A Single-Branch Third-Order Pole–Zero Low-Pass Filter With 0.014- $\hbox{mm}^{2}$ Die Size and 0.8-kHz (1.25-nW) to 0.94-GHz (3.99-mW) Bandwidth–Power Scalability
A Single-Branch Third-Order Pole–Zero Low-Pass Filter With 0.014- $\hbox{mm}^{2}$ Die Size and 0.8-kHz (1.25-nW) to 0.94-GHz (3.99-mW) Bandwidth–Power Scalability
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具有 0.014- $hbox{mm}^{2}$ 芯片尺寸和 0.8kHz (1.25nW) 至 0.94GHz (3.99mW) 带宽的单分支三阶极点零低通滤波器 –功率可扩展性
DOI：
10.1109/tcsii.2013.2281717
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Yan Wang
中科院分区：
文献类型：
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作者：
Yong Chen;Pui;S. D’Amico;Li Zhang;He Qian;Yan Wang
描述了一种具有超紧凑芯片尺寸和广泛的带宽（BW）-功率可扩展性的单分支三阶低通滤波器。它统一了一个源极跟随器，一个可堆叠的浮动有源电感，和一个前馈电容，构成一个晶体管LC梯形拓扑结构，具有稳定的极点-零点传递函数在宽范围的可调带宽。不同的是，只需要八个晶体管和五个未调谐电容器。该芯片采用0.18 μ mCMOS工艺制作，芯片尺寸为0.014mm2。通过调整偏置电流（以及功率），灵活带宽在1.25 nW时测量为0.8 kHz，在3.99 mW时测量为0.94 GHz。
A single-branch third-order low-pass filter with an ultracompact die size and extensive bandwidth (BW)-power scalability is described. It unifies a source follower , a stackable floating active inductor, and a feedforward capacitor to constitute a transistorized- LC-ladder topology with a stable pole-zero transfer function over a wide range of tunable BW. Differentially, only eight transistors and five untuned capacitors are required. Fabricated in 0.18- μm CMOS, the prototype occupies 0.014- mm2 die size. By scaling the bias current (and, hence, the power), the flexible BW measures 0.8 kHz at 1.25 nW and 0.94 GHz at 3.99 mW.