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LM4682 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4682
Description  10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and DC Volume Control
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4682 Datasheet(HTML) 5 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
15.5V
Input Voltage
−0.3V to V
DD +0.3V
Power Dissipation (Note 3)
Internally Limited
ESD Susceptibility (Note 4)
2000V
ESD Susceptibility (Note 5)
200V
Junction Temperature (Note 6)
150˚C
Storage Temperature
−65˚C
≤ T
A
≤ 150˚C
Soldering Information
LLP Package
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
See AN-450 “Surface Mounting and their Effects on
Product Reliability” for other methods of soldering surface
mount devices.
Operating Ratings (Notes 1, 2)
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
−40˚C
≤ T
A
≤ +85˚C
Supply Voltage
8.5V
≤ V
DD
≤ 15V
Thermal Resistance (LLP Package)
θ
JA
28˚C/W
θ
JC
20˚C/W
Electrical Characteristics (Notes 1, 2, 7)
The following specifications apply for V
DD = 12V, VOLVDD = 5V, RL =8
Ω, LC filter values as shown in Figure 1, unless other-
wise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4682
Units
Typical
Max
Min
V
DD
Operating Supply Voltage Range
12
15
8.5
V
I
S
Quiescent Power Supply Current,
Class D Mode
V
IN =0VRMS,VHPSEL =0V
52
70
mA
Quiescent Power Supply Current,
Headphone Mode
V
IN =0VRMS,VHPSEL = 12V
30
40
mA
I
SD
Quiescent Power Supply Current,
Shutdown Mode
SDB = 0V
0.1
mA
R
IN
Input Resistance in Both Modes
8
k
VOLV
DD
DC Reference Supply Voltage
5.5
3
V
V
IH
Minimum Logic High Input
Voltage
SDB, MUTEB pins
0.7xVOLV
DD
V
V
IL
Maximum Logic Low Input
Voltage
0.3xVOLV
DD
V
V
HPIH
HP Sense High Input Voltage
V
DD-1
V
V
HPIL
HP Sense Low Input Voltage
V
DD/2
V
Power Amplifiers
P
OR
Output Power, Per Channel
THD+N
≤ 1%, f
IN = 1kHz
6.0
5.5
W
P
D1
Power Dissipation
P
O = 7W/Chan, fIN = 1kHz
2.6
W
E
FF1
Efficiency
P
O = 7W/Chan, fIN = 1kHz
84.4
%
THD+N
Harmonic Distortion + Noise
P
O = 6W/Chan, fIN = 1kHz
0.2
%
V
NOISE
Output Noise Voltage, RMS.
A−Weighted
R
SOURCE =50
Ω,C
IN = 1µF,
BW = 8Hz to 22kHz
A-weighted, input referred
13
µV
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mVpp, 1kHz,
V
IN = 0, input referred
f = 50Hz
94
dB
f = 60Hz
94
f 100Hz
93
f = 120Hz
93
f = 1kHz
84
Headphone Amplifiers
www.national.com
5


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