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参数资料
| 型号： | LM4838MTE/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| 封装： | TSSOP-28 |
| 文件页数： | 36/38页 |
| 文件大小： | 2351K |
| 代理商： | LM4838MTE/NOPB |
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Electrical Characteristics for Bridged Mode Operation (Notes 7, 10) (Continued)
Note 16: All bumps have the same thermal resistance and contribute equally when used to lower thermal resistance. The LM4838ITL demo board (views featured
in the Application Information section) is a four layer board with two inner layers. The second inner layer is a VDD plane with the bottom outside layer a GND plane.
The planes measure 1,900mils x 1,750mils (48.26mm x 44.45mm) and aid in spreading heat due to power dissipation within the IC.
Note 17: All bumps have the same thermal resistance and contribute equally when used to lower thermal resistance. The LM4838GR Demo Board is a four layer
PC Board with 2 inner layers. The second inner layer and bottom outside layers are both grounded. The planes measure 3200 x 3700 mills and aid in spreading
heat due to power dissipation within the IC.
Typical Application
Truth Table for Logic Inputs (Note 18)
Gain
Sel
Mode
Headphone
Sense
Mute
Shutdown Output Stage Set To
DC Volume
Output Stage
Configuration
0
Internal Gain
Fixed
BTL
0
1
0
Internal Gain
Fixed
SE
0
1
0
Internal Gain
Adjustable
BTL
0
1
0
Internal Gain
Adjustable
SE
1
0
External Gain
Fixed
BTL
1
0
1
0
External Gain
Fixed
SE
1
0
External Gain
Adjustable
BTL
1
0
External Gain
Adjustable
SE
X
1
0
Muted
X
Muted
X
1
Shutdown
X
Note 18: If system beep is detected on the Beep In pin, the system beep will be passed through the bridged amplifier regardless of the logic of the Mute and HP
sense pins.
20013303
FIGURE 2. Typical Application Circuit ( LQ Package Pinout )
LM4838
www.national.com
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相关PDF资料 |
PDF描述 |
|---|---|
| LM4838MT/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| LM4838ITL/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA36 |
| LM4838ITLX/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA36 |
| LM4838LQ/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC28 |
| LM4838LQX/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4838MTEX | 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 |
| LM4838MTEX/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 |
| LM4838MTX | 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 |
| LM4838MTX/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 |
| LM4839 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux |
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