Precision resistors are critical components in applications such as analog and mixed signal integrated circuits. Reducing the variation of the resistance values of precision resistors over the operational temperature range is critical to maintaining the stability of an analog or mixed signal circuit. In RF circuit applications, precision resistors are needed for I/O circuitry implementing both radio frequency CMOS an RF SiGe technology. High tolerance resistors are important for accurate prediction of models and statistical control. In RF devices and circuits, high tolerance resistors are needed that have good linearity; a low temperature coefficient of resistance (TCR) which is the normalized first derivative of resistance and temperature, and provides an adequate means to measure the performance of a resistor; a high quality factor (Q); and are suitable for high current applications.
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