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LM4857

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具有 3D 增强功能和 16 种输出模式的 1.2W 立体声模拟输入 AB 类音频放大器

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LM4857

正在供货
数据表 立即订购

产品详情

Rating Catalog Operating temperature range (°C) -40 to 85
Rating Catalog Operating temperature range (°C) -40 to 85
UQFN (NJD) 28 25 mm² 5 x 5
  • Stereo Speaker Amplifier
  • Stereo Headphone Amplifier
  • Mono Earpiece Amplifier
  • Mono Line Output for External Handsfree Carkit
  • Independent Left, Right, and Mono Volume Controls
  • TI 3D Enhancement
  • I2C Compatible Interface
  • Ultra low Shutdown Current
  • Click and Pop Suppression Circuit
  • 16 distinct Output Modes
  • Thermal Shutdown Protection
  • Available in DSBGA and UQFN packages

Key Specifications

  • POUT, Stereo Loudspeakers, 4Ω, 5V, 1% THD+N (LM4857SP) 1.6W (typ)
  • POUT, Stereo Loudspeakers, 8Ω, 5V, 1% THD+N 1.2W (typ)
  • POUT, Stereo Headphones, 32Ω, 5V, 1% THD+N 75mW (typ)
  • POUT, Mono Earpiece, 32Ω, 5V, 1% THD+N 100mW (typ)
  • POUT, Stereo Loudspeakers, 8Ω, 3.3V, 1% THD+N 495mW (typ)
  • POUT, Stereo Headphones, 32Ω, 3.3V, 1% THD+N 33mW (typ)
  • POUT, Mono Earpiece, 32Ω, 3.3V, 1% THD+N 43mW (typ)
  • Shutdown Current 0.06μA (typ)

All trademarks are the property of their respective owners.

  • Stereo Speaker Amplifier
  • Stereo Headphone Amplifier
  • Mono Earpiece Amplifier
  • Mono Line Output for External Handsfree Carkit
  • Independent Left, Right, and Mono Volume Controls
  • TI 3D Enhancement
  • I2C Compatible Interface
  • Ultra low Shutdown Current
  • Click and Pop Suppression Circuit
  • 16 distinct Output Modes
  • Thermal Shutdown Protection
  • Available in DSBGA and UQFN packages

Key Specifications

  • POUT, Stereo Loudspeakers, 4Ω, 5V, 1% THD+N (LM4857SP) 1.6W (typ)
  • POUT, Stereo Loudspeakers, 8Ω, 5V, 1% THD+N 1.2W (typ)
  • POUT, Stereo Headphones, 32Ω, 5V, 1% THD+N 75mW (typ)
  • POUT, Mono Earpiece, 32Ω, 5V, 1% THD+N 100mW (typ)
  • POUT, Stereo Loudspeakers, 8Ω, 3.3V, 1% THD+N 495mW (typ)
  • POUT, Stereo Headphones, 32Ω, 3.3V, 1% THD+N 33mW (typ)
  • POUT, Mono Earpiece, 32Ω, 3.3V, 1% THD+N 43mW (typ)
  • Shutdown Current 0.06μA (typ)

All trademarks are the property of their respective owners.

The LM4857 is an integrated audio sub-system designed for stereo cell phone applications. Operating on a 3.3V supply, it combines a stereo speaker amplifier delivering 495mW per channel into an 8Ω load, a stereo headphone amplifier delivering 33mW per channel into a 32Ω load, a mono earpiece amplifier delivering 43mW into a 32Ω load, and a line output for an external powered handsfree speaker. It integrates the audio amplifiers, volume control, mixer, power management control, and TI 3D enhancement all into a single package. In addition, the LM4857 routes and mixes the stereo and mono inputs into 16 distinct output modes. The LM4857 is controlled through an I2C compatible interface. Other features include an ultra-low current shutdown mode and thermal shutdown protection.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components.

The LM4857 is available in a 30-bump DSBGA package and a 28–lead UQFN package.

The LM4857 is an integrated audio sub-system designed for stereo cell phone applications. Operating on a 3.3V supply, it combines a stereo speaker amplifier delivering 495mW per channel into an 8Ω load, a stereo headphone amplifier delivering 33mW per channel into a 32Ω load, a mono earpiece amplifier delivering 43mW into a 32Ω load, and a line output for an external powered handsfree speaker. It integrates the audio amplifiers, volume control, mixer, power management control, and TI 3D enhancement all into a single package. In addition, the LM4857 routes and mixes the stereo and mono inputs into 16 distinct output modes. The LM4857 is controlled through an I2C compatible interface. Other features include an ultra-low current shutdown mode and thermal shutdown protection.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components.

The LM4857 is available in a 30-bump DSBGA package and a 28–lead UQFN package.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM4857   Stereo 1.2W Audio Sub-system with 3D Enhancement 数据表 (Rev. I) 2013年 4月 19日

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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