Sirimasakul, Silar

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Sirimasakul, Silar
Alternative Name
Sirimasakul, S.
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Email
silar.si@kmitl.ac.th

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    Item type:Publication,
    Ultra-low-power differential ISFET/REFET readout circuit
    (2009-01-01)
    Thanachayanont, Apinunt
    ;
    Sirimasakul, Silar
    A novel ultra-low-power readout circuit for a pH-sensitive ion-sensitive field-effect transistor (ISFET) is proposed. It uses an ISFET/reference FET (REFET) differential pair operating in weak-inversion and a simple current-mode metal-oxide semiconductor FET (MOSFET) translinear circuit. Simulation results verify that the circuit operates with excellent common-mode rejection ability and good linearity for a single pH range from 4 to 10, while only 4 nA is drawn from a single 1 V supply voltage. © 2009 ETRI.