首頁 音訊 音訊放大器 喇叭放大器
首頁
音訊
音訊放大器
喇叭放大器

LM4873

現行

2.4-W 立體聲道、類比輸入 AB 類音訊放大器

立即訂購
產品規格表

LM4873

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) Stereo Rating Catalog Load (min) (Ω) 3 Output power (W) 5 SNR (dB) 97 THD + N at 1 kHz (%) 0.3 Iq (typ) (mA) 7.5 Control interface Hardware Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 PSRR (dB) 67 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Stereo Rating Catalog Load (min) (Ω) 3 Output power (W) 5 SNR (dB) 97 THD + N at 1 kHz (%) 0.3 Iq (typ) (mA) 7.5 Control interface Hardware Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 PSRR (dB) 67 Operating temperature range (°C) -40 to 85
  • Input Mux Control and Two Separate Inputs Per Channel
  • Stereo Headphone Amplifier Mode
  • “Click and Pop” Suppression Circuitry
  • Thermal Shutdown Protection Circuitry
  • PCB Area-Saving DSBGA and Thin DSBGA Packages
  • TSSOP and HTSSOP and WQFN Packages

Key Specifications

  • PO at 1% THD+N
    • LM4873LQ, 3Ω, 4Ω Loads 2.4W (typ), 2.1 W (typ)
    • LM4873MTE-1, 3Ω, 4Ω loads 2.4W (typ), 2.1 W (typ)
    • LM4873IBL, 8Ω Load 1.1 W (typ)
    • LM4873MTE, 4Ω 1.9 W (typ)
    • LM4873, 8Ω 1.1 W (typ)
  • Single-Ended Mode THD+N  at 75 mW Into 32Ω 0.5 % (max)
  • Shutdown Current 0.7 µA (typ)
  • Supply Voltage Range 2 to 5.5 V

All trademarks are the property of their respective owners.

  • Input Mux Control and Two Separate Inputs Per Channel
  • Stereo Headphone Amplifier Mode
  • “Click and Pop” Suppression Circuitry
  • Thermal Shutdown Protection Circuitry
  • PCB Area-Saving DSBGA and Thin DSBGA Packages
  • TSSOP and HTSSOP and WQFN Packages

Key Specifications

  • PO at 1% THD+N
    • LM4873LQ, 3Ω, 4Ω Loads 2.4W (typ), 2.1 W (typ)
    • LM4873MTE-1, 3Ω, 4Ω loads 2.4W (typ), 2.1 W (typ)
    • LM4873IBL, 8Ω Load 1.1 W (typ)
    • LM4873MTE, 4Ω 1.9 W (typ)
    • LM4873, 8Ω 1.1 W (typ)
  • Single-Ended Mode THD+N  at 75 mW Into 32Ω 0.5 % (max)
  • Shutdown Current 0.7 µA (typ)
  • Supply Voltage Range 2 to 5.5 V

All trademarks are the property of their respective owners.

The LM4873 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W to a 4Ω load or 2.4W to a 3Ω load with less than 1.0% THD+N (see Notes below). In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. A MUX control pin allows selection between the two stereo sets of amplifier inputs. The MUX control can also be used to select two different closed-loop responses.

Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the LM4873 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.

The LM4873 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on.

Note: An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been properly mounted to a circuit board will deliver 2.1W into 4Ω. The other package options for the LM4873 will deliver 1.1W into 8Ω. See the sections for further information concerning the LM4873MTE-1, LM4873MTE, and the LM4873LQ.

Note: An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been properly mounted to a circuit board and forced-air cooled will deliver 2.4W into 3Ω.

The LM4873 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W to a 4Ω load or 2.4W to a 3Ω load with less than 1.0% THD+N (see Notes below). In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. A MUX control pin allows selection between the two stereo sets of amplifier inputs. The MUX control can also be used to select two different closed-loop responses.

Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the LM4873 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.

The LM4873 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on.

Note: An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been properly mounted to a circuit board will deliver 2.1W into 4Ω. The other package options for the LM4873 will deliver 1.1W into 8Ω. See the sections for further information concerning the LM4873MTE-1, LM4873MTE, and the LM4873LQ.

Note: An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been properly mounted to a circuit board and forced-air cooled will deliver 2.4W into 3Ω.
filter 尋找其它 喇叭放大器
下載

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 1
類型 標題 日期
* Data sheet LM4873 Dual 2.1W Audio Amplifier Plus Stereo Headphone Function datasheet (Rev. E) 2013年 5月 2日

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片