Print Email Facebook Twitter A Pitch-Matched Low-Noise Analog Front-End With Accurate Continuous Time-Gain Compensation for High-Density Ultrasound Transducer Arrays Title A Pitch-Matched Low-Noise Analog Front-End With Accurate Continuous Time-Gain Compensation for High-Density Ultrasound Transducer Arrays Author Guo, P. (TU Delft Electronic Instrumentation) Chang, Z.Y. (TU Delft Electronic Instrumentation) Noothout, E.C. (TU Delft ImPhys/Medical Imaging) Vos, H.J. (TU Delft ImPhys/Medical Imaging; Erasmus MC) Bosch, Johan G. (Erasmus MC) de Jong, N. (TU Delft ImPhys/Medical Imaging; Erasmus MC) Verweij, M.D. (TU Delft ImPhys/Medical Imaging; Erasmus MC) Pertijs, M.A.P. (TU Delft Electronic Instrumentation) Date 2022 Abstract This article presents a compact analog front-end (AFE) circuit for ultrasound receivers with linear-in-dB continuous gain control for time-gain compensation (TGC). The AFE consists of two variable-gain stages, both of which employ a novel complementary current-steering network (CCSN) as the interpolator to realize continuously variable gain. The first stage is a trans-impedance amplifier (TIA) with a hardware-sharing inverter-based input stage to save power and area. The TIA's output couples capacitively to the second stage, which is a class-AB current amplifier (CA). The AFE is integrated into an application-specific integrated circuit (ASIC) in a 180-nm high-voltage BCD technology and assembled with a 100 μm-pitch PZT transducer array of 8 × 8 elements. Both electrical and acoustic measurements show that the AFE achieves a linear-in-dB gain error below ±0.4 dB within a 36-dB gain range, which is > 2 × better than the prior art. Per channel, the AFE occupies 0.025 mm2 area, consumes 0.8 mW power, and achieves an input-referred noise density of 1.31 pA/√Hz. Subject Application-specific integrated circuit (ASIC)CapacitorsGainImagingInterpolationpitch-matched analog front-end (AFE)time-gain compensation (TGC)Trajectorytrans-impedance amplifier (TIA)TransducersUltrasonic imagingultrasound imagingvariable gain amplifier (VGA) To reference this document use: http://resolver.tudelft.nl/uuid:c9c53518-019d-465c-b7cb-97bd3bf5aec5 DOI https://doi.org/10.1109/JSSC.2022.3200160 Embargo date 2023-06-30 ISSN 0018-9200 Source IEEE Journal of Solid State Circuits, 58 (6), 1693-1705 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 P. Guo, Z.Y. Chang, E.C. Noothout, H.J. Vos, Johan G. Bosch, N. de Jong, M.D. Verweij, M.A.P. Pertijs Files PDF A_Pitch_Matched_Low_Noise ... Arrays.pdf 3.2 MB Close viewer /islandora/object/uuid:c9c53518-019d-465c-b7cb-97bd3bf5aec5/datastream/OBJ/view