The SAR method in ADC (analog to digital converter) refers to the successive approximation register method. This is a conversion technique where the ADC approximates the input signal through a series of binary decisions. The SAR ADC sequentially tests each bit of the digital output, adjusting its approximation until it closely matches the analog input signal.
The meaning of SAR in ADC stands for Successive Approximation Register. This is a specific type of ADC that uses a binary search algorithm to convert an analog signal into a digital representation.
The SAR method involves comparing the input signal to a reference voltage and fine-tuning the digital output a little bit by bit.
The successive approximation method in ADC involves a process where the ADC starts with the most significant bit and progressively determines the value of each lower bit. It uses a binary search approach to reduce the range of the analog signal until the digital output accurately represents the input voltage.
The process involves comparing the input voltage with the output of a digital-to-analog converter (DAC) and adjusting the approximation accordingly.
SAR logic works by iteratively comparing the input analog signal to a reference voltage using a series of binary decisions. It starts with the most significant bit and performs comparisons to determine whether each bit should be set to 1 or 0.
The SAR logic updates the digital output based on these comparisons until the final value accurately represents the analog input signal.
Applications of SAR ADC include digital signal processing, data acquisition systems, instrumentation and measuring devices where accurate and rapid analog-to-digital conversion is required. SAR ADCs are used in a wide range of fields, including telecommunications, automotive systems and consumer electronics, due to their accuracy, speed and efficiency