LM4881:具有停机模式的 Boomer 双路 200 mW 耳机放大器

The LM4881 is a dual audio power amplifier capable of delivering 200mW of continuous average power into an 8Ω load with 0.1% THD+N from a 5V power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components using surface mount packaging. Since the LM4881 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.

The LM4881 features an externally controlled, low power consumption shutdown mode which is virtually clickless and popless, as well as an internal thermal shutdown protection mechanism.

The unity-gain stable LM4881 can be configured by external gain-setting resistors.

  • VSSOP Surface Mount Packaging
  • Unity-gain Stable
  • External Gain Configuration Capability
  • Thermal Shutdown Protection Circuitry
  • No Bootstrap Capacitors, or Snubber Circuits are Necessary
Key Specifications
  • THD+N at 1kHz at 125mW Continuous Average Output Power into 8Ω 0.1% (max)
  • THD+N at 1kHz at 75mW Continuous
    0.02% (typ)
  • Output Power at 10% THD+N at 1kHz into 8Ω 300 mW (typ)
  • Shutdown Current 0.7µA (typ)
  • Supply Voltage Range 2.7V to 5.5 V
Output Power (W)0.15
PSRR (dB)50
Operating Temperature Range (C)-40 to 85
Approx. Price (US$)0.50 | 1ku
Headphone ChannelsStereo
Shutdown Current (ISD) (uA)0.7
数据表 (1)
标题类型大小 (KB)日期
LM4881 Dual 200 mW Headphone Amplifier with Shutdown ModePDF4942013年 5月 2日
应用手册 (2)
标题类型大小 (KB)日期
AN-1849 An Audio Amplifier Power Supply DesignPDF18582013年 5月 1日
Guidelines for Measuring Audio Power Amplifier PerformancePDF7652001年 10月 30日
型号试生产 / 生产材料状态温度(oC)价格(美元) | Quantity封装 | 引脚器件标记封装数量 | 载体
LM4881M/NOPB生产ACTIVE-40 to 850.60 | 1kuSOIC (D)LM48 81M95 | TUBE
LM4881MM/NOPB生产ACTIVE-40 to 850.50 | 1kuVSSOP (DGK)Z811000 | LARGE T&R
LM4881MX/NOPB生产ACTIVE-40 to 850.50 | 1kuSOIC (D)LM48 81M2500 | LARGE T&R
LM4881 Dual 200 mW Headphone Amplifier with Shutdown Mode LM4881
AN-1849 An Audio Amplifier Power Supply Design TLV320DAC3100-Q1
Guidelines for Measuring Audio Power Amplifier Performance TLV320DAC3100-Q1