A CMOS multi-parameter biochemical microsensor with temperature control and signal interfacing

A Blueprint for Pervasive Self-Care Infrastructures

“…Although this is possible today using nuclear magnetic resonance spectroscopy, carrying out the diagnostic procedure requires the individual visiting a clinic that holds this massive equipment. Alternatively, a biosensing component [8] combined with an array of silicon based chemical sensors (pH ISFET, Severinghaus type pCO 2 ISFET and an amperometric pO 2 -sensor) that communicate with an implantable wireless sensor node can carry out such disease detection procedure at any situation. Indeed, this case study focuses on two main challenges: successful long-term operation of biosensing networks and end-to-end quality of service of the pervasive Self Care platform with hard response times.…”

Intelligent ISFET sensory system for water quality monitoring

“…Investigations on temperature compensation for ISFET have been addressed in recent efforts [58] - [60], [62]- [64], [73]- [79]. However, in most of their applications, the temperature characteristic of the ISFET device is stabilized at a particular pH or in a narrow pH range, which are not suitable for environmental applications with a broader range of both pH values and temperature values.…”

“…Therefore, one of the essential features of the signal processing circuit is to support temperature compensation scheme. Herewith, the ISFET temperature compensation techniques are reviewed followed by the introduction of a new temperature compensation methodology along with its detailed second-order analysis.Research efforts have been spent on various ISFET temperature compensation techniques[58]-[60], [62]-[64],[66],[69],[73]-[74],[76]-[79] along with interface circuit design. In earlier study[74], the thermal stability of an ISFET is improved when it is biased in an experimental determined athermal operating point.…”