Inicio Audio, háptica y piezoeléctrica Amplificadores de audio Amplificadores de audio de uso general
Inicio
Audio, háptica y piezoeléctrica
Amplificadores de audio
Amplificadores de audio de uso general

LM48312

ACTIVO

Amplificador de audio mono de Clase D, entrada analógica y 2.6 W con ganancia seleccionable y supres

Haga su pedido ahora
Hoja de datos

LM48312

ACTIVO
Hoja de datos Haga su pedido ahora

Detalles del producto

Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Control interface Hardware Output power (W) 2.6 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.03 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.5 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Control interface Hardware Output power (W) 2.6 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.03 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.5 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YZR) 9 3.0625 mm² (— mm × — mm)
  • Passes FCC Class B Radiated Emissions with 20 Inches of Cable
  • E2S System Reduces EMI While Preserving Audio Quality and Efficiency
  • Output Short Circuit Protection with Auto-Recovery
  • No Output Filter Required
  • Improved Audio Quality
  • Minimum External Components
  • Five Logic Selectable Gain Settings (0, 3, 6, 9, 12dB)
  • Low Power Shutdown Mode
  • Click and Pop Suppression
  • Available in Space-Saving DSBGA Package

Key Specifications

  • Efficiency at 3.6V, 400mW into 8Ω, 84% (Typ)
  • Efficiency at 5V, 1W into 8Ω, 88% (Typ)
  • Quiescent Power Supply Current at 5V, 3.1mA
  • Power Output at VDD = 5V, RL = 4Ω
    • THD+N ≤ 10%, 2.6W (Typ)
    • THD+N ≤ 1%, 2.1W (Typ)
  • Power Output at VDD = 5V, RL = 8Ω
    • THD+N ≤ 10%, 1.6W (Typ)
    • THD+N ≤ 1%, 1.3W (Typ)
  • Shutdown Current, 0.01μA (Typ)

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

  • Passes FCC Class B Radiated Emissions with 20 Inches of Cable
  • E2S System Reduces EMI While Preserving Audio Quality and Efficiency
  • Output Short Circuit Protection with Auto-Recovery
  • No Output Filter Required
  • Improved Audio Quality
  • Minimum External Components
  • Five Logic Selectable Gain Settings (0, 3, 6, 9, 12dB)
  • Low Power Shutdown Mode
  • Click and Pop Suppression
  • Available in Space-Saving DSBGA Package

Key Specifications

  • Efficiency at 3.6V, 400mW into 8Ω, 84% (Typ)
  • Efficiency at 5V, 1W into 8Ω, 88% (Typ)
  • Quiescent Power Supply Current at 5V, 3.1mA
  • Power Output at VDD = 5V, RL = 4Ω
    • THD+N ≤ 10%, 2.6W (Typ)
    • THD+N ≤ 1%, 2.1W (Typ)
  • Power Output at VDD = 5V, RL = 8Ω
    • THD+N ≤ 10%, 1.6W (Typ)
    • THD+N ≤ 1%, 1.3W (Typ)
  • Shutdown Current, 0.01μA (Typ)

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

The LM48312 is a single supply, high efficiency, mono, 2.6W, filterless switching audio amplifier. The LM48312 features TI’s Enhanced Emissions Suppression (E2S) system, that features a unique patented ultra low EMI, spread spectrum, PWM architecture, that significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system improves battery life, reduces external component count, board area consumption, and system cost, simplifying design.

The LM48312 is designed to meet the demands of portable multimedia devices. Operating from a single 5V supply, the device is capable of delivering 2.6W of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM48312 features both a spread spectrum modulation scheme, and an advanced, patented edge rate control (ERC) architecture that significantly reduces emissions, while maintaining high quality audio reproduction (THD+N = 0.03%) and high efficiency (η = 88%).

The LM48312 features high efficiency compared to conventional Class AB amplifiers, and other low EMI Class D amplifiers. When driving an 8Ω speaker from a 5V supply, the device operates with 88% efficiency at PO = 1W. The LM48312 features five gain settings, selected through a single logic input, further reducing solution size. A low power shutdown mode reduces supply current consumption to 0.01µA.

Advanced output short circuit protection with auto-recovery prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown.

The LM48312 is a single supply, high efficiency, mono, 2.6W, filterless switching audio amplifier. The LM48312 features TI’s Enhanced Emissions Suppression (E2S) system, that features a unique patented ultra low EMI, spread spectrum, PWM architecture, that significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system improves battery life, reduces external component count, board area consumption, and system cost, simplifying design.

The LM48312 is designed to meet the demands of portable multimedia devices. Operating from a single 5V supply, the device is capable of delivering 2.6W of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM48312 features both a spread spectrum modulation scheme, and an advanced, patented edge rate control (ERC) architecture that significantly reduces emissions, while maintaining high quality audio reproduction (THD+N = 0.03%) and high efficiency (η = 88%).

The LM48312 features high efficiency compared to conventional Class AB amplifiers, and other low EMI Class D amplifiers. When driving an 8Ω speaker from a 5V supply, the device operates with 88% efficiency at PO = 1W. The LM48312 features five gain settings, selected through a single logic input, further reducing solution size. A low power shutdown mode reduces supply current consumption to 0.01µA.

Advanced output short circuit protection with auto-recovery prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown.
filter Buscar otro/a Amplificadores de audio de uso general
Descargar Ver vídeo con transcripción Video

Documentación técnica

No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 4
Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM48312 2.6W, Ultra-Low EMI, Filterless, MonoClass D Audio Pwr Amplifr w/ E2S datasheet (Rev. D) 1/05/2013
Nota sobre la aplicación Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26/08/2019
Nota sobre la aplicación AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27/06/2019
Nota sobre la aplicación AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 1/05/2013

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Modelo de simulación

LM48312 TINA-TI Reference Design

SNAM141.TSC (52 KB) - Diseño de referencia TINA-TI
Productos y hardware compatibles
Modelo de simulación

LM48312 TINA-TI Spice Model

SNAM150.ZIP (21 KB) - Modelo TINA-TI Spice
Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
DSBGA (YZR) 9 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

Ver todos los temas del foro en inglés

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene alguna pregunta sobre calidad, encapsulados o pedido de productos de TI, consulte el servicio de asistencia de TI. ​​​​​​​​​​​​​​

Videos