A fully-differential, flipped-voltage-follower-based (FVF) transimpedance design for optical receivers with large-area photodetectors

Ali Doğuş Güngördü, İrem Cömertoğlu, Mustafa Berke Yelten*

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Özet

This article presents a transimpedance amplifier (TIA) design suitable for 1 Gbps operation using a 4-level pulse amplitude modulation scheme. It is aimed toward communication protocols with large-area photodetectors, such as plastic-optical-fiber, visible light communications, and biomedical applications. The TIA leverages a flipped-voltage-follower as well as global current feedback to extend the bandwidth of the TIA and operates up to 400 MHz with a very low static power while driving a very large capacitance. The TIA has a static power consumption of only 1.2 mW at a 1 V supply voltage. Additionally, the fully-differential version of the proposed TIA is introduced in the case of using spatially-modulated light detectors. The design is validated with post-layout simulations employing a commercially available 40 nm CMOS process. Mismatch and corner simulations demonstrate that the proposed TIA can still provide the specifications in the worst-case scenarios.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)241-248
Sayfa sayısı8
DergiAnalog Integrated Circuits and Signal Processing
Hacim113
Basın numarası2
DOI'lar
Yayın durumuYayınlandı - Kas 2022

Bibliyografik not

Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Finansman

This work was supported by the Technological Research Council of Turkey under the Project TÜBİTAK 1001 118E253.

FinansörlerFinansör numarası
Technological Research Council of TurkeyTÜBİTAK 1001 118E253

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