A 16-MHz Crystal Oscillator With 17.5- $\mu$ s Start-Up Time Under 10 $^{4}$ -ppm- $\Delta $ F Injection Using Automatic Phase-Error Correction
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Abstract:
Ast start-up crystal oscillators (XOs) based on energy injection with an auxiliary oscillator (AO) are efficacious in improving the energy consumption of duty-cycled the Internet of Things (IoT) devices. Nonetheless, the frequency mismatch ( $Delta$ F) between the injection frequency and the crystal’s resonance frequency restrains the injection efficiency and …