Analog-to-digital converter circuit

• Main Authors: ERIC SOENEN, MARTIN KINYUA, MIGUEL GANDARA
• Format: Patent
• Language: Chinese; English
• Published: 29.06.2018
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

An analog-to-digital converter (ADC) circuit includes a first ADC stage comprising a first successive approximation register (SAR) circuit that is configured to convert a current analog input signal into a first digital signal corresponding to a most-significant-bits (MSB) portion of a current digital output signal, and to generate a residual voltage corresponding to a voltage value difference between the current analog input signal and the first digital signal; a second ADC stage, coupled to the first ADC stage, comprising an amplifier circuit that is configured to amplify the residual voltage; and a third ADC stage, coupled to the second ADC stage, comprising a second SAR circuit that is configured to convert the amplified residual voltage into a second digital signal corresponding to aleast-significant-bits (LSB) portion of the current digital output signal when the first SAR circuit receives a subsequent analog input signal. 种模拟-数字转换器电路包括：第模拟-数字转换器级，包括第逐次逼近寄存器电路，其被配置成将当前模拟输入信号转换成与当前数字输出信号的最高有效位部分对应的第数字信号、