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參數(shù)資料
| 型號： | LM4875 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch |
| 中文描述： | 750毫瓦音頻功率放大器直流音量控制和耳機開關(guān) |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 673K |
| 代理商： | LM4875 |
LM4875
750 mW Audio Power Amplifier with DC Volume Control
and Headphone Switch
General Description
The LM4875 is a mono bridged audio power amplifier with
DC voltage volume control. The LM4875 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
LM4875’s micropower shutdown mode (I
= 0.7μA, 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
P
O
at 1.0% THD+N into 8
j
P
O
at 10% THD+N into 8
j
Shutdown current
j
Supply voltage range
750mW (typ)
1W (typ)
0.7μA(typ)
2.7V to 5.5V
Features
n
Precision 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
Small Outline Package (SO)
Mini Small Outline Package (MSOP)
10104202
Top View
Order Number LM4875M, LM4875MM
See NS Package Number M08A, MUA08A
BOOMER
is a trademark of National Semiconductor Corporation.
10104201
FIGURE 1. Typical Audio Amplifier
Application Circuit
January 2002
L
2004 National Semiconductor Corporation
DS101042
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4875M | 750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch |
| LM4875MM | 750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch |
| LM4877IBP | Pressure Transducer, Series 19 mm, Compensated, Pressure Range: 0 psi to 3 psi, Gage, 1/4 BSPP, 10 Vdc excitation |
| LM4877IBPX | Pressure Transducer, Series 19 mm, Compensated, Pressure Range: 0 psi to 5 psi, Gage, Cell with body o-ring, 10 Vdc excitation |
| LM4877 | 1 Watt Audio Power Amplifier in micro SMD package with Shutdown Logic Low |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4875M | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4875M/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4875MM | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4875MM/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4875MX | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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