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參數(shù)資料
| 型號： | LDA08B |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode |
| 中文描述： | 在3.3V電源音頻功率放大器265mW的關(guān)斷模式 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大?。?/td> | 772K |
| 代理商： | LDA08B |
Electrical Characteristics
(Note 1) (Note 2)
The following specifications apply for V
DD
= 2.6V, for all available packages, unless otherwise specified. Limits apply for T
A
=
25C
Symbol
Parameter
Conditions
LM4900
Units
(Limits)
Typical
(Note 6)
Limit
(Notes 7,
9)
4
2.0
I
DD
I
SD
V
OS
P
O
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
V
IN
= 0V, I
O
= 0A (Note 8)
V
PIN1
= V
DD
V
IN
= 0V
THD = 1% (max); f = 1kHz; R
L
= 8
2.6
0.1
5
130
mA (max)
μA (max)
mV
mW
THD+N
Total Harmonic Distortion+Noise
P
O
= 100 mWrms; A
VD
= 2; R
L
= 8
;
20Hz
≤
f
≤
20kHz, BW
<
80kHz
V
RIPPLE
= 200mV sine p-p
f = 217Hz (Note 11)
f = 1KHz (Note 11)
0.4
%
PSRR
Power Supply Rejection Ratio
dB
58
63
Note 1:
All voltages are measured with respect to the ground pin, unless otherwise specified.
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
JMAX
,
θ
JA
, and the ambient temperature T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
T
A
)/
θ
JA
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4900, T
JMAX
=
150C. The typical junction-to-ambient thermal resistance, when board mounted, is 190C/W for package number MUA08A.
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:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8:
The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.
Note 9:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 10:
Unterminated input.
Note 11:
10
terminated input.
L
www.national.com
4
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