Comparison of the most utilized low voltage low power techniques

Comparison of the most utilized low voltage low power techniques

conference paper

Czech

The term Low-Voltage LV Low-Power LP has taken a leading role in analog circuit research over the past decade. Such research involves finding promising ways of making the whole analog system work in the LV LP area. Although the effort to reduce the voltage power supply to ever-lower values seems to be endless, the results achieved from LV LP research are still controversial and fiercely debated. The aforementioned controversial results have been coming up since the results achieved are not adequately balanced, i.e. the LV LP requirement can be fulfilled only at the expense of speed and accuracy of the circuit, and vice versa. However, designers should allocate priority to the most important parameters of their designs. Several MOST design techniques exist for LV LP analog circuits. However, only a few of them have found their way in modern designs, for instance, MOSTs operating in the sub-threshold (weak inversion) region, level shifter techniques, self-cascode structures, bulk-driven (BD) technique, floating gate (FG), and quasi floating gate (QFG). Due to the fact that the most significant part of analog circuit design is the input stage and because the BD technique overcomes the threshold voltage, the BD technique has been considered to be a promising way of realizing LV LP circuits. Since the BD technique is almost well known then will be concise in this paper. This paper discusses mainly FG and QFG techniques.

The term Low-Voltage LV Low-Power LP has taken a leading role in analog circuit research over the past decade. Such research involves finding promising ways of making the whole analog system work in the LV LP area. Although the effort to reduce the voltage power supply to ever-lower values seems to be endless, the results achieved from LV LP research are still controversial and fiercely debated. The aforementioned controversial results have been coming up since the results achieved are not adequately balanced, i.e. the LV LP requirement can be fulfilled only at the expense of speed and accuracy of the circuit, and vice versa. However, designers should allocate priority to the most important parameters of their designs. Several MOST design techniques exist for LV LP analog circuits. However, only a few of them have found their way in modern designs, for instance, MOSTs operating in the sub-threshold (weak inversion) region, level shifter techniques, self-cascode structures, bulk-driven (BD) technique, floating gate (FG), and quasi floating gate (QFG). Due to the fact that the most significant part of analog circuit design is the input stage and because the BD technique overcomes the threshold voltage, the BD technique has been considered to be a promising way of realizing LV LP circuits. Since the BD technique is almost well known then will be concise in this paper. This paper discusses mainly FG and QFG techniques.

Low Voltage, Low Power, Bulk Driven, Floating Gate

Low Voltage, Low Power, Bulk Driven, Floating Gate

KHATIB, N.

2013

26. 6. 2013

Brno

978-80-214-4754-7

Electronic Devices and Systems IMAPS CS International Conference 2013

91

97

7