The era of SoC design has great dependency on CMOS circuits owing to its low power and high reliability which could contribute in the effective circuit designing. Here, a unique approach for the designing of voltage tunable current differencing transconductance amplifier (CDTA) is reported for the realization of Kerwin–Huelsman–Newcomb (KHN) filter. The proposed design has been simulated by using Cadence Virtuoso simulation tool with 0.18 μm technology parameters. This design is based on input voltage-based gain and frequency of operation tuning approach. In this reported design of filter, cutoff frequency can be tailored by input voltage instead of input current. This relaxes the need for the iterative circuit modifications to work in a particular frequency range. Thus, the reported CDTA design is expected to be robust and offers higher design flexibility as there is now no need of iterative designing and calibration in this approach. This also exhibits retained area requirement as per the current state of the art for the KHN filters. Further, the performance of designed CDTA-based KHN filter has also been verified with the existing KHN filters.

中文翻译：

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基于电流差分跨导放大器（CDTA）的电压可调电流MODE KHN滤波器

SoC设计时代对CMOS电路有很大的依赖，因为它的低功耗和高可靠性有助于有效的电路设计。在这里，报告了一种用于设计电压可调电流差分跨导放大器 (CDTA) 的独特方法，用于实现 Kerwin-Huelsman-Newcomb (KHN) 滤波器。所提出的设计已通过使用 Cadence Virtuoso 仿真工具与 0.18 进行了仿真μm 技术参数。这种设计是基于基于输入电压的增益和工作频率调谐方法。在这个报告的滤波器设计中，截止频率可以通过输入电压而不是输入电流来调整。这放宽了对迭代电路修改以在特定频率范围内工作的需要。因此，报告的 CDTA 设计预计将是稳健的并提供更高的设计灵活性，因为现在不需要在这种方法中进行迭代设计和校准。根据 KHN 过滤器的现有技术，这也表现出保留面积要求。此外，设计的基于 CDTA 的 KHN 滤波器的性能也已经通过现有的 KHN 滤波器进行了验证。