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參數(shù)資料
| 型號： | LM4900M/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.675 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數(shù)： | 12/17頁 |
| 文件大?。?/td> | 843K |
| 代理商： | LM4900M/NOPB |
Electrical Characteristics (Note 1) (Note 2) (Continued)
The following specifications apply for V
DD = 3.3V, for all available packages, unless otherwise specified. Limits apply for TA =
25C
Symbol
Parameter
Conditions
LM4900
Units
(Limits)
Typical
Limit
(Notes 7,
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mV sine p-p
dB
f = 217Hz (Note 10)
73
f = 1KHz (Note 10)
70
f = 217Hz (Note 11)
60
f = 1KHz (Note 11)
68
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 TA =
25C
Symbol
Parameter
Conditions
LM4900
Units
(Limits)
Typical
Limit
(Notes 7,
I
DD
Quiescent Power Supply Current
V
2.6
4
mA (max)
I
SD
Shutdown Current
V
PIN1 =VDD
0.1
2.0
A (max)
V
OS
Output Offset Voltage
V
IN =0V
5
mV
P
O
Output Power
THD = 1% (max); f = 1kHz; R
L =8
130
mW
THD+N
Total Harmonic Distortion+Noise
P
O = 100 mWrms; AVD =2;RL =8
;
20Hz
≤ f ≤ 20kHz, BW < 80kHz
0.4
%
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mV sine p-p
dB
f = 217Hz (Note 11)
58
f = 1KHz (Note 11)
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 and AC 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 TJMAX, θJA, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX =(TJMAX TA)/θJA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4900, TJMAX = 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.
LM4900
www.national.com
4
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