Details
| Original language | English |
|---|---|
| Title of host publication | 2025 IEEE International Solid-State Circuits Conference, ISSCC 2025 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (electronic) | 9798331541019 |
| ISBN (print) | 979-8-3315-4102-6 |
| Publication status | Published - 16 Feb 2025 |
| Event | 72nd IEEE International Solid-State Circuits Conference, ISSCC 2025 - San Francisco, United States Duration: 16 Feb 2025 → 20 Feb 2025 |
Publication series
| Name | 2025 IEEE International Solid-State Circuits Conference (ISSCC) |
|---|
Abstract
Harnessing new renewable energy sources, such as geothermal energy, requires integrated electronics to endure harsh environments with temperatures up to 200°C. Acoustic sensors (e.g., piezoelectric) detect environmental composition, as illustrated in Fig. 3.3.1 (top). Due to the natural wide amplitude range of sound pressure waves (1-to-20kHz), the amplifiers in the sensor front-end need both a wide dynamic range (DR) > 80dB to maintain a reasonable signal-to-noise ratio (SNR) at the ADC input, as well as accurate phase and amplitude measurement across a wide temperature range. While logarithmic amplifiers [1], [2], dB-linear amplifiers [3], or automatic gain control (AGC) [4] achieve a high DR, they require post-processing to restore true amplitude levels. Furthermore, logarithmic amplifiers exhibit considerable temperature dependence. Low-drift amplifiers [5] with a typical gain drift of 0.7 ppm/°C can be used over a wide temperature range, but their precision requires trimmed ratios and temperature compensation, leading to complex circuits with reduced reliability at high temperatures. Stacked constant-time amplifiers [6] can be used to achieve high noise efficiency, but advanced discrete-time amplifiers can achieve even higher efficiencies [7]. However, the drawbacks of aliasing and noise folding have to be addressed.
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
Sustainable Development Goals
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2025 IEEE International Solid-State Circuits Conference, ISSCC 2025. Institute of Electrical and Electronics Engineers Inc., 2025. (2025 IEEE International Solid-State Circuits Conference (ISSCC)).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - A Passive Switched-Capacitor-Based Multimode Amplifier with a Logarithmic Conformity Error of 0.75% from -25 to 200°C
AU - Siemssen, Hendrik
AU - Nowosielski, Rochus
AU - Borchardt, Holger
AU - Mueller, Jan
AU - Wicht, Bernhard
N1 - Publisher Copyright: © 2025 IEEE.
PY - 2025/2/16
Y1 - 2025/2/16
N2 - Harnessing new renewable energy sources, such as geothermal energy, requires integrated electronics to endure harsh environments with temperatures up to 200°C. Acoustic sensors (e.g., piezoelectric) detect environmental composition, as illustrated in Fig. 3.3.1 (top). Due to the natural wide amplitude range of sound pressure waves (1-to-20kHz), the amplifiers in the sensor front-end need both a wide dynamic range (DR) > 80dB to maintain a reasonable signal-to-noise ratio (SNR) at the ADC input, as well as accurate phase and amplitude measurement across a wide temperature range. While logarithmic amplifiers [1], [2], dB-linear amplifiers [3], or automatic gain control (AGC) [4] achieve a high DR, they require post-processing to restore true amplitude levels. Furthermore, logarithmic amplifiers exhibit considerable temperature dependence. Low-drift amplifiers [5] with a typical gain drift of 0.7 ppm/°C can be used over a wide temperature range, but their precision requires trimmed ratios and temperature compensation, leading to complex circuits with reduced reliability at high temperatures. Stacked constant-time amplifiers [6] can be used to achieve high noise efficiency, but advanced discrete-time amplifiers can achieve even higher efficiencies [7]. However, the drawbacks of aliasing and noise folding have to be addressed.
AB - Harnessing new renewable energy sources, such as geothermal energy, requires integrated electronics to endure harsh environments with temperatures up to 200°C. Acoustic sensors (e.g., piezoelectric) detect environmental composition, as illustrated in Fig. 3.3.1 (top). Due to the natural wide amplitude range of sound pressure waves (1-to-20kHz), the amplifiers in the sensor front-end need both a wide dynamic range (DR) > 80dB to maintain a reasonable signal-to-noise ratio (SNR) at the ADC input, as well as accurate phase and amplitude measurement across a wide temperature range. While logarithmic amplifiers [1], [2], dB-linear amplifiers [3], or automatic gain control (AGC) [4] achieve a high DR, they require post-processing to restore true amplitude levels. Furthermore, logarithmic amplifiers exhibit considerable temperature dependence. Low-drift amplifiers [5] with a typical gain drift of 0.7 ppm/°C can be used over a wide temperature range, but their precision requires trimmed ratios and temperature compensation, leading to complex circuits with reduced reliability at high temperatures. Stacked constant-time amplifiers [6] can be used to achieve high noise efficiency, but advanced discrete-time amplifiers can achieve even higher efficiencies [7]. However, the drawbacks of aliasing and noise folding have to be addressed.
UR - http://www.scopus.com/inward/record.url?scp=105000823406&partnerID=8YFLogxK
U2 - 10.1109/ISSCC49661.2025.10904807
DO - 10.1109/ISSCC49661.2025.10904807
M3 - Conference contribution
AN - SCOPUS:105000823406
SN - 979-8-3315-4102-6
T3 - 2025 IEEE International Solid-State Circuits Conference (ISSCC)
BT - 2025 IEEE International Solid-State Circuits Conference, ISSCC 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 72nd IEEE International Solid-State Circuits Conference, ISSCC 2025
Y2 - 16 February 2025 through 20 February 2025
ER -