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參數(shù)資料
| 型號： | LM4992 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 運動控制電子 |
| 英文描述： | 420mW Stereo Cell Phone Audio Amplifier |
| 中文描述： | 420mW立體聲手機音頻放大器 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 576K |
| 代理商： | LM4992 |
Electrical Characteristics V
DD
= 2.6V
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A
= 25C.
(Notes 1, 2)
Symbol
Parameter
Conditions
LM4992
Units
(Limits)
Typical
(Note 6)
4.0
6.0
0.02
1.2
1.0
5
240
Limit
(Notes 7, 8)
I
DD
Quiescent Power Supply Current
V
IN
= 0V, I
o
= 0A, No Load
V
IN
= 0V, I
o
= 0A, 8
Load
V
SD
= V
GND
mA (max)
mA (max)
μA (max)
V
V
mV (max)
I
SD
V
SDIH
V
SDIL
V
OS
P
o
Shutdown Current
Shutdown Voltage Input High
Shutdown Voltage Input Low
Output Offset Voltage
Output Power
2.0
30
THD = 1% (max); f = 1 kHz, per
channel
mW (min)
T
WU
THD+N
Xtalk
Wake-up time
Total Harmonic Distortion+Noise
Crosstalk
70
0.1
80
ms
%
dB
P
o
= 0.15 Wrms; f = 1kHz
PSRR
Power Supply Rejection Ratio
V
ripple
= 200mV sine p-p
Input terminated with 10
51 (f =
217Hz)
51 (f = 1kHz)
dB (min)
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
,
θ
, 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 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:
R
OUT
is measured from the output pin to ground. This value represents the parallel combination of the 10k
output resistors and the two 20k
resistors.
Note 10:
If the product is in Shutdown mode and V
DD
exceeds 6V (to a max of 8V V
DD
), then most of the excess current will flow through the ESD protection circuits.
If the source impedance limits the current to a max of 10mA, then the device will be protected. If the device is enabled when V
DD
is greater than 5.5V and less than
6.5V, no damage will occur, although operation life will be reduced. Operation above 6.5V with no current limit will result in permanent damage.
Note 11:
Maximum power dissipation in the device (P
DMAX
) occurs at an output power level significantly below full output power. P
DMAX
can be calculated using
Equation 1 shown in the
Application Information
section. It may also be obtained from the power dissipation graphs.
L
www.national.com
4
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM4992SD | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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 |
| LM4992SD/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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 |
| LM4992SDBD | 功能描述:音頻 IC 開發(fā)工具 LM4992SD EVAL BOARD RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| LM4992SDBD/NOPB | 制造商:Texas Instruments 功能描述:Evaluation Board For LM4992, 420Mw Stereo Cell Phone Audio Amplifier |
| LM4992SDX | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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 |
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