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參數(shù)資料
| 型號(hào)： | LM4892M/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 18/22頁(yè) |
| 文件大小： | 1037K |
| 代理商： | LM4892M/NOPB |
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External Components Description (Figure 1) (Continued)
Components
Functional Description
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.
6.
C
OUT
This output coupling capacitor blocks DC voltage while coupling the AC audio signal to the headphone
speaker. Combined with R
L, the headphone impedance, it creates a high pass filter at fc = 1/(2
πR
LCOUT).
Refer to the section, Proper Selection of External Components for an explanation of how to determine the
value of C
OUT.
7.
R
PU
This is the pull up resistor to activate headphone operation when a headphone plug is plugged into the
headphone jack.
8.
R
S
This is the current limiting resistor for the headphone input pin.
9.
R
PD
This is the pull down resistor to de-activate headphone operation when no headphone is plugged into the
headphone jack.
Typical Performance Characteristics
THD+N vs Frequency
at V
DD = 5V, 8
R
L, and PWR = 250mW
THD+N vs Frequency
at V
DD = 3.3V, 8
R
L, and PWR = 150mW
20012737
20012738
THD+N vs Frequency
at V
DD = 2.6V, 8
R
L, and PWR = 100mW
THD+N vs Frequency
at V
DD = 2.6V, 4
R
L, and PWR = 100mW
20012739
20012740
LM4892
www.national.com
5
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| LM4892MX/NOPB | 功能描述:IC AMP AUDIO PWR 1W MONO 8SOIC RoHS:是 類(lèi)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(lèi)型:H 類(lèi) 輸出類(lèi)型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)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(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類(lèi)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) |
| LM4893 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:1.1 Watt Audio Power Amplifier |
| LM4893ITL | 制造商:Texas Instruments 功能描述:AMP POWER AUDIO 1.1W SMD BUMP-9 |
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