0.5-V 281-nW Versatile Mixed-Mode Filter Using Multiple-Input/Output Differential Difference Transconductance Amplifiers
| dc.contributor.author | Khateb, Fabian | |
| dc.contributor.author | Kumngern, Montree | |
| dc.contributor.author | Kulej, Tomasz | |
| dc.date.accessioned | 2026-08-06T10:45:05Z | |
| dc.date.available | 2026-08-06T10:45:05Z | |
| dc.date.issued | 2024-01-01 | |
| dc.description.abstract | This paper presents a new low-voltage versatile mixed-mode filter which uses a multiple-input/output differential difference transconductance amplifier (MIMO-DDTA). The multiple-input of the DDTA is realized using a multiple-input bulk-driven MOS transistor (MI-BD-MOST) technique to maintain a single differential pair, thereby achieving simple structure with minimal power consumption. In a single topology, the proposed filter can provide five standard filtering functions (low-pass, high-pass, band-pass, band-stop, and all-pass) in four modes: voltage (VM), current (CM), transadmittance (TAM), and transimpedance (TIM). This provides the full capability of a mixed-mode filter (i.e., twenty filter functions). Moreover, the VM filter offers high-input and low-output impedances and the CM filter offers high-output impedance; therefore, no buffer circuit is needed. The natural frequency of all filtering functions can be electronically controlled by a setting current. The voltage supply is 0.5 V and for a 4 nA setting current, the power consumption of the filter was 281 nW. The filter is suitable for low-frequency biomedical and sensor applications that require extremely low supply voltages and nano-watt power consumption. For the VM low-pass filter, the dynamic range was 58.23 dB @ 1% total harmonic distortion. The proposed filter was designed and simulated in the Cadence Virtuoso System Design Platform using the 0.18 µm TSMC CMOS technology. | |
| dc.identifier.citation | Sensors, 24(1), 2024 | |
| dc.identifier.doi | 10.3390/s24010032 | |
| dc.identifier.issn | 14248220 | |
| dc.identifier.other | 2-s2.0-85181911619 | |
| dc.identifier.uri | https://dspace.kmitl.ac.th/handle/123456789/15375 | |
| dc.source | Sensors | |
| dc.subject | differential difference transconductance amplifier | |
| dc.subject | mixed-mode filter | |
| dc.subject | operational transconductance amplifier | |
| dc.subject | universal filter | |
| dc.title | 0.5-V 281-nW Versatile Mixed-Mode Filter Using Multiple-Input/Output Differential Difference Transconductance Amplifiers | |
| dc.type | Article |