LM4879

ACTIVO

Amplificador de audio mono de Clase AB, entrada analógica y 1.1 W con modo de apagado de corriente u

Detalles del producto

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 8 Output power (W) 1.2 THD + N at 1 kHz (%) 0.1 Iq (typ) (mA) 5 Control interface Hardware Analog supply (min) (V) 2.2 Analog supply voltage (max) (V) 5.5 PSRR (dB) 68 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 8 Output power (W) 1.2 THD + N at 1 kHz (%) 0.1 Iq (typ) (mA) 5 Control interface Hardware Analog supply (min) (V) 2.2 Analog supply voltage (max) (V) 5.5 PSRR (dB) 68 Operating temperature range (°C) -40 to 85
VSSOP (DGS) 10 14.7 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4
  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Unity Gain Stable
  • Ultra Low Current Shutdown Mode
  • Fast Turn On: 80ms (typ), 110ms (max) with 1.0µF Capacitor
  • BTL Output Can Drive Capacitive Loads up to 100pF
  • Advanced Pop and Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions
  • 2.2V - 5.0V Operation
  • Available in Space-Saving DSBGA, WSON, and VSSOP Packages

Key Specifications

  • PSRR: 5V, 3V at 217Hz: 62dB (typ)
  • Power Output at 5V, 1%THD+N: 1.1W (typ)
  • Power Output at 3V, 1%THD+N: 350mW (typ)
  • Shutdown Current: 0.1µA (typ)

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

  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Unity Gain Stable
  • Ultra Low Current Shutdown Mode
  • Fast Turn On: 80ms (typ), 110ms (max) with 1.0µF Capacitor
  • BTL Output Can Drive Capacitive Loads up to 100pF
  • Advanced Pop and Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions
  • 2.2V - 5.0V Operation
  • Available in Space-Saving DSBGA, WSON, and VSSOP Packages

Key Specifications

  • PSRR: 5V, 3V at 217Hz: 62dB (typ)
  • Power Output at 5V, 1%THD+N: 1.1W (typ)
  • Power Output at 3V, 1%THD+N: 350mW (typ)
  • Shutdown Current: 0.1µA (typ)

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

The LM4879 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4879 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.

The LM4879 features a low-power consumption global shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4879 features an internal thermal shutdown protection mechanism.

The LM4879 contains advanced pop and click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4879 is unity-gain stable and can be configured by external gain-setting resistors.

The LM4879 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4879 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.

The LM4879 features a low-power consumption global shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4879 features an internal thermal shutdown protection mechanism.

The LM4879 contains advanced pop and click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4879 is unity-gain stable and can be configured by external gain-setting resistors.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM4879 1.1 Watt Audio Power Amplifier datasheet (Rev. G) 02 may 2013

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 (DGS) 10 Ultra Librarian
WSON (NGT) 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

Soporte y capacitación

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