主页 音频、触觉与压电 音频放大器 通用音频放大器
主页
音频、触觉与压电
音频放大器
通用音频放大器

LM4990

正在供货

2W 单声道、模拟输入 AB 类音频放大器

立即订购
数据表

LM4990

正在供货
数据表 立即订购

产品详情

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Control interface Hardware Output power (W) 2 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.2 THD + N at 1 kHz (%) 0.2 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.2 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Control interface Hardware Output power (W) 2 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.2 THD + N at 1 kHz (%) 0.2 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.2 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YZR) 9 3.0625 mm² (— mm × — mm) VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) HVSSOP (DGQ) 10 14.7 mm² (3 mm × 4.9 mm)
  • Available in Space-Saving Packages: WSON, Exposed-DAP MSOP-PowerPAD, VSSOP, and DSBGA
  • Ultra Low Current Shutdown Mode
  • Improved Click and Pop Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
  • 2.2 - 5.5V Operation
  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Unity-Gain Stable
  • External Gain Configuration Capability
  • User Selectable Shutdown High or Low Logic Level

Key Specifications

  • Improved PSRR at 217Hz & 1KHz: 62dB
  • Power Output at 5.0V, 1% THD+N,
    • 4Ω (NGZ and DGQ only): 2W (Typ)
  • Power Output at 5.0V, 1% THD+N, 8Ω: 1.25W (Typ)
  • Power Output at 3.0V, 1% THD+N, 4Ω: 600mW (Typ)
  • Power Output at 3.0V, 1% THD+N, 8Ω: 425mW (Typ)
  • Shutdown Current: 0.1µA (Typ)

All trademarks are the property of their respective owners.

  • Available in Space-Saving Packages: WSON, Exposed-DAP MSOP-PowerPAD, VSSOP, and DSBGA
  • Ultra Low Current Shutdown Mode
  • Improved Click and Pop Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
  • 2.2 - 5.5V Operation
  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Unity-Gain Stable
  • External Gain Configuration Capability
  • User Selectable Shutdown High or Low Logic Level

Key Specifications

  • Improved PSRR at 217Hz & 1KHz: 62dB
  • Power Output at 5.0V, 1% THD+N,
    • 4Ω (NGZ and DGQ only): 2W (Typ)
  • Power Output at 5.0V, 1% THD+N, 8Ω: 1.25W (Typ)
  • Power Output at 3.0V, 1% THD+N, 4Ω: 600mW (Typ)
  • Power Output at 3.0V, 1% THD+N, 8Ω: 425mW (Typ)
  • Shutdown Current: 0.1µA (Typ)

All trademarks are the property of their respective owners.

The LM4990 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.25 watts of continuous average power to an 8Ω BTL load and 2 watts of continuous average power (NGZ and DGQ only) to a 4Ω BTL load with less than 1% distortion (THD+N+N) from a 5VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4990 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM4990 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by either logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the shutdown pin to be driven in a likewise manner to enable shutdown.

The LM4990 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions.

The LM4990 is unity-gain stable and can be configured by external gain-setting resistors.

The LM4990 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.25 watts of continuous average power to an 8Ω BTL load and 2 watts of continuous average power (NGZ and DGQ only) to a 4Ω BTL load with less than 1% distortion (THD+N+N) from a 5VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4990 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM4990 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by either logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the shutdown pin to be driven in a likewise manner to enable shutdown.

The LM4990 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions.

The LM4990 is unity-gain stable and can be configured by external gain-setting resistors.

filter 查找其他 通用音频放大器
下载 观看带字幕的视频 视频

技术文档

未找到结果。请清除搜索并重试。
查看全部 1
顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LM4990  2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level 数据表 (Rev. E) 2013-5-2

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

封装 引脚 CAD 符号、封装和 3D 模型
DSBGA (YZR) 9 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
HVSSOP (DGQ) 10 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

可获得 TI 工程师技术支持的 TI E2E™ 论坛

查看全部论坛主题 查看英文版全部论坛主题

所有内容均由 TI 和社区贡献者按“原样”提供，并不构成 TI 规范。请参阅使用条款。

如果您对质量、包装或订购 TI 产品有疑问，请参阅 TI 支持。​​​​​​​​​​​​​​

视频