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LM49120TLX
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LM49120TLX

  • 所属类别：运算放大器
  • 产品名称：单声道AB类扬声器放大器
  • 厂商：NSC
  • 生产批号：11+
  • 封装：QFN
  • 库存状态：有库存
  • 库存量：9000
  • 最低订购量：1
  • 详细资料：点击查找LM49120TLX的pdf资料
  • 点击询价
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  • Product Introduction

peculiarity

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

illustrate

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

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. The programming of digital volume control and mode control goes through a two-wire i 2 C compatible interface.

Key specifications:

■ Output power at V DD = 5V:
Speakers: R L = 8 Ω BTL, THD + N ≤ 1％ 1.3W (typical)
Earphone: R L = 32 Ω, THD + N for SE ≤ 1％ 85mW (typical)
■ At V DD = 3.6V, the output power:
Speakers: R L =8Ω，BTL，THD + N ≤ 1％ 632mW (typical)
■ Output power at V DD = 3.3V:
Speakers: R L =8Ω，BTL，THD + N ≤ 1％ 540mW (typical)
Earphone: R L = 32Ω, THD + N for Octopus Card/SE ≤ 1％ 35MW (typical)


apply

  • mobile phone
  • handheld computer
  • Portable electronics

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LM49120TLX NSC 11+ QFN Mono Class AB speaker amplifier

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