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參數(shù)資料
| 型號： | LM4951 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Wide Voltage Range 1.8 Watt Audio Amplifier |
| 中文描述： | 寬電壓范圍1.8瓦音頻功率放大器 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 1119K |
| 代理商： | LM4951 |
Electrical Characteristics V
DD
= 3.3V
(Notes 1, 2) (Continued)
The following specifications apply for V
DD
= 3.3V, A
V-BTL
= 6dB, R
L
= 8
unless otherwise specified. Limits apply for T
A
=
25C.
Symbol
Parameter
Conditions
LM4951
Units
(Limits)
Typical
(Note 6)
Limit
(Notes 7, 8)
P
O
Output Power
THD = 1% (max); f = 1kHz
R
L
= 8
Mono BTL
280
230
W (min)
THD+N
Total Harmomic Distortion + Noise1 P
O
= 100mWrms; f = 1kHz
A
V-BTL
= 6dB
0.07
0.5
% (max)
THD+N
Total Harmomic Distortion + Noise1 P
O
= 100mWrms; f = 1kHz
A
V-BTL
= 26dB
A-Weighted Filter, R
i
= R
f
= 20k
Input Referred, Note 10
V
RIPPLE
= 200mV
p-p
, f = 217Hz,
C
B
= 1μF, Input Referred
0.35
%
e
OS
Output Noise
10
μV
PSRR
Power Supply Rejection Ratio
71
61
dB (min)
Note 1:
All voltages are measured with respect to the GND 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
,
θ
, and the ambient temperature, T
. The maximum
allowable power dissipation is P
DMAX
= (T
T
) /
θ
or the given inAbsolute Maximum Ratings, whichever is lower. For the LM4951 typical application (shown
in
Figure 1
) with V
DD
= 7.5V, R
L
mono-BTL operation the max power dissipation is 1.42W.
θ
JA
= 73C/W.
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:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9:
Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to GND for minimum shutdown
current.
Note 10:
Noise measurements are dependent on the absolute values of the closed loop gain setting resistors (input and feedback resistors).
L
www.national.com
4
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM4951A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection |
| LM4951ASD | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4951ASD/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4951ASDBD | 功能描述:BOARD EVALUATION FOR LM4951A RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| LM4951ASDBD/NOPB | 功能描述:音頻 IC 開發(fā)工具 LM4951ASD EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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