A Trimming-Free 3-in-1 Multi-Mode Passive Switched-Capacitor Amplifier With an Absolute Logarithmic Error of 0.5 dB up to 200 ◦C
Abstract
This work presents a 3-in-1 multi-mode amplifier, including automatic gain control (AGC) and logarithmic gain, which achieves a total gain of 9.5–85.5 dB and an input-referred noise (IRN) of 4.7 µVrms within a bandwidth of 136 kHz. The PVT-focused amplifier design operates from −25 ◦C to 200 ◦C and does not require any trimming. Incorporating a parallel piecewise logarithmic approximation using nine passive-switched-capacitor (PSC) stages with a fixed gain of three (0.015 dB error per stage), the temperature stable absolute logarithmic error is 0.5 dB. This leads to a logarithmic conformity error (LCE) of 0.75 % up to 200 ◦C.
Details
- Organisationseinheit(en)
-
Institut für Mikroelektronische Systeme
- Externe Organisation(en)
-
Baker Hughes INTEQ
- Typ
- Artikel
- Journal
- IEEE Journal of Solid-State Circuits
- Band
- 60
- Seiten
- 4310-4320
- Anzahl der Seiten
- 11
- ISSN
- 0018-9200
- Publikationsdatum
- 03.12.2025
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Elektrotechnik und Elektronik
- Elektronische Version(en)
-
https://doi.org/10.1109/JSSC.2025.3608257 (Zugang:
Geschlossen
)
