Reference voltage network and analog-to-digital converter using same

• Main Authors: SONG LIN, QU GUANGYANG, LAI CHEN
• Format: Patent
• Language: Chinese; English
• Published: 04.03.2022
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

The invention discloses a reference voltage network and an analog-to-digital converter using the same. A reference voltage routing network matched with the interior of an analog-to-digital conversion chip is designed to provide reference voltage for analog-to-digital conversion circuits of multiple channels, so that the impedance of paths for receiving the reference voltage of the analog-to-digital conversion circuits is basically the same, the reference voltage received by the analog-to-digital conversion circuits is basically the same, and the analog-to-digital conversion chip is more stable. And the influence of the voltage drop on the reference voltage routing network on the reference voltage precision and the analog-to-digital conversion precision is reduced. Therefore, the precision of the analog-to-digital converter can be improved. 公开了一种参考电压网络和应用其的模数转换器。通过对模数转换芯片内部配套的参考电压走线网络进行设计，为多个通道的模数转换电路提供参考电压，使得多个模数转换电路接收参考电压的路径的阻抗基本相同，进而使得多个模数转换电路接收到的参考电压基本一致，减小参考电压走线网络上的压降对参考电压精度以及模数转换精度的影响。由此，可以提高模数转换器的精度。