A Highly Compliant Current Driver for Electrical Stimulator with Compliance Monitor and Digital Controlled Offset Regulation Charge Balancing
| Autor: | Emilia Noorsal, Kriangkrai Sooksood |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Offset (computer science)
business.industry Computer science 020208 electrical & electronic engineering Electrical engineering Current driver 02 engineering and technology Overdrive voltage law.invention CMOS Triode law Electrode 0202 electrical engineering electronic engineering information engineering Output impedance business Voltage |
| Zdroj: | 2020 8th International Electrical Engineering Congress (iEECON). |
| DOI: | 10.1109/ieecon48109.2020.229551 |
| Popis: | A CMOS current driver for electrical stimulator in 0.35μm HVCMOS is presented in this paper. It is based on the regulated cascode current mirror in deep triode region. This driver requires approximately 500mV overdrive voltage over the current of 4μA to 1mA whereas maintaining output impedance higher than 10MΩ. The proposed topology also comes with the possibility to monitor the compliance voltage which is useful for the power-efficient adaptive supply voltage stimulation. Besides, the offset regulation active charge balancing is implemented using digitally controlled additional current sources. It is verified in vitro using a platinum black electrode in saline solution. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|