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What is Resistance Calibration Without External Elements about?
This document presents a resistance calibration method without external precision elements. It uses switched capacitor circuits to mimic a resistor. The method provides a calibration code corresponding to a 50 ohm termination impedance to avoid signal reflections. It can achieve around 4-7% accuracy using only on-chip elements like metal capacitors, compared to external precision resistors that are typically around 1% accurate. The calibration circuit works by charging and discharging capacitors to compare
- Author
- Emil Hesenov
- Language
- EN