Contents
What is ratiometric measurement?
In ratiometric measurements, the measured quantity is proportional to a ratio of two voltages rather than an absolute voltage. When both voltages are propor- tional to the same reference, the absolute value of the reference does not affect the ratio. A ratiometric resistive bridge measurement is illustrated in Fig.
What is asynchronous ADC?
Asynchronous ADC consists of 3 blocks of units composer OPAMP, Digital Logic and Switch Capacitor. Needs high-speed ADC is needed to convert analog signals to digital which is applied to a multimedia device, especially for video signal applications. Low power consumption is useful for efficient power use.
What is FSR accuracy?
Accuracy: Tekscan’s FSR sensors typically exhibit a linearity of ±3%. View complete force sensor specifications.
What is a ratiometric dye?
Ratiometric, or dual-wavelength, ion indicators are a subcategory of fluorescent dyes utilized for their ability to quantitatively measure intracellular ion concentrations. Using ratios derived from the photometric data gathered, researchers can accurately determine intracellular Ca2+ concentrations.
How do you calculate voltage accuracy?
The complete accuracy can be a calculated as ± (1
How is the accuracy of the ADC dependent?
Accuracy of the ADC is dependent on several key specs, which include integral nonlinearity error (INL), offset and gain errors, and the accuracy of the voltage reference, temperature effects, and AC performance.
What causes an ADC to make an error?
One of the biggest potential sources of errors in an ADC with an internal or external reference is the reference voltage. Often, if the reference is included on-chip, it is not specified adequately.
How many bits of accuracy can a 12 bit ADC give?
For example, a 12-bit ADC with 4LSBs of integral nonlinearity error can give only 10 bits of accuracy at best (assuming the offset and gain errors have been calibrated). A device with 0.5LSBs of INL can give 0.0122% error or 13 bits of accuracy (with gain and offset errors removed).
Why are RTD measurements used in Ratiometric measurement?
Using RTDs in a ratiometric measurement has the advantage in that it eliminates sources of error such as the accuracy and drift of the excitation current source. Below is a typical circuit for a 4-wire RTD ratiometric measurement circuit.