參數(shù)資料
型號(hào)： LM4854MTX/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻／視頻放大
英文描述： 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14
封裝： TSSOP-14
文件頁(yè)數(shù)： 26/29頁(yè)
文件大?。?/td> 1440K
代理商： LM4854MTX/NOPB
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 = 25C.
Symbol
Parameter
Conditions
LM4854
Units
(Limits)
Typical
Limit
(Notes 9,
P
O
Output Power (Note 11)
THD = 1% (max); f = 1kHz (Note12)
R
L = 3.2
(LM4854LD)
R
L =4
(LM4854LD)
R
L =8
1.9
1.7
1.1
1.0
W
W (min)
THD = 10% (max); f = 1kHz (Note12)
R
L = 3.2
(LM4854LD)
R
L =4
(LM4854LD)
R
L =8
2.3
2.1
1.3
W
THD+N
Total Harmonic Distortion+Noise
20Hz
≤ f
IN
≤ 20kHz
R
L =4
,P
O = 1.0W (LM4854LD)
R
L =8
,P
O = 400mW
0.3
0.18
%
f
IN = 1kHz
R
L =4
,P
O = 1.5W (LM4854LD)
R
L =8
,P
O = 50mW
0.1
0.08
%
S/N
Signal-to-Noise Ratio
f
IN = 1kHz, CBYPASS = 1.0F
P
O = 900mW, RL =8
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 = 25C.
Symbol
Parameter
Conditions
LM4854
Units
(Limits)
Typical
Limit
(Notes 9,
P
O
Output Power (Note 11)
THD+N = 1.0%, f = 1kHz, R
L =32
THD+N = 10%, f = 1kHz, R
L =32
THD+N = 1.0%, f = 1kHz, R
L =16
THD+N = 10%, f = 1kHz, R
L =16
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
,P
O = 50mW
0.3
%
VOUT
Output Voltage Swing
THD = 1.0%, R
L =5k
4.0
V
P-P
XTALK
Channel Separation
f
IN = 1kHz, CBYPASS = 1.0F, RL =32
55
dB
S/N
Signal-to-Noise Ratio
f
IN = 1kHz, CBYPASS = 1.0F
P
O = 50mW, RL =32
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 = 25C.
Symbol
Parameter
Conditions
LM4854
Units
(Limits)
Typical
Limit
(Notes 9,
I
DD
Quiescent Power Supply Current
V
IN = 0V, IO = 0A, 8
Load
4.0
10
mA (max)
I
STBY
Standby Quiescent Power Supply
Current
V
STANDBY = GND
16.0
20.0
A (max)
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.005
0.02
A (max)
V
OS
Output Offset Voltage
8
Load
2.0
40
mV (max)
LM4854
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