Description
a .
EXCITATION (CARRIER) VA 11 OSC AMP
LVDT Signal Conditioner AD598
FUNCTIONAL BLOCK DIAGRAM
3 2
17 A.
B A+B
AD598
FILTER AMP 16 VOUT
LVDT
10.
Features
* Single Chip Solution, Contains Internal Oscillator and Voltage Reference No Adjustments Required Insensitive to Transducer Null Voltage Insensitive to Primary to Secondary Phase Shifts DC Output Proportional to Position 20 Hz to 20 kHz Frequency Range Single or Dual Supply Operation Unipolar or Bipo
Applications
* or in hostile environments where the interface electronics may be remote from the LVDT. The AD598 can drive an LVDT at the end of 300 feet of cable, since the circuit is not affected by phase shifts or absolute signal magnitudes. The position output can drive as much as 1000 feet of cable. 7. The AD