structure ADC (Analog to Digital Converter), which comprises M successive approximation type ADCs connected in sequence, and the signal output ends of the successive approximation type ADCs are used as the signal output ends of the pipeline structure ADC in parallel; the comparator in each successive approximation type ADC comprises a pre-amplification circuit; the output end of the pre-amplification circuit in the ith successive approximation type ADC serves as the residual error amplification output end of the ith successive approximation type ADC and is connected with the signal input end of the i+1th successive approximation type ADC; wherein i is a natural number smaller than M.