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LM4854 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4854
Description  1.9W Monaural, 85mW Stereo Headphone Audio Amplifier
PDF  29 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4854 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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Electrical Characteristics Bridged-Mode Operation (V
DD = 5V)
The following specifications apply for for the circuit shown in Figure 1 and a measurement bandwith of 20Hz to 80kHz, unless
otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4854
Units
(Limits)
Typical
(Note 8)
Limit
(Notes 9,
10)
P
O
Output Power (Note 11)
THD = 1% (max); f = 1kHz (Note12)
R
L = 3.2
Ω (LM4854LD)
R
L =4
Ω (LM4854LD)
R
L =8
Ω
1.9
1.7
1.1
1.0
W
W
W (min)
THD = 10% (max); f = 1kHz (Note12)
R
L = 3.2
Ω (LM4854LD)
R
L =4
Ω (LM4854LD)
R
L =8
Ω
2.3
2.1
1.3
W
W
W
THD+N
Total Harmonic Distortion+Noise
20Hz
≤ f
IN
≤ 20kHz
R
L =4
Ω,P
O = 1.0W (LM4854LD)
R
L =8
Ω,P
O = 400mW
0.3
0.18
%
%
f
IN = 1kHz
R
L =4
Ω,P
O = 1.5W (LM4854LD)
R
L =8
Ω,P
O = 50mW
0.1
0.08
%
%
S/N
Signal-to-Noise Ratio
f
IN = 1kHz, CBYPASS = 1.0µF
P
O = 900mW, RL =8
Ω
90
dB
Electrical Characteristics : SE Operation (V
DD = 5V)
The following specifications apply for for the circuit shown in Figure 1 and a measurement bandwith of 20Hz to 80kHz, unless
otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4854
Units
(Limits)
Typical
(Note 8)
Limit
(Notes 9,
10)
P
O
Output Power (Note 11)
THD+N = 1.0%, f = 1kHz, R
L =32
Ω
THD+N = 10%, f = 1kHz, R
L =32
Ω
THD+N = 1.0%, f = 1kHz, R
L =16
Ω
THD+N = 10%, f = 1kHz, R
L =16
Ω
93
105
170
200
85
140
mW(min)
mW
mW(min)
mW
THD+N
Total Harmonic Distortion+Noise
20Hz
≤ f
IN
≤ 20kHz
R
L =32
Ω,P
O = 50mW
0.3
%
VOUT
Output Voltage Swing
THD = 1.0%, R
L =5k
Ω
4.0
V
P-P
XTALK
Channel Separation
f
IN = 1kHz, CBYPASS = 1.0µF, RL =32
Ω
55
dB
S/N
Signal-to-Noise Ratio
f
IN = 1kHz, CBYPASS = 1.0µF
P
O = 50mW, RL =32
Ω
90
dB
Electrical Characteristics for Entire Amplifier (V
DD = 3.0V)
The following specifications apply for circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4854
Units
(Limits)
Typical
(Note 8)
Limit
(Notes 9,
10)
I
DD
Quiescent Power Supply Current
V
IN = 0V, IO = 0A, 8
Ω Load
4.0
10
mA (max)
I
STBY
Standby Quiescent Power Supply
Current
V
STANDBY = GND
16.0
20.0
µA (max)
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.005
0.02
µA (max)
V
OS
Output Offset Voltage
8
Ω Load
2.0
40
mV (max)
www.national.com
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