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LM4832 Datenblatt(PDF) 16 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Teilenummer LM4832
Bauteilbeschribung  Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
PDF  22 Pages
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Hersteller  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4832 Datenblatt(HTML) 16 Page - National Semiconductor (TI)

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Application Information (Continued)
LM4832 SAMPLE LAYOUT
LAYOUT PARTS LIST
Name
Type
Quantity
Capacitors:
C
OUT
1000 µF, elec.,
Digikey #P6205
4
C
MOUT
47 µF, elec., Digikey #P5202
1
C
S
0.33 µF, film, Digikey #P4669
3
C
TONE
8200 pF, ceramic,
Digikey #P4823
4
C
LIN,CMIN,CIN
1 µF, film, Digikey #E1105
6
C
B
0.33 µF, film,
Digikey #EF1334
1
C1
0.1 µF, film, Digikey #EF1104
1
Resistors (all resistors: Digikey #(Value)QBK):
R1
20 k
Ω, 1/4W
1
R2
680 k
Ω, 1/4W
1
R
DATA
1k
Ω, 1/4W
1
R
GND
100
Ω, 1/4W
1
R
PD
100 k
Ω, 1/4W
1
LAYOUT PARTS LIST
Name
Type
Quantity
Connectors:
Banana Jack
Black
Mouser #164-6218
3
Red
Mouser #164-6218
3
RCA Jack
Mouser #16PJ097
7
Stereo
Headphone
Shogyo #JJ-0357-3RT
1
Mono Miniplug
Shogyo #JJ-0357-B
2
36-pin
Centronics
Digikey #1036RF
1
LAYOUT DESCRIPTION
The layout given in the following pages is meant to be con-
nected to a PC by a parallel port (printer) cable. The board is
controlled by software for a Windows PC. The parallel cable
must be the standard type used for hooking up a printer to a
PC: one end is a DB-25 connector andthe other is a 36 pin
Centronics connector.
Banana connections are provided for V
DD, ground, and am-
plifier outputs. Amplifier outputs are also routed to a stereo
headphone jack. RCA connections are provided for amplifier
inputs, loop in, loop out, and microphone out. Mono mini-
plug connectors are provided for microphone inputs.
If required, microphones can be biased using the resistors
R
MIC1 and RMIC2.
This layout is set up to allow the use of the internal tone-
control circuitry or the external loop. The jumper next to each
C
LIN capacitor controls which route the signal should take.
DS100014-31
www.national.com
16



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