What is the maximum input voltage which can be applied to ADC0804 if VREF 2 2v?
The voltage at Vref/2 (pin9) of ADC0804 can be externally adjusted to convert smaller input voltage spans to full 8 bit resolution. Vref/2 (pin9) left open means input voltage span is 0-5V and step size is 5/255=19.6V….ADC 0804.
| Vref/2 (pin9) (volts) | Input voltage span (volts) | Step size (mV) |
|---|---|---|
| 0.5 | 0 – 1 | 1/255 = 3.92 |
What is ADC0804 IC?
ADC0804 is an IC(integrated circuit) which converts the input analog voltage to its equivalent digital output. It is a stand alone analog to digital converter. Its not only limited to measuring temperature it can be use anywhere where analog signal is required to be measured.
What is first step of the general algorithm for ADC interfacing?
Explanation: The general algorithm for interfacing ADC contains ensuring the stability of analog input, issuing start of conversion pulse to ADC, reading end of conversion signal to mark the end of a conversion process, reading digital data output of ADC as equivalent digital output. 4.
What is output of DAC0808?
The DAC0808 is an 8-bit monolithic digital-to-analog converter (DAC) featuring a full scale output current settling time of 150 ns while dissipating only 33 mW with ±5V supplies.
Why do we need differential signals in an ADC converter?
For best performance, reduce the input signal range to ensure that the ADC input range is not exceeded. Another key advantage of differential signals is the increased dynamic range. With power supplies dropping to 3.3V and lower, design engineers are looking for ways to achieve greater input dynamic range.
Which is the minimum and maximum ADC range?
The ADC range is the maximum and minimum ADC input (e.g., 0 to +3.3V). The ADC resolution is the smallest distinguishable change in input (e.g., 3.3V/4095, which is about 0.81 mV). The resolution is the change in input that causes the digital output to change by 1. Range (volts) = Precision (alternatives) • Resolution (volts)
What is the output code of an ADC converter?
The output code of the ADC will be a function of the differential voltage, AIN (+) – AIN (-). The pseudo-differential inputs cancel out the DC common-mode voltage. To ensure AIN (-) is stable to within ±0.1LSB, bypass AIN (-) to analog ground with a 0.1µF capacitor.
How is a sensor interfacing with an ADC?
Interfacing a sensor to an ADC requires matching the sensor/signal conditioning output with the ADC input. Voltage output sensors provide either a single-ended or differential output. For single-end signals, all the inputs are referenced to system ground.