EVAL-CN0288-SDPZ

The EVAL-CN0288-SDPZ is a linear variable differential transformer (LVDT) signal conditioning circuit evaluation board. This circuit can accurately measure linear displacement (position). The circuit evaluation board comprises of AD598 LVDT signal conditioner, AD8615 operational amplifier and AD7992 ADC. The LVDT is a highly reliable sensor because the magnetic core can move without friction and does not touch the inside of the tube. This circuit uses the AD598 LVDT signal conditioner that contains a sine wave oscillator and a power amplifier to generate the excitation signals that drive the primary side of the LVDT. It also converts the secondary output into a dc voltage. The AD8615 rail to rail amplifier buffers the output of the AD598 and drives a low power 12bit successive approximation ADC. The signal conditioning circuitry of the system consumes only 15mA of current from the ±15V supply and 3mA from the +5V supply, making this ideal for remote applications.