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Philips AN1651 manual Author Les Hadley, Using the NE/SA5234 amplifier, Integrated Circuits

Models: AN1651

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INTEGRATED CIRCUITS

INTEGRATED CIRCUITS

AN1651

Using the NE/SA5234 amplifier

Author: Les Hadley

1991 Oct

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Philips AN1651 manual Author Les Hadley, Using the NE/SA5234 amplifier, Integrated Circuits, 1991 Oct

Contents

Using the NE/SA5234 amplifier Author Les HadleyAN1651 INTEGRATED CIRCUITSII. DETAILED DESCRIPTION Input Stage I. SUMMARYPhilips Semiconductors Figure 1. NE5234 Input StageIII. CHARACTERISTICS Using the NE/SA5234 amplifierAN1651 Intermediate Amplifier and Output Stage FigureUsing the NE/SA5234 amplifier Figure 5. NE5234 Closed Loop Gain vs FrequencyAN1651 Philips SemiconductorsV. GUIDE LINES FOR MINIMIZING NOISE IV. NOISE REFERRED TO THE INPUTFigure 6. Noise Test Circuit Using the NE/SA5234 amplifierFigure 9. NE5234 THD Test Circuits VI. MULTIPLE STAGE CONSIDERATIONSUsing the NE/SA5234 amplifier AN1651Figure 10. THD vs Supply Voltage for 1VRMS Output VII. LOW HARMONIC DISTORTIONFigure 11. THD vs Load Using the NE/SA5234 amplifierX. SLEW RATE RESPONSE IX. LOOP-GAINUsing the NE/SA5234 amplifier AN1651Non-InvertingStage Biasing XI. PROCEDURES Single Supply OperationFigure 14. Single Supply Biasing in Cascade Using the NE/SA5234 amplifier5.9mV V2 ±25.6mV 46.6mVStrain Gauge Bridge Amplifier APPLICATIONS EXAMPLES InstrumentationA 4 to 20mA Current Loop DC Regulators and ServosCommunications and Audio Active filtersStereo Bridge Amplifier Voice Operated MicrophoneFigure 22. Stereo Bridge Amp Figure 21. Active FiltersUsing the NE/SA5234 amplifier AN1651Figure 23. VOX Audio System Fiber Optic Receiver for Low Frequency DataFigureThe Audio Channel Using the NE/SA5234 amplifierNE578 REFERENCESUsing the NE/SA5234 amplifier AN1651Figure 26. Fiber Optic Data Receiver Figure 25. NE570/571/SA571 System LevelUsing the NE/SA5234 amplifier AN1651Using the NE/SA5234 amplifier Figure 27. Half Bridge ServoAN1651 Application note