There is a need to explore circuit application in new emerging technologies for their rapid commercialization as the CMOS technology is approaching its limits. Carbon Nanotube Field-Effect Transistor (CNFET) is a promising candidate for future electronic devices for low-power low-voltage digital or analog circuit application. In this paper, we presented a low-power, low-voltage CNFET operational amplifier (OPAMP) based analog arithmetic computing circuit such as inverting amplifier, noninverting amplifier, summer, substractor, differentiator, and integrator for low-power analog signal processing application. The proposed computing circuits operation are studied by using HSPICE software for circuit simulation at 0.9V input supply voltage. Simulation results show that the proposed computing circuits well suited for low-power low-voltage analog signal processing application for their lower power consumption, and high speed operation. (C) 2013 The Authors. Published by Elsevier Ltd.