This paper describes a new architecture of the sigma-delta modulators using a chopper-stabilized configuration. It is show that using this new architecture and without any other circuit techniques, a sigma-delta modulator become immune from the contamination of the inherent low frequency noise, such as offset noise, flicker noise, and clock feedthrough noise. The new architecture can be easily designed from the existing architectures without any stability problems. As an example, a second-order sigma-delta modulator is designed by using the new architecture. The simulation results have definitely shown the excellent immunity from the low frequency noise.