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LM831 Datasheet(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM831
Descripción Electrónicos  LM831 Low Voltage Audio Power Amplifier
PDF  14 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM831 Datasheet(HTML) 9 Page - National Semiconductor (TI)

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LM831 Circuit Description Refer to the external component diagram and equivalent schematic
The power supply is applied to Pin 9 and is filtered by resis-
tor R1 and capacitor CBY on Pin 16 This filtered voltage at
Pin 16 is used to bias all of the LM831 circuits except the
power output stage Resistor R0 generates a biasing current
that sets the output DC voltage for optimum output power
for any given supply voltage
Feedback is provided to the input transistor Q1 emitter by
R6 and R7
The capacitor CNF on Pin 2 provides unity DC gain for maxi-
mum DC accuracy
Q2 provides voltage gain and the rest of the devices buffer
the output load from Q2’s collector
Bootstrapping of Pin 5 by CBS allows maximum output
swing and improved supply rejection
R5 is provided for bridge (BTL) operation
External Component Diagram
TLH6754 – 12
9



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