This paper presents a design of CMOS Chua-type analog chaos circuit by using a signal-flow-graph (SFG) method. In this circuit, the transmittance of a nonlinear element is realized by an OTA with a feedback resistor, and other linear elements are realized by op-amp based circuits. The proposed circuit is insensitive to the finite admittance of OTA's and to the parasitics of resistors except a feedback resistor in the nonlinear element. The performance and chaotic behavior of the proposed circuit are confirmed by SPICE simulations.