An auto-input-offset removing floating gate pseudo-differential transconductor
نویسندگان
چکیده
Vdd Vdd Vdd A floating-gate pseudo-differential transconductor is presented, in which the differential input signal is allowed to have a dc offset. Normally such an offset would render a normal CMOS differential pair useless. The circuit "VX v y " inherently removes any dc offset from the floating gates lout(-) lO"I(+) by feedback mechanisms involving Fowler-Nordheim electron tunneling and hot-electron injection. This technique can enable direct cascading of several cells without amplifying and accumulating offsets, or can be used to generate differential current mode signals from a single voltage source that has a dc offset, as with an electret microphone. ~ ....... : +. .., ,> ..
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