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LM49120TLX
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LM49120TLX

  • Category:Operational amplifiers
  • Product Name:Mono class AB speaker amplifier
  • Manufacturers:NSC
  • Production Batch Number:11+
  • Encapsulation:QFN
  • Stock Status:There is stock
  • Stock Quantity:9000
  • Minimum order quantity: 1
  • Details:Click here to find pdf information on the LM49120TLX
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  • Product introduction

peculiarity

  • RF immunity
  • Optional Octopus card/SE headphone driver
  • 32 levels of volume control
  • Click inhibition
  • Independent speaker and headphone gain settings
  • Minimal external components
  • Thermal overload protection
  • Micropower shutdown
  • Space-saving 16-ball mciro SMD package
  • Thermal shutdown protection
  • Micropower shutdown
  • I 2 C control interface

illustrate

The LM49120 is an audio subsystem designed for compact portable handheld applications such as cellular phones. The LM49120 combines a single 16-ball micro SMD package mono 1.3W speaker amplifier, stereo 85mW/ch output capacitorless headphone amplifier, 32-stage volume control, input mixer/multiplexer.

The LM49120 has three input channels: two single-ended stereo inputs and one differential mono input. 32-step digital volume control for each input function. The headphone output stage uses an 8-step (18 dB - 0 dB) attenuator, while the speaker output stage has two selectable (0 dB/+6 dB) gain settings. Digital volume control and mode control are programmed through a two-wire I 2 C-compatible interface.

Main specifications

■ In VDD= 5V output power:
Speaker: RL = 8Ω BTL, THD + N ≤ 1％ 1.3W (typical)
Earphone: RL = 32Ω, THD + N of SE ≤ 1％ 85mW (typical)
■ In VDD= 3.6V, output power:
Speaker: RL =8Ω，BTL，THD + N ≤ 1％ 632mW (typical)
■ In VDD= 3.3V Output Power:
Speaker: RL =8Ω，BTL，THD + N ≤ 1％ 540mW (typical)
Earphone: RL = 32Ω, THD + N of Octopus card/SE ≤ 1％ 35MW (typical)


apply

  • mobile phone
  • Pocket PC
  • Portable electronics

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Model Manufacturers lot number encapsulation illustrate
LM49120TLX NSC 11+ QFN Mono class AB speaker amplifier

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