The NE/SA/SE5521 is a signal conditioning circuit for use with Linear Variable Differential Transformers (LVDTs) and Rotary Variable Differential Transformers (RVDTs). The chip includes a low distortion, amplitude-stable sine wave oscillator with programmable frequency to drive the primary of the LVDT/RVDT, a synchronous demodulator to convert the LVDT/RVDT output amplitude and phase to position information, and an output amplifier to provide amplification and filtering of the demodulated signal.
The Philips Semiconductors NE/SA/SE5521 is a signal conditioning circuit intended for use with Linear Variable Differential Transformers (LVDTs) and Rotary Variable Differential Transformers (RVDTs). The chip integrates a low distortion, amplitude-stable sine wave oscillator to drive the primary coil of the transformer. It also includes a synchronous demodulator that converts the output amplitude and phase into position information, along with an output amplifier for signal amplification and filtering.
| Supply Voltage (Single) | 5V to 20V |
|---|---|
| Supply Voltage (Dual) | ±2.5V to ±10V |
| Oscillator Frequency Range | 1kHz to 20kHz |
| Power Dissipation (Typical) | 182mW |
| Sine Wave Distortion (No Load) | 1.5% |
| Demodulator Linearity Error | ±0.05% FS |
It converts the LVDT/RVDT output amplitude and phase into position information.
It is a signal conditioning circuit designed for use with Linear Variable Differential Transformers (LVDTs) and Rotary Variable Differential Transformers (RVDTs).
The device supports a single supply of 5V to 20V or a dual supply of ±2.5V to ±10V.
The typical power dissipation for the device is 182mW.