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发表于 2014-8-30 23:52:21
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DESCRIPTION
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.
FEATURES
• Low distortion
• Single supply 5V to 20V, or dual supply ±2.5V to ±10V
• Oscillator frequency 1kHz to 20kHz
• Capable of ratiometric operation
• Low power consumption (182mV typ)
APPLICATIONS
• LVDT signal conditioning
• RVDT signal conditioning
• LPDT signal conditioning
• Bridge circuits
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