Near-threshold Computing of Single-rail MOS Current Mode Logic Circuits
نویسندگان
چکیده
Scaling supply voltage is an efficient technique to achieve low power-delay product. This study presents low-power Single-Rail MOS Current Mode Logic (SRMCML) circuits which operate on near-threshold region. The near-threshold operations for the basic SRMCML circuits such as inverter/buffer, OR2/NOR2 and 2/NAND2, OR3/NOR3 and XOR3/NXOR3 are investigated. All circuits are simulated with HSPICE at the SMIC 130 nm CMOS process by varying supply voltage from 0.6V to 1.3V with 0.1V steps. Based on the simulation results, lowering supply voltage is advantageous. The power dissipations of the proposed near-threshold SRMCML basic gates are almost the same as the conventional Dual-Rail MCML (DRMCML) circuits and the delay of the SRMCML is less than the DRMCML because of its single-rail scheme.
منابع مشابه
Single-Rail MOS Current Mode Logic Circuits for Low-Power and High- Speed Applications
Abstract MOS Current-Mode Logic (MCML) is usually used for high-speed applications. However, almost all MCML circuits are realized with dual-rail scheme. The dual-rail logic circuits increase extra area overhead and the complexity of the layout place and route. Moreover, little standard cells of the dualrail logic circuits have been developed for place-and-route tools, such as Cadence Encounter...
متن کاملModeling and Sizing of Power-Gating Single-Rail MOS Current Mode Logic
Almost all power-gating circuits used in MOS current-mode circuits were realized with dual-rail schemes. In this paper, a power-gating scheme for single-rail MOS current mode logic (SRMCML) is presented. The modeling of the sleep transistor in power-gating circuits is constructed and analyzed. The optimization methods for sizing sleep transistors of power-gating circuits are addressed in terms ...
متن کاملPower-Gating Single-Rail MOS Current-Mode Logic Circuits Using High- Threshold PMOS Transistors as Linear Resistors
Abstract: In this paper, a power-gating technology for single-rail MOS Current Mode Logic (SRMCML) circuits is presented, which use the high-threshold PMOS transistors as linear load resistors to reduce the power dissipation in the sleep mode. The basic SRMCML cells, such as buffer/inverter, AND2/NAND2, AND3/NAND3, OR2/NOR2, OR3/NOR3, XOR2/XNOR2, multiplexer, and 1-bit full adder, are used to v...
متن کاملCMOS Logic and Current Mode Logic
This chapter describes basic logic circuits. This can be seen as largely background material for applications in later chapters in the design of dividers and phase detectors in frequency synthesizers. The types of logic discussed will be CMOS rail-to-rail logic, CMOS current mode logic (CML), bipolar CML, and bipolar emitter coupled logic (ECL). Note that CML is a general term and applies to bo...
متن کاملModelling and Near-Threshold Computing of Power-Gating Adiabatic Logic Circuits
This paper introduces a power-gating scheme appropriate for near-threshold operating of single-phase adiabatic circuits. A transmission gate with MOS bootstrapping scheme is used as the power-gating switch, which is used to reduce energy overhead. CAL (Clocked Adiabatic Logic) circuits are investigated. The analytical model for power-gating adiabatic circuits is constructed, and the energy over...
متن کامل