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參數(shù)資料
| 型號(hào)： | LM4919 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 音頻放大器 |
| 英文描述： | 1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone Audio Amplifier |
| 中文描述： | 1.5V的，單聲道85mW BTL輸出，消耗14mW功率立體聲耳機(jī)音頻放大器 |
| 文件頁(yè)數(shù)： | 1/15頁(yè) |
| 文件大?。?/td> | 568K |
| 代理商： | LM4919 |
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LM4919
1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone
Audio Amplifier
General Description
The unity gain stable LM4919 is both a mono-BTL audio
power amplifier and a Single Ended (SE) stereo headphone
amplifier. Operating on a single 1.5V supply, the mono BTL
mode delivers 85mW into an 8
load at 1% THD+N. In
Single Ended stereo headphone mode, the amplifier delivers
14mW per channel into a 16
load at 1% THD+N.
With the LM4919 packaged in the MM package, the cus-
tomer benefits include low profile and small size. This pack-
age minimizes PCB area and maximizes output power.
The LM4919 features circuitry that reduces output transients
("clicks" and "pops") during device turn-on and turn-off, an
externally controlled, low-power consumption, active-low
shutdown mode, and thermal shutdown. Boomer audio
power amplifiers are designed specifically to use few exter-
nal components and provide high quality output power in a
surface mount package.
Key Specifications
n
Mono-BTL output power
n
(R
L
= 8
, V
DD
= 1.5V, THD+N = 1%)
n
Stereo Headphone output power
n
(R
L
= 16
, V
DD
= 1.5V, THD+N = 1%)
n
Micropower shutdown current
n
Supply voltage operating range
n
PSRR 1kHz, V
DD
= 1.5V, R
L
= 16
85mW (typ)
14mW (typ)
0.02μA (typ)
0.9V
<
V
DD
<
2.5V
72dB (typ)
Features
n
Single-cell 0.9V to 2.5V battery operation
n
BTL mode for mono speaker
n
Single ended headphone operation with coupling
capacitors
n
Unity-gain stable
n
"Click and pop" suppression circuitry
n
Active low micropower shutdown
n
Low current, active-low mute mode
n
Thermal shutdown protection circuitry
Applications
n
Portable one-cell audio products
n
Portable one-cell electronic devices
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
20082101
FIGURE 1. Block Diagram
May 2004
L
2004 National Semiconductor Corporation
DS200821
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4919MM | 1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone Audio Amplifier |
| LM4921 | Low Voltage I2S 16-Bit Stereo DAC with Stereo Headphone Power Amplifiers and Volume Control |
| LM4923 | 1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
| LM4923LQ | 1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
| LM4925 | Single Audio Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4919A WAF | 制造商:Texas Instruments 功能描述: |
| LM4919MM | 制造商:Texas Instruments 功能描述:AMP STEREO H/P 1.5V 14MW SMD 4919 |
| LM4919MM/NOPB | 功能描述:IC AMP AUDIO MONO/STER AB 10MSOP 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(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) |
| LM4919MMBD | 功能描述:BOARDS EVALUATION LM4919MM RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 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:1 系列:- |
| LM491-S | 功能描述:基本/快動(dòng)開關(guān) Foot Switch RoHS:否 制造商:Omron Electronics 觸點(diǎn)形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級(jí):IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
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