0.5 V CMOS inverter-based tunable transconductor
Tóm tắt
A new technique for CMOS inverter-based tunable transconductors is proposed in this paper. The proposed technique employs the master–slave approach and offers large transconductance tuning range using a control current. The transconductor was designed using triple-well 0.13 μm CMOS process under the ultra low supply voltage of 0.5 V. The circuit features 37 dB open loop gain, CMRR = 31 dB at each output node, PSRR = 90 dB and GBW = 530 MHz for 120 μA current consumption.
Tài liệu tham khảo
Nauta, B. (1992). A CMOS transconductance-C filter technique for very high frequencies. IEEE Journal of Solid-State Circuits, 27(2), 142–153.
Andreani, P., & Mattisson, S. (2002). On the use of Nauta’s transconductor in low-frequency CMOS g m -C bandpass filters. IEEE Journal of Solid-State Circuits, 37(2), 114–124.
Lee, T., & Pan, H. (1997). A low-voltage CMOS transconductor for VHF continuous-time filters. In Proceedings of IEEE ISCAS, Hong-Kong (pp. 213–216). Hong-Kong.
Muñoz, F., Torralba, A., Carvajal, R. G., Tombs, J., & Ramirez-Angulo, J. (2001). Floating-gate-based tunable low-voltage linear transconductor and its application to HF g m -C filters design. IEEE Transactions on Circuits and Systems II, 48(1), 106–110.
Suadet, A., & Kasemsuwan, V. (2010). A CMOS inverter-based class-AB pseudo differential amplifier for HF applications. In IEEE International Conference on Electron Devices and Solid-State Circuits, Hong Kong (pp. 1–4). Hong Kong.
Barthelemy, H., Meillere, S., Gaubert, J., Dahaese, N., & Bourdel, S. (2008). OTA based on CMOS inverters and application in the design of tunable bandpass filter. Analog Integrated Circuits and Signal Processing, 57(3), 169–178.