CMOS-based near zero-offset multiple inputs max–min circuits and its applications
CMOS-based near zero-offset multiple inputs maximum circuit and minimum circuits are proposed. The analog signal building blocks including shunt-feedback buffer, voltage-subtraction circuits and current mirrors are deployed for obtained the good performances. This achieved circuit is a simply scheme and able to work with low-power supplies. The input range is obtained around ±600 mV within ±1.5 V power supplies. Near zero-offset and low-output impedance are provided by proposed circuit. The delay of output is less than 5 ns for THD less than 1% and frequency response up to 500 MHz. Half-wave, full-wave rectifiers and 4 bits linear combination Digital-to-Analog Converter (DAC) are raised up to confirm the realistic applications. All performances including the DC-characteristic, frequency response, high-frequency wave output are simulated by PSpice.
KeywordsMaximum circuit Minimum circuit Rectifier DAC
- 2.Inoue, T., Motomura, T., Matsuo, R., & Ueno, F. (1991). New OTA-based analog circuits for fuzzy membership functions and max/min operations. IEICE Transactions E , 74(11), 3619–3621.Google Scholar
- 8.Karadimas, D. S., Mavridis, D. N., & Efstathiou, K. A. (2006, May). A digitally calibrated R-2R ladder architecture for high performance Digital-to-Analog Converters. Proceedings of ISCAS2006 (pp. 4779–4782).Google Scholar