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參數資料
| 型號： | LM4882MMX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.48 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數： | 8/14頁 |
| 文件大小： | 484K |
| 代理商： | LM4882MMX/NOPB |
Electrical Characteristics (Notes 1, 2) (Continued)
The following specifications apply for V
DD = 3V unless otherwise specified. Limits apply for TA = 25C.
Symbol
Parameter
Conditions
LM4882
Units
(Limits)
Typical
(Note 5)
Limit
(Note 6)
THD + N
Total Harmonic Distortion + Noise
R
L =8,P O = 70 mWrms;
0.25
%
R
L =32,PO = 30 mWrms;
0.3
%
f=1kHz
PSRR
Power Supply Rejection Ratio
V
pin3 = 2.5V, V ripple = 200 mVrms,
f = 120 Hz
50
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 func-
tional, but do not guarantee specific performance limits.
Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee 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 P DMAX =(TJMAX TA)/θJA. For the LM4882, TJMAX = 150C, and the typical junction-to-ambient thermal resistance, when board
mounted, is 210C/W for the MUA08A Package and 170C/W for the M08A Package.
Note 4: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 5: Typicals are measured at 25C and represent the parametric norm.
Note 6: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
External Components Description
(Refer to
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/(2πRiCi).
2. C
i
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
i at fc =1/(2πRiC i). Refer to the section, Proper Selection of External Components,
for an explanation of how to determine the values of C
i.
3. R
f
Feedback resistance which sets closed-loop gain in conjunction with R
i.
4. C
S
Supply bypass capacitor which provides power supply filtering. Refer to the Application Information section
for 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.
6. C
O
Output coupling capacitor which blocks the DC voltage at the amplifier’s output. Forms a high pass filter wth
R
L at fO =1/(2πRLC O).
Typical Performance Characteristics
THD+N vs Frequency
DS100030-26
THD+N vs Frequency
DS100030-9
THD+N vs Frequency
DS100030-10
LM4882
www.national.com
3
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4882MX/NOPB | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 0.48W Class-AB 8-Pin SOIC N T/R |
| LM4883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone |
| LM4883A E WAF | 制造商:Texas Instruments 功能描述: |
| LM4883SQ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone |
| LM4883SQ/NOPB | 功能描述:IC AMP AUDIO PWR 3W STER 24LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機，2-通道（立體聲） 在某負載時最大輸出功率 x 通道數量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
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