SA5521D - Philips

SA5521D LVDT signal conditioner

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 .

Features

GND 7 N.C. 8 N.C. 9
• 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 D1 Package AMP OUT 1 +IN 2
  –IN 3 LVDT IN 4 DEMOD OUT 5 SYNC 6 GND 7 N.C. 8 TOP VIEW NOTE: 1. SOL — released in large SO package only. 16 V+ 15 CT 14 V REF 13 FEEDBACK 12 OSC 11 OSC 10 VREF/2 9 RT
• LVDT signal conditioning
• RVDT signal conditioning
• LPDT signal conditioning
• Bridge circuits ORDERING INFORMATION DESCRIPTION 18-Pin Plastic Dual In-Line Package (DIP) 16-Pin Smal.