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參數(shù)資料
| 型號： | LM4804LQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Low Voltage High Power Audio Power Amplifier |
| 中文描述： | 1.9 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC28 |
| 封裝： | LLP-28 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大小： | 820K |
| 代理商： | LM4804LQ |
Electrical Characteristics V
DD
= 3.0V
(Notes 1, 2) (Continued)
The following specifications apply for V
= 3.0V, V
= 6.0V, A
V-BTL
= 20dB, R
L
= 8
, f
IN
= 1kHz, C
B
= 1.0μF, R
1
= 301k
, R
2
= 78.7k
unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4804
Units
(Limits)
Typical
(Note 6)
Limit
(Notes 7, 8)
125
1.65
0.5
TSD
P
OUT
THD+N
Thermal Shutdown Temperature
Output Power
Total Harmomic Distortion + Noise
Output Noise
C (min))
W (min)
%
μV
THD = 2% (max)
P
OUT
= 1.5W
A-Weighted Filter, V
IN
= 0V,
Input Referred
V
RIPPLE
= 200mV
p-p
f = 217Hz
f = 1kHz
(Note 11)
1.8
0.15
30
e
OS
PSRR
Power Supply Rejection Ratio
73
66
1.24
dB (min)
V
FB
Feedback Pin Reference Voltage
1.2772
1.2028
V (max)
V (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
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
T
A
) /
θ
JA
or the given in Absolute Maximum Ratings, whichever is lower.
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 V
in
for minimum shutdown
current.
Note 10:
Shutdown current is measured with components R1 and R2 removed.
Note 11:
Feedback pin reference voltage is measured with the Audio Amplifier disconnected from the Boost converter (the Boost converter is unloaded).
L
www.national.com
4
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM4804LQ/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 |
| LM4804LQX | 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 |
| LM4804LQX/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 |
| LM4805 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3V, 1W Boosted Boomer |
| LM4805_0508 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Voltage High Power Audio Power Amplifier |
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