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  • 参考价格:¥14.97-¥8.69

更新日期:2024-04-01 00:04:00

产品简介:具有 DC 音量控制和可选增益的立体声 2W 音频功率放大器

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  • 参考价格:¥14.97-¥8.69

LM4938MH/NOPB 供应商

  • 公司
  • 型号
  • 品牌
  • 封装/批号
  • 数量
  • 地区
  • 日期
  • 说明
  • 询价

LM4938MH/NOPB 中文资料属性参数

  • 制造商:National Semiconductor (TI)
  • 产品:Class-AB
  • 输出功率:2.2 W x 2 at 3 Ohms, 0.092 W x 2 at 32 Ohms
  • 输出类型:2-Channel Stereo
  • THD + 噪声:0.05 %
  • 工作电源电压:3 V, 5 V
  • 最大工作温度:+ 85 C
  • 安装风格:SMD/SMT
  • 封装 / 箱体:TSSOP EP
  • 音频负载电阻:32 Ohms
  • 输入信号类型:Single
  • 最小工作温度:- 20 C
  • 输出信号类型:Differential, Single
  • 工厂包装数量:48
  • 电源类型:Single
  • Supply Voltage - Max:5.5 V
  • Supply Voltage - Min:2.7 V

产品特性

  • Improved Click and Pop Circuitry Virtually Eliminates Noise During Turn On/Off Transitions
  • DC Volume Control Interface
  • System Beep Detect
  • Stereo Switchable Bridged/Single-Ended Power Amplifiers
  • Selectable Internal/External Gain and Bass Boost
  • Thermal Shutdown Protection Circuitry
  • Unity Gain Stable
  • PO at 1% THD+Ninto 3Ω: 2.2W (typ)into 4Ω: 2.0W (typ)into 8Ω: 1.3W (typ)
  • into 3Ω: 2.2W (typ)
  • into 4Ω: 2.0W (typ)
  • into 8Ω: 1.3W (typ)
  • Single-ended modeTHD+N at 92mW into 32Ω: 1.0% (typ)
  • THD+N at 92mW into 32Ω: 1.0% (typ)
  • Shutdown Current: 0.5µA (typ)

产品概述

The LM4938 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4Ω with less than 1.0% THD or 2.2W into 3Ω with less than 1.0% THD. Boomer audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4938 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.The LM4938 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.Note 1: When properly mounted to the circuit board, LM4938MH will deliver 2W into 4Ω. See Application Information section for more information.Note 2: An LM4938MH that has been properly mounted to the circuit board and forced-air cooled will deliver 2.2W into 3Ω.

LM4938MH/NOPB 数据手册

数据手册 说明 数量 操作
LM4938MH/NOPB

Amplifier IC 2-Channel (Stereo) with Stereo Headphones Class AB 28-HTSSOP

34页,8.99M 查看

LM4938MH/NOPB 电路图

LM4938MH/NOPB 电路图

LM4938MH/NOPB 电路图

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