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LM4949 Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4949
Description  Stereo Class D Audio Subsystem with OCL Headphone Amplifier
PDF  40 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4949 Datasheet(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
%
%
www.national.com
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