LVDT Sensor Amplifiers

Analog Devices signal conditioning ICs, together with linear variable differential transformers (LVDTs), can be used to convert mechanical position to a dc voltage. The IC provides both the excitation for the LVDT and the output conversion to dc level with a user selectable gain. ADI LVDT signal conditioners are available to interface with a wide range of LVDTs, including half bridge and standard 4- and 5-wire.
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LVDT Sensor Amplifiers

LVDT Sensor Amplifiers

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LVDTs

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SortOrderPart#Iout DriveCapability (typ
(A)
Excitation Current (typ)
(A)
Excitation Volt Amp (Typ)Excitation Freq (max)
(Hz)
Gain Error
(%)
Vin rms (max)
(V rms)
Offset ErrorExcitation Freq (min_
(Hz)
Offset Drift (ppm/°C)
(ppm/C)
Drift (ppm/°C)
(ppm/C)
1ADA2200Reference Circuit Available--------- 5
2AD698Reference Circuit Available 11m 40m 1.2-21.2 Vrms 20k 0.1 3.5 0.1 20 20 20
3AD598Reference Circuit Available 11m 40m 1.2-20 Vrms 20k 0.4 3.5 0.3 20 7 20
4AD630--------- 2