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参数资料
| 型号： | LM4865MDC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频控制 |
| 英文描述： | 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, UUC |
| 封装： | DIE |
| 文件页数： | 1/18页 |
| 文件大小： | 520K |
| 代理商： | LM4865MDC |
LM4865
750 mW Audio Power Amplifier with DC Volume Control
and Headphone Switch
General Description
The LM4865 is a mono bridged audio power amplifier with
DC voltage volume control. The LM4865 is capable of deliv-
ering 750mW of continuous average power into an 8
load
with less than 1% THD when powered by a 5V power supply.
Switching between bridged speaker mode and headphone
(single ended) mode is accomplished using the headphone
sense pin. To conserve power in portable applications, the
LM4865’s micropower shutdown mode (I
Q = 0.7A, typ) is
activated when less than 300mV is applied to the DC Vol/SD
pin.
Boomer audio power amplifiers are designed specifically to
provide high power audio output while maintaining high fidel-
ity. They require few external components and operate on
low supply voltages.
Applications
n
GSM phones and accessories, DECT, office phones
n
Hand held radio
n
Other portable audio devices
Key Specifications
j PO at 1.0% THD+N into 8
SO, micro SMD
750mW (typ)
j PO at 10% THD+N into 8
SO, micro SMD
1W (typ)
j Shutdown current
0.7A(typ)
j Supply voltage range
2.7V to 5.5V
Features
n
DC voltage volume control
n
Headphone amplifier mode
n
“Click and pop” suppression
n
Shutdown control when volume control pin is low
n
Thermal shutdown protection
Typical Application
Connection Diagram
BOOMER is a trademark of National Semiconductor Corporation.
DS101025-1
FIGURE 1. Typical Audio Amplifier
Application Circuit
(Numbers in ( ) are specific to the micro SMD package)
micro SMD Package
DS101025-36
Top View
Order Number LM4865IBP
See NS Package Number BPA08CFB
Small Outline Package (SO)
Mini Small Outline Package (MSOP)
DS101025-2
Top View
Order Number LM4865M, LM4865MM
See NS Package Number M08A, MUA08A
October 2000
LM4865
750
mW
Audio
Power
Amplifier
with
DC
V
olume
Control
and
Headphone
Switch
2000 National Semiconductor Corporation
DS101025
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4865MM | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4865MM/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4865MMX | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4865MMX/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4865MX | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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