A CMOS Multiplied Input Differential Difference Amplifier: A New Active Device and Its Applications

作者：Sotner Roman^*; Jerabek Jan; Prokop Roman; Kledrowetz Vilem; Polak Josef

来源：Applied Sciences-Basel, 2017, 7(1): 106.

DOI：10.3390/app7010106

• amplitude modulator
• analogue signal processing
• differential difference amplifier
• electronic control
• MIDDA
• multiplication
• on-chip experiments

This paper presents a newly developed active device, referred to as a multiplied input differential difference amplifier (MIDDA), which allows operations of summation/subtraction and multiplication of input signals. It was designed and fabricated using I3T25 0.35 m ON (ON Semiconductor, Phoenix, AZ, USA) Semiconductor technology. The achieved results, which describe the experimentally verified behaviour of the fabricated device, are introduced, as well as the simple applications of MIDDA with electronically controllable parameters, useful for analogue signal processing. Moreover, the paper discusses an interesting example of nonlinear application to a double-sideband amplitude modulator, based on the utilization of multiplication and summation of particular signals. The laboratory experimental results which are achieved through the use of a fabricated prototype (both in time and frequency domain), confirm the workability of the concept.

• 出版日期2017-1