Abstract: An on-line testable and repairable design of continuous-time integrated filters is presented.By designing a redundant built-in programmable block as test reference，each block of the functional circuit can be on-line tested. In case of fault，the faulty block in functional circuit can be substituted by the programmable block，by which on-line repair is achieved.Experimental results demonstrate the effectiveness of the proposed on-line testable and repairable design，with unconspicuous performance degradation of the functional circuit.