SA5521N Datasheet | Philips Semiconductors

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. PIN CONFIGURATIONS F, N Packages AMP OUT 1 +IN 2 - IN 3 LVDT IN 4 DEMOD OUT 5 SYNC 6 18 V+ 17 C T 16 V REF 15 FEEDBACK 14 OSC 13 OSC 12 V REF/2 11 R T 10 N.C. TOP VIEW 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 1k Hz to 20k Hz - Capable of ratiometric operation - Low power consumption (182m V 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 Small Outline Large (SOL) Package 18-Pin Plastic Dual In-Line Package (DIP) 18-Pin Ceramic Dual In-Line Package (CERDIP) 16-Pin Ceramic Dual In-Line Package (CERDIP) TEMPERATURE RANGE 0 to +70°C 0 to +70°C - 40 to +85°C - 55 to +125°C - 40 to +85°C ORDER CODE NE5521N NE5521D SA5521N SE5521F SA5521D DWG # 0407A 0171B 0407A 0583A 0582B ABSOLUTE MAXIMUM RATINGS SYMBOL VCC Supply voltage Split supply voltage Operating temperature range NE5521 SA5521 SE5521 Storage temperature range Power dissipation1 PARAMETER RATING +20 ±10 0 to 70 - 40 to +85 - 55 to +125 - 65 to +125 910 UNIT V V °C °C °C °C m W TA TSTG PD NOTES: 1. For derating, see typical power dissipation versus load curves (Figure 1). August 31,...