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LM4819

現行

採用 VSSOP 封裝的 350-mW、單聲道、類比輸入、AB 類音訊放大器

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產品規格表

LM4819

現行
產品規格表 立即訂購

產品詳細資料

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2 Load (min) (Ω) 8 Output power (W) 0.35 SNR (dB) 102 THD + N at 1 kHz (%) 1 Iq (typ) (mA) 1.5 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2 Load (min) (Ω) 8 Output power (W) 0.35 SNR (dB) 102 THD + N at 1 kHz (%) 1 Iq (typ) (mA) 1.5 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 85
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGL) 8 6.25 mm² 2.5 x 2.5
  • WSON, SOIC, and VSSOP Surface Mount Packaging
  • Switch On/Off Click Suppression
  • Unity-Gain Stable
  • Minimum External Components

Key Specifications

  • THD+N at 1kHz, 350mW Continuous Average Output Power into 16Ω: 10% (max)
  • THD+N at 1kHz, 300mW Continuous Average Output Power into 8Ω: 10% (max)
  • Shutdown Current: 0.7μA (typ)

All trademarks are the property of their respective owners.

  • WSON, SOIC, and VSSOP Surface Mount Packaging
  • Switch On/Off Click Suppression
  • Unity-Gain Stable
  • Minimum External Components

Key Specifications

  • THD+N at 1kHz, 350mW Continuous Average Output Power into 16Ω: 10% (max)
  • THD+N at 1kHz, 300mW Continuous Average Output Power into 8Ω: 10% (max)
  • Shutdown Current: 0.7μA (typ)

All trademarks are the property of their respective owners.

The LM4819 is a mono bridged power amplifier that is capable of delivering 350mWRMS output power into a 16Ω load or 300mWRMS output power into an 8Ω load with 10% THD+N from a 5V power supply.

The LM4819 Boomer audio power amplifier is designed specifically to provide high quality output power and minimize PCB area with surface mount packaging and a minimal amount of external components. Since the LM4819 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications.

The closed loop response of the unity-gain stable LM4819 can be configured using external gain-setting resistors. The device is available in WSON, VSSOP, and SOIC package types to suit various applications.

The LM4819 is a mono bridged power amplifier that is capable of delivering 350mWRMS output power into a 16Ω load or 300mWRMS output power into an 8Ω load with 10% THD+N from a 5V power supply.

The LM4819 Boomer audio power amplifier is designed specifically to provide high quality output power and minimize PCB area with surface mount packaging and a minimal amount of external components. Since the LM4819 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications.

The closed loop response of the unity-gain stable LM4819 can be configured using external gain-setting resistors. The device is available in WSON, VSSOP, and SOIC package types to suit various applications.
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* Data sheet LM4819  350mW Audio Power Amplifier with Shutdown Mode datasheet (Rev. D) 2013年 3月 21日

設計與開發

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開發板

LM4819MBD — 具有關機模式的 350mW 音訊功率放大器

The LM4819 is a mono bridged power amplifier that is capable of delivering 350mWRMS output power into a 16Ω load or 300mWRMS output power into an 8Ω load with 10% THD+N from a 5V power supply.

This LM4819MBD is an evaluation board designed to ease the evaluation and effort during the development of (...)

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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 (...)
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參考設計

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This design implements a network camera with a QVGA display panel and an embedded web server for remote monitoring.  With a memory footrpint of 250KB for the web server, there is ample memory available on the TM4C129x microcontroller for additional customizations.
Design guide: PDF
電路圖: PDF
參考設計

TIDM-TM4C129POEAUDIO — 支援乙太網路供電 (PoE) 的音頻通訊參考設計

This design uses Texas Instrument's high performance TM4C129x microcontrollers (MCUs) with integrated Ethernet PHY to capture, exchange and playback audio efficiently with power supplied over the network (PoE solution) instead of separate external power sources. The application uses TivaWare (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDM-CONNECTED-ETHERNET — 連接乙太網路、USB 和 LCD 的參考設計

This reference design will demonstrate several Ethernet- and LCD-enabled applications such as remote sensor monitoring, Ethernet configuration via web-based and LCD dashboards and aware applications that interface with weather websites.
Design guide: PDF
電路圖: PDF
封裝 引腳 下載
SOIC (D) 8 檢視選項
VSSOP (DGK) 8 檢視選項
WSON (NGL) 8 檢視選項
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