Details
| Original language | English |
|---|---|
| Title of host publication | 2025 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (electronic) | 9798331503901 |
| ISBN (print) | 979-8-3315-0391-8 |
| Publication status | Published - 21 Sept 2025 |
| Event | 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025 - Taormina, Italy Duration: 21 Sept 2025 → 24 Sept 2025 |
Abstract
In this paper a spur-reduced fully differential VCO-based operational transconductance amplifier (VCO-OTA) is presented. This work extends a state-of-the-art (SOTA) implementation, where a combination of a phase-frequency detector (PFD) and a charge pump (CP) is utilized. The architecture is enhanced by splitting the CP into three CPs while the total current remains the same. Compared to the SOTA architecture our implementation features significantly reduced ripples, i.e., a spur reduction of 13.9 dB, while shifting harmonics to three times higher frequencies due to the higher interleaved clock of the output stage. With a combination of the three CP blocks into a single unit, these improvements are achieved without spending significantly more power or area as compared to the SOTA VCO-OTA.
Keywords
- fully differential amplifier, power efficiency, spur reduction, VCO-OTA
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
- Physics and Astronomy(all)
- Instrumentation
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2025 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025. Institute of Electrical and Electronics Engineers Inc., 2025.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - A Spur-Reduced Power-Efficient Fully Differential VCO-based Operational Transconductance Amplifier
AU - Tang, Kaxin
AU - Flemming, Jesko
AU - Witte, Pascal
AU - Wicht, Bernhard
AU - Siemßen, Hendrik
N1 - Publisher Copyright: © 2025 IEEE.
PY - 2025/9/21
Y1 - 2025/9/21
N2 - In this paper a spur-reduced fully differential VCO-based operational transconductance amplifier (VCO-OTA) is presented. This work extends a state-of-the-art (SOTA) implementation, where a combination of a phase-frequency detector (PFD) and a charge pump (CP) is utilized. The architecture is enhanced by splitting the CP into three CPs while the total current remains the same. Compared to the SOTA architecture our implementation features significantly reduced ripples, i.e., a spur reduction of 13.9 dB, while shifting harmonics to three times higher frequencies due to the higher interleaved clock of the output stage. With a combination of the three CP blocks into a single unit, these improvements are achieved without spending significantly more power or area as compared to the SOTA VCO-OTA.
AB - In this paper a spur-reduced fully differential VCO-based operational transconductance amplifier (VCO-OTA) is presented. This work extends a state-of-the-art (SOTA) implementation, where a combination of a phase-frequency detector (PFD) and a charge pump (CP) is utilized. The architecture is enhanced by splitting the CP into three CPs while the total current remains the same. Compared to the SOTA architecture our implementation features significantly reduced ripples, i.e., a spur reduction of 13.9 dB, while shifting harmonics to three times higher frequencies due to the higher interleaved clock of the output stage. With a combination of the three CP blocks into a single unit, these improvements are achieved without spending significantly more power or area as compared to the SOTA VCO-OTA.
KW - fully differential amplifier
KW - power efficiency
KW - spur reduction
KW - VCO-OTA
UR - http://www.scopus.com/inward/record.url?scp=105021601258&partnerID=8YFLogxK
U2 - 10.1109/PRIME66228.2025.11203413
DO - 10.1109/PRIME66228.2025.11203413
M3 - Conference contribution
AN - SCOPUS:105021601258
SN - 979-8-3315-0391-8
BT - 2025 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025
Y2 - 21 September 2025 through 24 September 2025
ER -