Every data converter, such as an Analog-to-digital converter (ADC) or Digital-to-analog converter (DAC), requires a voltage reference (VREF) that is either integrated into the data converter or supplied from an external source. Just like the resolution of an ADC, voltage references have ...
ADC_VALUE = the number returned by the ADC, in TM4C's world ranging from 0 to 4095 V_REF = reference voltage (V), or in the discussions above, the value 3.00000 RES = the ADC nominal resolution, ...
The overall precision of a high-resolution, successive-approximation ADC depends on the accuracy, stability, and drive capability of its voltage reference. The switched capacitors on the ADC’s reference input present a dynamic load, so the reference circuit must be able to handle time- and ...
The overall precision of a high-resolution, successive-approximation ADC depends on the accuracy, stability, and drive capability of its voltage reference. The switched capacitors on the ADC's reference input present a dynamic load, so the reference circuit must be able to handle ti...
Reference REF50xx Bandgap Reference Op Amp – RO 10 k + 1 k VREF_OUT C2 10 µF TRIM C1 1 µF R1 10 k C3 10 µF AIN OPA350 R O_OPA350 – + C4 10 µF VREF_IN ADC DOUT Figure 6 shows a voltage-reference circuit that will ade- quately drive a high-resolution ADC. ...
The ADC digital value is consistent with the peak of the voltage spike, so the ADC itself works correctly. The ADC configuration is as follows: * GPIO pin set to analog input * ADC set to 12bit resolution * ADC frequency (4.8...
I think the ADC resolution is worse than when used VREFH = 1.54V. Is there any other expected side effect? 3. When I create 1.54V of VREFH, is it no problem to be created by resistor divider? Or should I add buffer or something? Solved! Go to Solution....
Because of the series reference’s superior initial output voltage and overtemperature performance, this type of device would be used to drive the reference pins of precision ADCs. Beyond 8 or 14 resolution bits, where the size of the least significant bit (LSB) is respectively 0.4% and 0.006...
For high resolution ADC, the accuracy of reference voltage is critical for the whole design. A high precision bandgap voltage reference is needed to provide high accuracy reference voltages. A traditional bandgap reference is hard to meet the accuracy requirement for all the technology corners. In ...
Utilize more of the ADC's full-scale range. Dropping the reference voltage to 0.5V would give you 32% utilization, which might help a little. However, the noise floor won't move. When you hit the noise floor, can't cannot gain any additional resolution. At that point you...