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LM49200

現行

500-mW、立體聲道、類比輸入 AB 類音訊放大器及 I2C 控制

立即訂購
產品規格表

LM49200

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 85
Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YZR) 20 6.1875 mm² 2.75 x 2.25
  • Differential Mono Input and Stereo Single-Ended Input
  • 32-Step Digital Volume Control (-80 to +18dB)
  • Three Independent Volume Channels (Left, Right, Mono)
  • Separate Headphone Volume Control
  • Flexible Output for Speaker and Headphone Output
  • True Ground Headphone Amplifier Eliminates Large DC Blocking Capacitors Reducing PCB Space and Cost
  • Receiver Pass-Through Capability
  • Soft Enable Function
  • RF Immunity Topology
  • “Click and Pop” Suppression Circuitry
  • Thermal Shutdown Protection
  • Micro-Power Shutdown
  • I2C Control Interface
  • Available in Space-Saving DSBGA Package

Key Specifications

  • Supply Voltage (VDD): 2.7V ≤ VDD ≤ 5.5V
  • I2C Supply Voltage: 1.7V ≤ I2CVDD ≤ 5.5V
  • Output power at VDD = 5V, 1% THD+N
    • RL = 8Ω speaker: 1.25W (typ)
    • RL = 32Ω headphone: 38mW (typ)
  • Output power at VDD = 3.3V, 1% THD+N
    • RL = 8Ω speaker: 520W (typ)
    • RL = 32Ω headphone: 38mW (typ)
  • PSRR:
    • VDD = 3.3V, 217Hz ripple, Mono In: 95dB (typ)
  • Shutdown power supply current 0.02μA (typ)

All trademarks are the property of their respective owners.

  • Differential Mono Input and Stereo Single-Ended Input
  • 32-Step Digital Volume Control (-80 to +18dB)
  • Three Independent Volume Channels (Left, Right, Mono)
  • Separate Headphone Volume Control
  • Flexible Output for Speaker and Headphone Output
  • True Ground Headphone Amplifier Eliminates Large DC Blocking Capacitors Reducing PCB Space and Cost
  • Receiver Pass-Through Capability
  • Soft Enable Function
  • RF Immunity Topology
  • “Click and Pop” Suppression Circuitry
  • Thermal Shutdown Protection
  • Micro-Power Shutdown
  • I2C Control Interface
  • Available in Space-Saving DSBGA Package

Key Specifications

  • Supply Voltage (VDD): 2.7V ≤ VDD ≤ 5.5V
  • I2C Supply Voltage: 1.7V ≤ I2CVDD ≤ 5.5V
  • Output power at VDD = 5V, 1% THD+N
    • RL = 8Ω speaker: 1.25W (typ)
    • RL = 32Ω headphone: 38mW (typ)
  • Output power at VDD = 3.3V, 1% THD+N
    • RL = 8Ω speaker: 520W (typ)
    • RL = 32Ω headphone: 38mW (typ)
  • PSRR:
    • VDD = 3.3V, 217Hz ripple, Mono In: 95dB (typ)
  • Shutdown power supply current 0.02μA (typ)

All trademarks are the property of their respective owners.

The LM49200 is a fully integrated audio subsystem with a stereo power amplifier capable of delivering 500mW of continuous average power per channel into 8Ω with 1% THD+N using a 3.3V supply. The LM49200 includes a separate stereo headphone amplifier that can deliver 35mW per channel into 32Ω.

The LM49200 has three input channels. A pair of single-ended inputs and a fully differential input channel. The LM49200 features a 32-step digital volume control on the input stage and an 8-step digital volume control on the headphone output stage.

The digital volume control and output modes are programmed through a two-wire I2C compatible interface that allows flexibility in routing and mixing audio channels.

The LM49200 is designed for cellular phone, PDA, and other portable handheld applications. The high level of integration minimizes external components. The True Ground headphone amplifier eliminates the physically large DC blocking output capacitors reducing required board space and reducing cost.

The LM49200 is a fully integrated audio subsystem with a stereo power amplifier capable of delivering 500mW of continuous average power per channel into 8Ω with 1% THD+N using a 3.3V supply. The LM49200 includes a separate stereo headphone amplifier that can deliver 35mW per channel into 32Ω.

The LM49200 has three input channels. A pair of single-ended inputs and a fully differential input channel. The LM49200 features a 32-step digital volume control on the input stage and an 8-step digital volume control on the headphone output stage.

The digital volume control and output modes are programmed through a two-wire I2C compatible interface that allows flexibility in routing and mixing audio channels.

The LM49200 is designed for cellular phone, PDA, and other portable handheld applications. The high level of integration minimizes external components. The True Ground headphone amplifier eliminates the physically large DC blocking output capacitors reducing required board space and reducing cost.

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* Data sheet Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier datasheet (Rev. A) 2013年 4月 8日

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