LM4809

ACTIVO

Amplificador de auriculares estéreo de entrada analógica y 105 mW con modo de apagado activo-bajo

Detalles del producto

Output power (W) 0.105 Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 Load (min) (Ω) 16 PSRR (dB) 70 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 0.4 Architecture Class-AB Iq per channel (typ) (mA) 0.7
Output power (W) 0.105 Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 Load (min) (Ω) 16 PSRR (dB) 70 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 0.4 Architecture Class-AB Iq per channel (typ) (mA) 0.7
VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGL) 8 6.25 mm² 2.5 x 2.5
  • Active-Low Shutdown Mode
  • "Click and Pop" Reduction Circuitry
  • Low Shutdown Current
  • WSON, MSOP, and SOIC Surface Mount Packaging
  • No Bootstrap Capacitors Required
  • Unity-Gain Stable

Key Specifications

  • THD+N at 1kHz at 105mW Continuous Average Power into 16Ω 0.1% (typ)
  • THD+N at 1kHz at 70mW Continuous Average Power into 32Ω 0.1% (typ)
  • Shutdown Current 0.4µA (typ)

All trademarks are the property of their respective owners.

  • Active-Low Shutdown Mode
  • "Click and Pop" Reduction Circuitry
  • Low Shutdown Current
  • WSON, MSOP, and SOIC Surface Mount Packaging
  • No Bootstrap Capacitors Required
  • Unity-Gain Stable

Key Specifications

  • THD+N at 1kHz at 105mW Continuous Average Power into 16Ω 0.1% (typ)
  • THD+N at 1kHz at 70mW Continuous Average Power into 32Ω 0.1% (typ)
  • Shutdown Current 0.4µA (typ)

All trademarks are the property of their respective owners.

The LM4809 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω 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. Since the LM4809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.

The unity-gain stable LM4809 can be configured by external gain-setting resistors.

The LM4809 features an externally controlled, active-low, micropower consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

The LM4809 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω 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. Since the LM4809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.

The unity-gain stable LM4809 can be configured by external gain-setting resistors.

The LM4809 features an externally controlled, active-low, micropower consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode datasheet (Rev. F) 05 abr 2013
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 ago 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27 jun 2019

Diseño y desarrollo

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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VSSOP (DGK) 8 Ultra Librarian
WSON (NGL) 8 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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