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LM2878P 데이터시트(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 LM2878P
상세설명  LM2878 Dual 5 Watt Power Audio Amplifier
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2878P 데이터시트(HTML) 6 Page - National Semiconductor (TI)

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External Components (Figure 3)
1 R2 R5 R7 R10 Sets voltage gain AV e 1 a R2R5 for
one channel and AV e 1 a R10R7 for
the other channel
2 R4 R8
Resistors set input impedance and sup-
ply bias current for the positive input
3 RO
Works with CO to stabilize output stage
4 C1
Improves power supply rejection (see
Typical Performance Characteristics)
5 C11
Stabilizes amplifier may need to be larg-
er depending on power supply filtering
6 C4 C8
Input coupling capacitor Pins 4 and 8
are at a DC potential of VS 2 Low fre-
quency pole set by
fL e
1
2qR4C4
7 C5 C7
Feedback capacitors Ensure unity gain
at DC Also low frequency pole at
fL e
1
2qR5C5
8 CO
Works with RO to stabilize output stage
9 C2 C10
Output coupling capacitor Low frequen-
cy pole given by
fL e
1
RqRLC2
Typical Applications (Continued)
TLH7934 – 7
FIGURE 3 Stereo Amplifier with AV e 200
TLH7934 – 8
FIGURE 4 LM2878 Servo Amplifier in
Bridge Configuration
6


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