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In this paper, an Amplitude Shift Keying (ASK) demodulator circuit for Near Field Communication (NFC) target mode or Radio Frequency Identification (RFID) tag is designed by using sample and hold method. It features envelope detector, switch capacitor filter, dynamic comparator, clock extractor and phase generator. This demodulator was demonstrated and simulated in TSMC 0.18um CMOS technology with...
A signal acquisition IC for 3-input resistive bridge sensors has been realized in 0.18um CMOS. It features a low noise programmable amplifier which achieved 1.8μVrms input referred noise and 120dB CMRR, a SAR ADC with 11.2 bits ENOB, an embedded temperature sensor and configurable oscillator. The active area of the chip is 0.3mm² which consumes 60μW and 18μW at 1.8V supply with output data rate (ODR)...
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