- 您現在的位置：買賣IC網 > PDF目錄30753 > LM4854MTX/NOPB (NATIONAL SEMICONDUCTOR CORP) 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 PDF資料下載
參數資料
| 型號： | LM4854MTX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| 封裝： | TSSOP-14 |
| 文件頁數： | 1/29頁 |
| 文件大?。?/td> | 1440K |
| 代理商： | LM4854MTX/NOPB |
當前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
LM4854
1.9W Monaural, 85mW Stereo Headphone Audio
Amplifier
General Description
The unity-gain stable LM4854 is both a mono differential
output (for bridge-tied loads, or BTL) audio power amplifier
and a single-ended (SE) stereo headphone amplifier. Oper-
ating on a single 5V supply, the mono BTL mode delivers
1.1W (typ) to an 8
load, 1.7W (typ) to a 4 load (Note 1) at
1% THD+N. In SE stereo mode, the amplifier will deliver
85mW to 32
loads. The LM4854 features a new circuit
topology that suppresses output transients (’click and pops’)
and eliminates SE-mode output coupling capacitors, saving
both component and board space costs. The LM4854 has
three inputs: one pair for a two-channel stereo signal and the
third for a single-channel mono input.
The LM4854 is designed for PDA, cellular telephone, note-
book, and other handheld portable applications. It delivers
high quality output power from a surface-mount package and
requires few external components. Other features include an
active-low micropower shutdown mode, an "instant-on" low
power standby mode, and thermal shutdown protection.
The LM4854 is available in the very space-efficient 12-lead
micro SMD, exposed-DAP LLP for higher power applica-
tions, and TSSOP packages.
Note 1: An LM4854LD that has been properly mounted to a circuit board will
deliver 1.7W (typ) into a 4
load.
Key Specifications
j LLP BTL output power (RL = 3.2
and
THD+N = 1%)
V
DD = 3.0V
1.0W (typ)
V
DD = 5.0V
1.9W (typ)
j LLP BTL output power (RL =4
and
THD+N = 1%)
V
DD = 3.0V
900mW (typ)
V
DD = 5.0V
1.7W (typ)
j LLP BTL output power (RL =8
and
THD+N = 1%)
V
DD = 3.0V
380mW (typ)
V
DD = 5.0V
1.1W (typ)
j SE output power (RL =32
and THD+N
= 1.0%)
V
DD = 3.0V
32mW (typ)
V
DD = 5.0V
93mW (typ)
j Micropower shutdown supply current
V
DD = 3.0V
0.005A (typ)
V
DD = 5.0V
0.05A (typ)
j Standby supply current
V
DD = 3.0V
16A (typ)
V
DD = 5.0V
27A (typ)
j PSRR (f = 1kHz, 3.0V
≤ V
DD
≤ 5.0V,
(Fig. 1))
BTL
60dB (typ)
SE
66dB (typ)
Features
n
Fast 0.1ms (typ) and 1.0ms (max) turn-on and turn-off
time
n
Eliminates SE amplifier output coupling capacitors
n
Advanced "click and pop" suppression circuitry
n
Stereo headphone amplifier mode
n
Low-power standby and ultra-low current micropower
shutdown modes
n
Thermal shutdown protection circuitry
n
2.4V to 5.5V operation
n
Unity-gain stable
n
Gain set with external resistors
n
Space-saving micro SMD package, exposed-DAP LLP,
and TSSOP
Applications
n
PDAs
n
Notebook computers
n
Cellular phones
n
Handheld portable electronic devices
Boomer is a registered trademark of National Semiconductor Corporation.
April 2003
LM4854
1.9W
Monaural,
85mW
Stereo
Headphone
Audio
Amplifier
2003 National Semiconductor Corporation
DS200382
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4854LD/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| LM4854LDX/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| LM4856LQ/NOPB | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| LM4856ITL/NOPB | 1.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| LM4857GR/NOPB | SPECIALTY CONSUMER CIRCUIT, PBGA49 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4855 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Boomer AUDIO POWER AMPLIFIER Integrated Audio Amplifier System |
| LM48555 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ceramic Speaker Driver |
| LM48555TL | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono Class-AB 12-Pin uSMD T/R 制造商:Texas Instruments 功能描述:IC AMP POWER AUDIO SMD |
| LM48555TL/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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 |
| LM48555TLBD | 功能描述:音頻 IC 開發工具 LM48555TL EVAL BOARD RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
發布緊急采購，3分鐘左右您將得到回復。