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 as well as converting the output to dc level with a user selectable gain. ADI’s LVDT signal conditioners are available to interface with a wide range of LVDTs, including half bridge and standard 4- and 5-wire.

PRODUCT SELECTION TABLES

LVDT SENSOR AMPS

Part#
Results: 2
Excitation Frequency (Hz)Voltage Amplitude (V rms)Output Current (mA rms)Output Signal Range (V)Output Signal Current Gain Error (% of FS)Gain Drift (ppm/C of FS)Offset Error (% OF FS)Offset Drift (ppm/C) Inpt Vltg Rng (Vrms)Supply Voltage Range (V)Temp Range (°C)Price* (1000 pcs.)
AD59820 - 20k1.2 - 2040±1111mA0.4200.370.1 - 3.5±13; 0-17.5-40 to 85; 0 to 70 $18.67
AD69820 - 20k1.2 - 21.240±1111mA0.1200.0250.1 - 3.5±13; 0-17.5-40 to 85; -55 to 125 $18.17
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