1. A Low-Power Tunable Differentiator Using Voltage Difference Transconductance Amplifier (VDTA) for Tunable PD Controller.
- Author
-
Routu, Santosh, Chandra, Satish, Priya, M. Shanmukha, and Kumar, Pankaj
- Subjects
ELECTRIC batteries ,MICROWAVE communication systems ,DIFFERENTIAL amplifiers ,TEMPERATURE control ,VOLTAGE - Abstract
The electronically tunable differentiator using a voltage difference transconductance amplifier (VDTA) is proposed, designed, and analyzed. The simulation was done using the Cadence Virtuoso tool of 45 nm CMOS technology with a supply voltage of ±0.9 V. The maximum power consumption of the proposed circuit is 246 μ W with a total harmonic distortion of 5.4%. The output can be tuned using four parameters: g m 1 , g m 2 , R 1 , and R 2 . The transconductance can be varied using bias current and aspect ratio of CMOS transistors. The utilized area of VDTA layout is 1075.81 μ m
2 . The parasitic impedance affects the output of post-layout simulation and causes little delay compared to schematic. The design has been experimentally verified using LM13700 integrated circuit. The results of the proposed circuit show good agreement with the experimental results and mathematical expressions. The proposed circuit can be used as a tunable PD controller, in which the voltage gain of the proposed circuit is G PD = K p + S K d . The design is versatile and can be used in different applications such as temperature control systems, photo voltaic cells, waveform generators, microwave communications systems, and instrumentation systems. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF