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صفحه اصلی
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هفتمین کنفرانس بین المللی میکروالکترونیک ایران
Design and Optimization of a 1‑GHz Folded-Cascode OTA Using the gm/ID Technique With Layout Considerations
نویسندگان :
Sina Kazemi
1
Mehdi Ehsanian
2
1- دانشگاه صنعتی خواجه نصیر الدین طوسی
2- دانشگاه صنعتی خواجه نصیر الدین طوسی
کلمات کلیدی :
Folded-cascode،Optimization،High-frequency،gm/ID،Layout،Transconductcance،CMFB،process variation
چکیده :
This paper presents the design and optimization of a 1 GHz fully differential folded cascode operational transconductance amplifier (OTA) in 180 nm CMOS technology, targeting robust performance for advanced analog and mixed-signal applications. The design is based on gm/ID methodology with precomputed lookup tables to enable systematic transistor sizing and early analytical optimization, while layout-aware considerations are incorporated to mitigate parasitic effects and ensure matching of devices for post-layout performance. The proposed OTA includes a constant-gm bias circuit and a common-mode feedback (CMFB) network, with detailed design and optimization flow for the full circuit. Post-layout simulation demonstrates that the OTA achieves a unity-gain bandwidth of 1 GHz, 73.93° phase margin, and stable operation across process, voltage and temperature (PVT) corners, indicated the effectiveness of the approach for high-speed analog design.
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بیشتر
ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 42.6.0