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A 1 v 2.5 μw fully-differential ASK demodulator with 12.5 pJ/bit FOM for ultra-low power biomedical applications
- A 1 v 2.5 μw fully-differential ASK demodulator with 12.5 pJ/bit FOM for ultra-low power biomedical applications
- Baik, Seung Yeob; George, Arup Kocheethra; Je, Min Kyu; Lee, Jung Hyup
- DGIST Authors
- Lee, Jung Hyup
- Issue Date
- 60th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2017, 313-316
- Wireless transceivers that receive data and power are important circuit blocks in implantable biomedical devices. In such wirelessly powered devices, supply and common-mode variations increase the error rate of the received data. In this paper we propose a fully-differential amplitude-shift-keying (ASK) demodulator for suppressing the effect of such undesired common mode variations on the received data. The proposed demodulator consists of a fully-differential envelope detector (ED) and programmable gain amplifier (PGA) that operates in the sub-threshold region, and a differential comparator that consumes only dynamic current. The proposed system is implemented in a 0.18 μm CMOS process and consumes 2.5 μα from a 1 V power supply. At a data rate of 200 kbps, this leads to an FOM of 12.5 pJ/bit. © 2017 IEEE.
- Institute of Electrical and Electronics Engineers Inc.
- Related Researcher
Integrated Nano-Systems Lab
Analog and Mixed Signal IC Design; Smart Sensor Systems; Bio-medical ICs and Body Channel Communication Systems
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- Department of Information and Communication EngineeringIntegrated Nano-Systems Lab2. Conference Papers
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