Tag Archives: ADC

Quantization Error and SNR

In earlier posts, we had a glimpse of the term quantization error. This error is introduced during the quantization process in the due course of conversion. The process of quantizing is equivalent to rounding up or truncation of a number. Incase of analog converters, it is the rounding up/truncation of the analog signal to a digital value the ADC can output (or encode). This process of approximation introduces an error called the quantization error into the readings. It other words the errored output is the result of infestation (superimposition) of quantization noise on the input signal. Continue reading Quantization Error and SNR

Introduction to ADC

ADCs ( Analog to Digital Converts ) find their application almost everywhere, ranging from our cell phone to rocket science. The world that we perceive is basically analog in nature, and when we need to capture these worldly changes and process them with our digital world, ADCs come in handy. Almost all sensors make use of ADCs, to bridge the gap between the digital and analog world. The sensors in our mobile phone like the accelerometer, gyro sensor, magnetometer, ambient light sensor etc have ADC in them. These sensors use electro-mechanical systems, or

The sensors in our mobile phone like the accelerometer, gyro sensor, magnetometer, ambient light sensor etc have ADC in them. These sensors use electromechanical systems, or electrochemical systems to convert mechanical or chemical changes into an equivalent electrical signal in the form of voltage. The ADC senses the voltage level and gives a binary output. Performing reverse calculations on this digital value gives us the actual value of the analog signal. Continue reading Introduction to ADC