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參數(shù)資料
| 型號： | LM4892LD |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 Watt Audio Power Amplifier with Headphone Sense |
| 中文描述： | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封裝： | LLP-10 |
| 文件頁數(shù)： | 3/22頁 |
| 文件大小： | 1037K |
| 代理商： | LM4892LD |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 2)
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 3)
ESD Susceptibility (Note 4)
ESD Susceptibility (Note 5)
Junction Temperature
Thermal Resistance
θ
JC
(SOP)
θ
JA
(SOP)
θ
JA
(micro SMD)
6.0V
65C to +150C
0.3V to V
DD
+0.3V
Internally Limited
2500V
250V
150C
35C/W
150C/W
220C/W
θ
JC
(MSOP)
θ
JA
(MSOP)
θ
JA
(LLP)
Soldering Information
See AN-1112 ’microSMD Wafers Level Chip Scale
Package’.
See AN-1187 ’Leadless Leadframe Package (LLP)’.
56C/W
190C/W
220C/W (Note 9)
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage
40C
≤
T
A
≤
85C
2.2V
≤
V
DD
≤
5.5V
Electrical Characteristics V
DD
= 5V
The following specifications apply for V
DD
= 5V, A
V
= 2, and 8
load unless otherwise specified. Limits apply for T
A
= 25C.
(Notes 1, 2)
Symbol
Parameter
Conditions
LM4892
Units
(Limits)
Typical
(Note 6)
4
2.5
0.1
Limit
(Note 7)
10
I
DD
Quiescent Power Supply Current
V
IN
= 0V, I
o
= 0A, HP sense = 0V
V
IN
= 0V, I
o
= 0A, HP sense = 5V
Vshutdown = GND (Note 8)
THD = 2% (max), f = 1kHz,
R
L
= 8
, HP Sense
<
0.8V
THD = 1% (max), f = 1kHz,
R
L
= 32
, HP Sense
>
4V
mA (max)
mA (max)
μA (max)
W
I
SD
Shutdown Current
P
o
Output Power
1
90
mW
V
IH
V
IL
THD+N
HP Sense high input voltage
HP Sense low input voltage
Total Harmonic Distortion+Noise
4
V (min)
V (max)
0.8
P
o
= 0.4 W
rms
; f = 1kHz 10Hz
≤
BW
≤
80kHz
V
ripple
= 200mV sine p-p
0.1
%
PSSR
Power Supply Rejection Ratio
62 (f =
217Hz) 66 (f
= 1kHz)
dB
Electrical Characteristics V
DD
= 3.3V
The following specifications apply for V
DD
= 3.3V, A
V
= 2, and 8
load unless otherwise specified. Limits apply for T
A
= 25C.
(Notes 1, 2)
Symbol
Parameter
Conditions
LM4892
Units
(Limits)
Typical
(Note 6)
3.5
2.0
0.1
Limit
(Note 7)
I
DD
Quiescent Power Supply Current
V
IN
= 0V, I
o
= 0A, HP sense = 0V
V
IN
= 0V, I
o
= 0A, HP sense = 3.3V
Vshutdown = GND (Note 8)
THD = 1% (max), f = 1kHz,
R
L
= 8
, HP Sense
<
0.8V
THD = 1% (max), f = 1kHz,
R
L
= 32
, HP Sense
>
3V
mA (max)
mA (max)
μA (max)
I
SD
Shutdown Current
P
o
Output Power
0.4
W
35
mW
V
IH
V
IL
THD+N
HP Sense high input voltage
HP Sense low input voltage
Total Harmonic Distortion+Noise
2.6
0.8
V (min)
V (max)
P
o
= 0.15 W
rms
; f = 1kHz 10Hz
≤
BW
≤
80kHz
0.1
%
L
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