- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30753 > LM4840MT/NOPB (NATIONAL SEMICONDUCTOR CORP) 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 PDF資料下載
參數(shù)資料
| 型號(hào)： | LM4840MT/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| 封裝： | TSSOP-28 |
| 文件頁數(shù)： | 6/22頁 |
| 文件大?。?/td> | 829K |
| 代理商： | LM4840MT/NOPB |
Application Information (Continued)
Table 1: Logic Level Truth Table
SD
BEEP
DETECT
MUTE
HP
SENSE
MODE
R-
R+
L-
L+
L
BTL SPK
ON
L
H
HP
ON
ON (buffer)
ON
OFF
L
H
L
BTLSPK
ON
*Amps are muted
L
H
HP
ON
ON (buffer)
ON
OFF
*Amps are muted
*Next four conditions, beep is detected; beep signal added to audio signal and bypasses volume control (unity)
L
H
L
BTL SPK
ON
L
H
L
H
HP
ON
ON (buffer)
ON
L
H
L
BTL SPK
ON
*Dual Mode
L
H
HP
ON
ON (buffer)
ON
*Dual Mode
*Next eight conditions turns off all amps
H
L
BTL SPK
OFF
H
L
H
HP
OFF
H
L
H
L
BTL SPK
OFF
H
L
H
HP
OFF
H
L
BTL SPK
OFF
H
L
H
HP
OFF
H
L
BTL SPK
OFF
H
HP
OFF
*Beepdetect signal overrides any mute. For example, if amp is muted and bpdetect is HIGH, then amp is no longer muted.
**Dual mode: When HP jack is inserted, load A (speaker corresponding to outputs A- and A+) is physically disconnected. Load
B remains connected; however, amp B+ is off and differentially there is no voltage across it. If a beep is detected (i.e. beepdetect
= HIGH), then summed signal (audio + beep signals) is heard in the headphones and on speaker B.
LM4840
www.national.com
14
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4840MHX/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4840MH/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4841MH/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4841MHX/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4841MT/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4841 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 2W Amplifiers with DC Volume Control, Transient Free Outputs, and Cap-less Headphone Drive |
| LM48410 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low EMI, Filterless, 2.3W Stereo Class D Audio Power Amplifier with National 3D Enhancement |
| LM48410SQ | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 2-CH Stereo 2.3W Class-D 24-Pin LLP EP T/R 制造商:Texas Instruments 功能描述:AMP, POWER, CLASS D, 2.3W, LLP-24 |
| LM48410SQ/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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM48410SQBD | 功能描述:音頻 IC 開發(fā)工具 LM48410 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。