Key result
A proposed low-voltage NMOS-based current differencing buffered amplifier operating at ±1.25 V achieved a -3 dB bandwidth of about 500 MHz in PSPICE simulations.
The proposed NMOS-based CDBA circuit design achieves a 500 MHz bandwidth at a low supply voltage of ±1.25 V, suitable for current-mode ladder filter applications.
May enable low-voltage high-frequency filters; leaves open silicon fabrication and experimental validation.
An integratable circuit technique to realize a low-voltage current differencing buffered amplifier (CDBA) is introduced. The realization scheme is through the modification of a low-input resistance CCII+ and the proposed CDBA can operate with the minimum supply voltage of ±1.25 V. In order that the signal path consists of only NMOS transistors, a negative current mirror using NMOS transistors is employed. With standard 0.5 µm CMOS process parameters, PSPICE simulation results show that the proposed CDBA provides the terminal resistance of , , and the −3 dB bandwidth of about 500 MHz. Application examples employing the proposed CDBA as active elements in the leapfrog simulation of current-mode ladder filters are also included.
No takes yet. Share an insight, caveat, or question.
Tangsrirat et al. (2006) studied this question. Low-voltage NMOS-based current differencing buffered amplifier (CDBA) was evaluated on -3 dB bandwidth. A proposed low-voltage NMOS-based current differencing buffered amplifier operating at ±1.25 V achieved a -3 dB bandwidth of about 500 MHz in PSPICE simulations.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: