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LM4949TL Scheda tecnica(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte LM4949TL
Spiegazioni elettronici  Stereo Class D Audio Subsystem with OCL Headphone Amplifier
PDF  40 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4949TL Scheda tecnica(HTML) 7 Page - National Semiconductor (TI)

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Electrical Characteristics V
DD = 3.6V (Notes 1, 2)
The following specifications apply for A
V = 0dB,
R
L(SP) =15µH+8
Ω + 15µH, R
L(HP) =32
Ω, f = 1kHz unless otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4949
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 8)
I
DD
Supply Current
LS Mode
Stereo
Mono
6.8
4.9
7.3
5.3
mA (max)
mA (max)
OCL HP Mode
Stereo
Mono
5.8
4.9
6.5
5.5
mA (max)
mA (max)
CC HP Mode
Stereo
Mono
4.7
4.1
5.2
4.6
mA (max)
mA (max)
Stereo LS + HP Mode
9.36
mA
I
SD
Shutdown Supply Current
0.03
1
µA (max)
V
OS
Output Offset Voltage
Headphone
Speaker
6.7
8.9
20
49
mV (max)
mV (max)
P
OUT
Output Power
LS Mode,f=1kHz
R
L =4
Ω, THD+N = 10%
R
L =4
Ω, THD+N = 1%
R
L =8
Ω, THD+N = 10%
R
L =8
Ω, THD+N = 1%
1.24
1
0.765
0.615
W
W
W
W
OCL HP Mode,f=1kHz
R
L =16
Ω, THD+N = 10%
R
L =16
Ω, THD+N = 1%
R
L =32
Ω, THD+N = 10%
R
L =32
Ω, THD+N = 1%
94
76
55
45
mW
mW
mW
mW
CC HP Mode,f=1kHz
R
L =16
Ω, THD+N = 10%
R
L =16
Ω, THD+N = 1%
R
L =32
Ω, THD+N = 10%
R
L =32
Ω, THD+N = 1%
93
75
56
45
mW
mW
mW
mW
THD+N
Total Harmonic Distortion + Noise
Differential Mode, f = 1kHz
HP Mode, R
L =16
Ω,P
OUT = 50mW
OCL
CC
0.021
0.021
%
%
HP Mode, R
L =32
Ω,
P
OUT = 30mW
OCL
CC
0.01
0.01
%
%
LS Mode
R
L =4
Ω,P
OUT = 400mW
R
L =8
Ω,P
OUT = 300mW
0.023
0.02
%
%
THD+N
Total Harmonic Distortion + Noise
Single-Ended Input Mode, f = 1kHz
HP Mode, R
L =16
Ω,P
OUT = 50mW
OCL
CC
0.021
0.017
%
%
HP Mode, R
L =32
Ω,P
OUT = 30mW
OCL
CC
0.02
0.015
%
%
LS Mode
R
L =4
Ω,P
OUT = 400mW
R
L =8
Ω,P
OUT = 300mW
0.05
0.034
%
%
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