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參數(shù)資料
| 型號： | LM4895MM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 Watt Fully Differential Audio Power Amplifier With Shutdown Select and Fixed 6dB Gain |
| 中文描述： | 0.35 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封裝： | MSOP-10 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大小： | 682K |
| 代理商： | LM4895MM |
Electrical Characteristics V
DD
= 3V
(Notes 1, 2, 8)
The following specifications apply for V
DD
= 3V and 8
load unless otherwise specified. Limits apply for T
A
=
25C. (Continued)
Note 2:
Absolute Maximum Ratings
indicate limits beyond which damage to the device may occur.
Operating Ratings
indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Electrical Characteristics
state DC andAC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 3:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
,
θ
, and the ambient temperature T
. The maximum
allowable power dissipation is P
= (T
JMAX
–T
A
)/
θ
JA
or the number given inAbsolute Maximum Ratings, whichever is lower. For the LM4895, see power derating
currents for additional information.
Note 4:
Human body model, 100pF discharged through a 1.5k
resistor.
Note 5:
Machine Model, 220pF–240pF discharged through all pins.
Note 6:
Typicals are measured at 25C and represent the parametric norm.
Note 7:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 8:
For micro SMD only, shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase I
SD
by a maximum of 2μA.
Note 9:
Unterminated input.
Note 10:
10
terminated input.
Note 11:
When driving 4
loads from a 5V supply, the LM4895LD must be mounted to a circuit board.
External Components Description
(
Figure 1
)
Components
1.
Functional Description
C
S
Supply bypass capacitor which provides power supply filtering. Refer to the
Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section,
Proper Selection of External
Components
, for information concerning proper placement and selection of C
B
.
2.
C
B
Typical Performance Characteristics
LD Specific Characteristics
LM4895LD
THD+N vs Output Power
V
DD
= 5V, 4
R
L
LM4895LD
THD+N vs Frequency
V
DD
= 5V, 4
R
L
, and Power = 1W
20023202
20023210
L
www.national.com
4
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