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參數(shù)資料
| 型號： | LM4872IBPX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| 封裝： | MICRO, SMD-8 |
| 文件頁數(shù)： | 10/15頁 |
| 文件大?。?/td> | 465K |
| 代理商： | LM4872IBPX/NOPB |
Electrical Characteristics V
The following specifications apply for V
DD = 2.6V and 8
Load unless otherwise specified. Limits apply for T
A =
25C. (Continued)
Symbol
Parameter
Conditions
LM4872
Units
(Limits)
Typical
Limit
V
OS
Output Offset Voltage
V
IN = 0V
5
mV (max)
P
0
Output Power ( 8
)
Output Power ( 4
)
THD = 0.3% (max);f=1kHz THD
= 0.5% (max);f=1kHz
0.25
0.5
W
THD+N
Total Harmonic Distortion+Noise
P
o = 0.25 Wrms; AVD =2;20Hz
≤
f
≤ 20 kHz
0.25
%
PSRR
Power Supply Rejection Ratio
V
DD = 2.5V to 2.7V
65
dB
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 Absolute Maximum Ratings, whichever is lower. For the LM4872, TJMAX = 150C.
The typical junction-to-ambient thermal resistance is 150C/W.
Note 4: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 5: Machine Model, 220 pF–240 pF 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: Low Voltage Circuit - See Fig. 4
Note 9: Shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase ISD by a maximum of 2A.
External Components Description
(Figure 1)
Components
Functional Description
1.
R
i
Inverting input resistance which sets the closed-loop gain in conjunction with R
f. This resistor also forms a
high pass filter with C
i at fC= 1/(2
π R
iCi).
2.
C
i
Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a
highpass filter with R
i at fc = 1/(2
π R
iCi). Refer to the section, Proper Selection of External Components,
for an explanation of how to determine the value of C
i.
3.
R
f
Feedback resistance which sets the closed-loop gain in conjunction with R
i.
4.
C
S
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
5.
C
B
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of External
Components, for information concerning proper placement and selection of C
B.
LM4872
www.national.com
4
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| LM4872ITP | 制造商:Texas Instruments 功能描述:AMP AUDIO 1W BOOMER SMD 4872 |
| LM4872ITP/NOPB | 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4872ITPX/NOPB | 制造商:Texas Instruments 功能描述: |
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| LM4873_02 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
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