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参数资料
| 型号： | LM4919MM/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.014 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封装： | MSOP-10 |
| 文件页数： | 1/15页 |
| 文件大小： | 568K |
| 代理商： | LM4919MM/NOPB |
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%)
85mW (typ)
n
Stereo Headphone output power
n
(R
L =16
,V
DD = 1.5V, THD+N = 1%)
14mW (typ)
n
Micropower shutdown current
0.02A (typ)
n
Supply voltage operating range
0.9V < V
DD < 2.5V
n
PSRR 1kHz, V
DD = 1.5V, RL =16
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
LM4919
1.5V
,
Mono
85mW
BTL
Output,
14mW
Stereo
Headphone
Audio
Amplifier
2004 National Semiconductor Corporation
DS200821
www.national.com
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相关代理商/技术参数 |
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| LM491-S | 功能描述:基本/快动开关 Foot Switch RoHS:否 制造商:Omron Electronics 触点形式:SPDT 执行器:Lever 电流额定值:5 A 电压额定值 AC:250 V 电压额定值 DC:30 V 功率额定值: 工作力:120 g IP 等级:IP 67 NEMA 额定值: 端接类型:Wire 安装:Panel |
| LM491-SC3 | 功能描述:基本/快动开关 Foot Switch RoHS:否 制造商:Omron Electronics 触点形式:SPDT 执行器:Lever 电流额定值:5 A 电压额定值 AC:250 V 电压额定值 DC:30 V 功率额定值: 工作力:120 g IP 等级:IP 67 NEMA 额定值: 端接类型:Wire 安装:Panel |
| LM491-SC36 | 功能描述:基本/快动开关 Foot Switch RoHS:否 制造商:Omron Electronics 触点形式:SPDT 执行器:Lever 电流额定值:5 A 电压额定值 AC:250 V 电压额定值 DC:30 V 功率额定值: 工作力:120 g IP 等级:IP 67 NEMA 额定值: 端接类型:Wire 安装:Panel |
| LM491-SC36MP | 功能描述:基本/快动开关 Gear Selector RoHS:否 制造商:Omron Electronics 触点形式:SPDT 执行器:Lever 电流额定值:5 A 电压额定值 AC:250 V 电压额定值 DC:30 V 功率额定值: 工作力:120 g IP 等级:IP 67 NEMA 额定值: 端接类型:Wire 安装:Panel |
| LM4920 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Ground-Referenced, Ultra Low Noise, Fixed Gain, 80mW Stereo Headphone Amplifier |
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