This paper presents an overview of test techniques that offer promising features when Built-In-Self-Test (BIST) must be applied to complex intgrated systems including analog, mixed-signal and RF parts. Emphasis is on techniques exhibiting a good trade-off between test requirements (basically in terms of signal accuracy and frequency) and test quality. 							
						
							
					 															
					Manuel J. Barragan Asian, Gloria Huertas, Adoraci&