LM831 National Semiconductor, LM831 Datasheet
LM831
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LM831 Summary of contents
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... LM831 Low Voltage Audio Power Amplifier General Description The LM831 is a dual audio power amplifier optimized for very low voltage operation The LM831 has two indepen- dent amplifiers giving stereo or higher power bridge (BTL) operation from two- or three-cell power supplies The LM831 uses a patented compensation technique to re- ...
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... L 90 200 rms 1 250 kHz Dual Dual-In-Line Package Top View Order Number LM831M 150 stg 150 260 Tested Limit Unit (Limit) ...
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Typical Performance Characteristics Supply Current vs Supply Voltage Supply Current vs Temperature DC Output vs Supply Voltage PSRR vs Supply Voltage PSRR vs Supply Voltage Separation vs Supply Voltage 6754– 4 ...
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Typical Performance Characteristics Separation vs Frequency Gain vs Frequency Gain vs Frequency (Continued) Power Output vs Supply Voltage Power Output vs Temperature Bandwidth vs BW Capacitance 6754 – 5 ...
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Typical Performance Characteristics Dual Mode R 4 Distortion vs Frequency e L Distortion vs Power Output (Note 2) Power Dissipation vs Power Output (Continued) Dual Mode R 8 Distortion vs Frequency e L Distortion vs Power Output (Note 2) Power ...
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Typical Performance Characteristics BTL Mode R 8 Distortion vs Frequency e L Distortion vs Power Output (Note 2) Power Dissipation vs Power Output (Continued) Device Dissipation vs Ambient Temperature Supply Current vs Power Output Note 2 1 kHz curve is ...
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Typical Applications BTL Amplifier with Minimum Parts 250 kHz 440 OUT L BTL Amplifier for Hi-Fi Quality ...
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Typical Applications (Continued) Low-Cost Power Amplifier (No Bootstrap) For 3-cell applications the 120k resistor should be changed to 20K Dual Amplifier for Hi-Fi Quality kHz 220 mW Ch ...
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... The power supply is applied to Pin 9 and is filtered by resis- tor R and capacitor C on Pin 16 This filtered voltage Pin 16 is used to bias all of the LM831 circuits except the power output stage Resistor R generates a biasing current 0 that sets the output DC voltage for optimum output power for any given supply voltage ...
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... LM831 Circuit Description (Continued) 10 ...
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External Components (Refer to External Component Diagram) Component C Required to stabilize output stage O C Output coupling capacitors for Dual Mode Sets a low-frequency pole in c the frequency response C Bootstrap capacitors Sets a low-frequency pole in the ...
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... Printed Circuit Layout for LM831N Note Power ground pattern should be as wide as possible Supply bypass capacitor should be as close to the IC as possible Output compensation capacitors should also be close to the IC (Foil Side View) Refer to External Component Diagram 6754– 14 ...
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... Physical Dimensions inches (millimeters) Molded SO Package (M) Order Number LM831M NS Package Number M16B 13 ...
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... National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Molded Dual-In-Line Package (N) Order Number LM831N NS Package Number N16E 2 A critical component is any component of a life ...