his paper presents novel read-out electronic systems for a fast DNA label-less detection. The capacitive shift due to the hybridization effect is monitored by means of a charge sensitive amplifier and a differential stage. The systems provide an A/D conversion and an evaluation of the capacitive shift amount with a resolution of 11 bit. The read-out solutions demonstrate the ability to identify a 0.01% variation on the capacitive value of the sensor. The investigated techniques are suitable for monolithic systems or for a micro-fabricated array of sensors.
High Resolution Read-out Circuit for DNA Label-Free Detection System / DE VENUTO, Daniela; Riccò, B.. - (2008), pp. 708-711. (Intervento presentato al convegno 9th International Symposium on Quality Electronic Design (ISQED 2008) tenutosi a San Jose, CA, USA nel 17-19 March 2008) [10.1109/ISQED.2008.4479824].
High Resolution Read-out Circuit for DNA Label-Free Detection System
DE VENUTO, Daniela;
2008-01-01
Abstract
his paper presents novel read-out electronic systems for a fast DNA label-less detection. The capacitive shift due to the hybridization effect is monitored by means of a charge sensitive amplifier and a differential stage. The systems provide an A/D conversion and an evaluation of the capacitive shift amount with a resolution of 11 bit. The read-out solutions demonstrate the ability to identify a 0.01% variation on the capacitive value of the sensor. The investigated techniques are suitable for monolithic systems or for a micro-fabricated array of sensors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
