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參數(shù)資料
| 型號(hào)： | LM4840LQX/NOPB |
| 廠(chǎng)商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC28 |
| 封裝： | LLP-28 |
| 文件頁(yè)數(shù)： | 14/22頁(yè) |
| 文件大?。?/td> | 829K |
| 代理商： | LM4840LQX/NOPB |
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National P/N LM4840 - Stereo 2W Audio Power Amplifiers with Digital Volume Control and Input Mux
The LM4840 is a monolithic integrated circuit that provides digital volume control and stereo bridged audio
power amplifiers capable of producing 2W into 4
with less than 1.0% THD or 2.2W into 3
with less than
1.0% THD.
Boomer audio integrated circuits were designed specifically to provide high quality audio while requiring a
minimum amount of external components. The LM4840 incorporates a digital volume control, stereo bridged
audio power amplifiers, an input mux, and a last volume level memory function to save the volume setting
during shutdown. These features make it optimally suited for multimedia monitors, portable radios, desktop,
and portable computer applications.
The LM4840 features an externally controlled, low-power consumption shutdown mode, and both a power
amplifier and headphone mute for maximum system flexibility and performance.
Features
q
PC98 and PC99 Compliant
q
Digital Volume Control Interface
q
System Beep Detect
q
Stereo switchable bridged/single-ended power amplifiers
q
"Click and pop" suppression circuitry
q
Thermal shutdown protection circuitry
q
Input Mux
q
Capless headphone drivers
q
Last volume memory from shutdown
Key Specification
PO at 1% THD+N
into 3
(LM4840LQ, LM4840MH) 2.2W (typ)
into 4
(LM4840LQ, LM4840MH) 2.0W (typ)
into 8
(LM4840) 1.1W (typ)
Single-ended mode - THD+N at 85mW into 32
1.0% (typ)
Shutdown current 0.2A (typ)
Applications
q
Portable and Desktop Computers
q
Multimedia Monitors
q
Portable Radios, PDAs, and Portable TVs
[Information as of 5-Aug-2002]
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4840LQ/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC28 |
| LM4840MTX/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4840MT/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4840MHX/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4840MH/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4840MH | 制造商:Texas Instruments 功能描述:AMP AUDIO STEREO 2W SMD TSSOP28 |
| LM4840MH/NOPB | 功能描述:IC AMP AUDIO PWR 2.2W AB 28TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 線(xiàn)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) |
| LM4840MT | 制造商:Texas Instruments 功能描述:AMP AUDIO STEREO 2W SMD TSSOP28 |
| LM4840MT/NOPB | 功能描述:IC AMP AUDIO PWR 2.2W AB 28TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 線(xiàn)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) |
| LM4841 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Stereo 2W Amplifiers with DC Volume Control, Transient Free Outputs, and Cap-less Headphone Drive |
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