Advanced Mixed Signal Concepts Exploiting the Strong Body-Bias Effect in CMOS 22FDX®
Advanced Mixed Signal Concepts Exploiting the Strong Body-Bias Effect in CMOS 22FDX®
复制标题
先进的混合信号概念利用 CMOS 22FDX® 中强大的体偏置效应
DOI:
10.1109/tcsi.2020.3023077
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
F. Gerfers
中科院分区:
文献类型:
--
作者:
E. Wittenhagen;M. Runge;N. Lotfi;H. Ghafarian;Y. Tian;F. Gerfers
In this article, an overview of the most recent fully-depleted silicon on insulator technology (FD-SOI) design techniques in the field of mixed-signal circuits and systems are given. Cutting edge performance is achieved by using dynamic as well as static body-biasing techniques. 22FDX®is a 22nm CMOS FD-SOI technology providing both, a unique wide-band body-bias tuning range in conjunction with minimized parasitic device loads, due to the significant reduced pn junctions in the signal path. As a result, transistor transit frequencies exceeding 400GHz with improved linearity is achieved. With a linear threshold voltage sensitivity of around 75mV per Volt, 22FDX®gives designers a competitive additional degree of freedom. After introducing 22FDX®, a 5-bit 18.5GS/s flash ADC is presented utilizing body-biasing to generate accurate threshold voltage offsets within the comparators and thus omitting a power-hungry resistive ladder. Then, dynamic body-biasing is used for a 1.5GS/s track-and-hold circuit to improve the bandwidth while the leakage is reduced obtaining 80dBc SFDR up to the fourth Nyquist zone. Furthermore, a 26GHz ring oscillator is presented, which utilize the strong threshold voltage sensitivity to fully compensate corner dependency. Finally, a body-biasing controlled DAC linearization technique for multi-bit Sigma-Delta modulators enabling 90dBc SFDR, as well as a DAC driver termination impedance control for a 6GS/s 10-bit automotive Ethernet SST-DAC-Driver are presented.
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DOI:
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期刊:
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