Abstract
This paper presents a compact analog front-end (AFE) circuit integrated with a 100µm-pitch 2D ultrasound transducer array for 3D imaging. To realize time-gain compensation, it consists of two variable gain stages, both of which employ a novel complementary current-steering network to realize continuously-variable gain. The first stage is a transimpedance amplifier with a hardware-sharing current-reuse input stage to save power and area. The second stage is a class-AB current amplifier. Per channel, the AFE occupies only 0.025 mm2, consumes 0.8 mW and achieves an input noise density of 1.31 pA/ $\sqrt{\mathbf{H}} \mathbf{z}$. The measured gain error of ±0.4 dB within a 36 dB overall gain range is 2.5 times better than the prior art.
Original language | English |
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Title of host publication | ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC) |
Subtitle of host publication | Proceedings |
Place of Publication | Danvers |
Publisher | IEEE |
Pages | 163-166 |
Number of pages | 4 |
ISBN (Electronic) | 978-1-6654-3751-6 |
ISBN (Print) | 978-1-6654-3752-3 |
DOIs | |
Publication status | Published - 2021 |
Event | ESSCIRC 2021: IEEE 47th European Solid State Circuits Conference - Virtual at Grenoble, France Duration: 6 Sept 2021 → 9 Sept 2021 Conference number: 47th |
Conference
Conference | ESSCIRC 2021 |
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Country/Territory | France |
City | Virtual at Grenoble |
Period | 6/09/21 → 9/09/21 |