A CMOS Lock-In-based Read-out for Interdigitated Electrodes
| Autor: | Belén Calvo, J. Perez-Bailon, Nicolás Medrano, M. T. Sanz-Pascual, Paulina Maya Hernandez |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
business.industry
Sensing applications Amplifier 020208 electrical & electronic engineering 010401 analytical chemistry 02 engineering and technology 01 natural sciences Noise (electronics) 0104 chemical sciences CMOS 0202 electrical engineering electronic engineering information engineering Interdigitated electrode Optoelectronics Medicine High-pass filter business Signal amplification Voltage |
| Zdroj: | I2MTC |
| DOI: | 10.1109/i2mtc43012.2020.9129639 |
| Popis: | An analog lock-in amplifier (LIA) designed to be used in portable sensing applications for high-resolution voltage/current detection is presented. Fully differential circuits for signal amplification and embedded high pass filtering were used in order to increase noise rejection reaching a CMRR at 100 kHz of 109 and 149 dB and low input-referred noise < 26 nV/Hz1/2 and < 7.8 pA/Hz1/2 for voltage and current detection, respectively. Besides, the wide frequency operation range (from 1 kHz to 7 MHz) and resolution of 260 nV and 100 pA of the system make it compatible with the operating range of an array of interdigitated electrodes with several application fields. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|