Abstract
In this study, a low-voltage low-power design of previously introduced analog signal processing element called as Voltage Differencing Inverting Buffered Amplifier (VDIBA) is presented. Level shifter current mirrors are used in the circuit design in order to accomplish the low-voltage low-power operation. The configuration operates only with ±0.4 V supply voltages and consumes power 569 µW at the bias current 50 µA. Also, low-voltage transconductor which has highly linear g m is executed with the use of bulk-driven quasi-floating gate (BD-QFG) and source degeneration techniques. The simulations of the introduced circuit have been performed with 0.18 μm TSMC CMOS technology by SPICE. The theoretical approaches have been confirmed by the simulation results. DOI: http://dx.doi.org/10.5755/j01.eie.22.6.17224
Highlights
In recent times, the use of the battery-operated equipments such as tablets, mobile phones, smart watches and portable medical equipment has pervaded in the world
The simulation results of the introduced Voltage Differencing Inverting Buffered Amplifier (VDIBA) structure have been obtained by SPICE using the 0.18 μm CMOS technology parameters
A novel low voltage low power VDIBA based on bulk-driven quasi floating-gate technique and level shifter current mirror has been suggested
Summary
The use of the battery-operated equipments such as tablets, mobile phones, smart watches and portable medical equipment has pervaded in the world. The novel MOS technologies with channel lengths about level of nanometers are capable of operating with low voltages. Numerous novel active elements which are using differential input signals have been employed in design of diverse analog signal processing applications These active elements can be classified in two groups such as operating with differential input current and differential input voltages. VDIBA consists of two blocks such as Operational Transconductance Amplifier (OTA) and unity gain Inverting Buffered Amplifier (IBA) This structure has a current output terminal as well as a voltage output terminal. A new low-voltage VDIBA structure has been proposed This circuit operates with lower supply voltages using level shifter PMOS current mirrors as an active load. The proposed structure has a desirable frequency response, and exhibits good linearity
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