CIRCUIT FUNCTION AND BENEFITS
... extended by adding a separate VGA whose gain control input is derived directly from VOUT. This extends the dynamic range by the gain control range of the VGA. For the overall measurement to remain linear in dB, the VGA must provide a linear-in-dB (exponential) gain control function. The VGA gain mus ...
... extended by adding a separate VGA whose gain control input is derived directly from VOUT. This extends the dynamic range by the gain control range of the VGA. For the overall measurement to remain linear in dB, the VGA must provide a linear-in-dB (exponential) gain control function. The VGA gain mus ...
Readout ASIC for SiPM detector of the CTA new
... • Weighted sum of the 16 preamp outputs by digitally controlled resistors • Each resistor has a R-2R like architecture : – Preamp always sees the same load (better for linearity) – 8 bits resolution for gain adjustment – Noisy channels can be digitally removed ...
... • Weighted sum of the 16 preamp outputs by digitally controlled resistors • Each resistor has a R-2R like architecture : – Preamp always sees the same load (better for linearity) – 8 bits resolution for gain adjustment – Noisy channels can be digitally removed ...
Negative feedback
Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.Whereas positive feedback tends to lead to instability via exponential growth, oscillation or chaotic behavior, negative feedback generally promotes stability. Negative feedback tends to promote a settling to equilibrium, and reduces the effects of perturbations. Negative feedback loops in which just the right amount of correction is applied with optimum timing can be very stable, accurate, and responsive.Negative feedback is widely used in mechanical and electronic engineering, but it also occurs naturally within living organisms, and can be seen in many other fields from chemistry and economics to physical systems such as the climate. General negative feedback systems are studied in control systems engineering.