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LM4844 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4844
Description  Stereo 1.2W Audio Sub-system with 3D Enhancement
PDF  21 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4844 Datasheet(HTML) 4 Page - National Semiconductor (TI)

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Audio Amplifier Electrical Characteristics V
DD = 3.0V (Notes 1, 2)
The following specifications apply for V
DD = 3.0V, unless otherwise specified. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
LM4844
Units
(Limits)
Typical
(Note 6)
Limits (Notes
7, 8)
I
DD
Supply Current
V
IN = 0V, No load;
LD5=RD5=0
Mode 4, 9, 14
4.5
7.5
mA (max)
Mode 2, 7, 12
10
16
mA (max)
Mode 3, 8, 13
11
18
mA (max)
I
SD
Shutdown Current
Mode 0
0.1
2
µA (max)
P
O
Output Power
Speaker; THD+N = 1%;
f = 1kHz; 4
Ω BTL
390
320
mW (min)
Headphone; THD+N = 1%;
f = 1kHz; 32
Ω SE
28
21
mW (min)
THD+N
Total Harmonic Distortion Plus
Noise
LD5=RD5=0
Speaker; P
O = 200mW;
f = 1kHz; 8
Ω BTL
0.05
%
Headphone; P
O = 10mW;
f = 1kHz; 32
Ω SE
0.05
%
V
OS
Offset Voltage
Speaker; LD5 = RD5 = 0
5
40
mV (max)
Headphone; LD5 = RD5 = 0
2
30
mV (max)
N
OUT
Output Noise
A-weighted; 0dB gain;
LD5=RD5=0
Speaker; Mode 2, 3, 7, 8
32
µV
Speaker; Mode 12, 13
41
µV
Headphone; Mode 3, 4, 8, 9
13
µV
Headphone; Mode 13, 14
15
µV
PSRR
Power Supply Rejection Ratio
f = 217Hz, V
rip = 200mVpp;CB = 2.2µF;
0dB Gain Setting; LD5 = RD5 = 0
Speaker; Mode 2, 3, 7, 8
73
dB
Speaker; Mode 12, 13,
66
55
dB (min)
Headphone; Mode 3, 4, 8, 9
78
dB
Headphone; Mode 13, 14
72
62
dB (min)
Xtalk
Crosstalk
LD5=RD5=0
Loudspeaker; P
O = 200mW;
f = 1kHz
85
dB
Headphone; P
O = 10mW;
f = 1kHz
60
dB
T
WU
Wake-up Time
CD4=0;C
B = 2.2µF
70
ms
CD4=1;C
B = 2.2µF
30
ms
Volume Control Electrical Characteristics (Notes 1, 2)
The following specifications apply for 3V
≤ V
DD
≤ 5V and 3V ≤ I2CV
DD
≤ 5V, unless otherwise specified. Limits apply for T
A =
25˚C.
Symbol
Parameter
Conditions
LM4844
Units
(Limits)
Typical
(Note 6)
Limits (Notes
7, 8)
Stereo Volume Control Range
maximum gain setting
6
5.5
6.5
dB (min)
dB (max)
minimum gain setting
-40.5
-41
-40
dB (min)
dB (max)
www.national.com
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