LM49350

生産中止品

グランド基準のステレオ・ヘッドホン・アンプ搭載、超低 EMI の Class D ラウドスピーカ・アンプ搭載、高性能コーデック・サブシステム

LM49350 は生産中止品です。
この製品は生産中止品です。新規設計では代替品をご検討ください。
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比較対象デバイスと類似の機能
TLV320AIC3107 アクティブ 低消費電力ステレオ・コーデック、統合モノラル Class-D アンプ付 Stereo Codec with Class-D Amplifier, 97/92dB SNR DAC/ADC, SE/Differential I/O

製品詳細

Number of ADC channels 2 Number of DAC channels 2 Digital audio interface I2S, PCM Analog inputs 6 Analog outputs 4 Sampling rate (max) (kHz) 192 Rating Catalog ADC SNR (typ) (dB) 90 DAC SNR (typ) (dB) 88 Operating temperature range (°C) -40 to 85
Number of ADC channels 2 Number of DAC channels 2 Digital audio interface I2S, PCM Analog inputs 6 Analog outputs 4 Sampling rate (max) (kHz) 192 Rating Catalog ADC SNR (typ) (dB) 90 DAC SNR (typ) (dB) 88 Operating temperature range (°C) -40 to 85
DSBGA (YPG) 36 10.5625 mm² 3.25 x 3.25

  • High performance 96dB SNR stereo DAC
  • High performance 94dB SNR stereo ADC
  • Up to 192kHz stereo audio playback
  • Up to 48kHz stereo recording
  • Dual bidirectional I 2 S or PCM compatible audio interfaces
  • Read/write I 2 C compatible control interface
  • Flexible digital mixer with sample rate conversion
  • Dual sigma-delta PLLs for operation from any clock at any sample rate
  • Digital 3D stereo enhancement
  • Dual 5 band parametric equalizers
  • Cascadable DSP effects that allow 10 band parametric equalization
  • ALC/Compressor/Limiter on both DAC and ADC paths
  • Ultra low EMI, Class D loudspeaker amplifier with spread spectrum control
  • Ground referenced output cap-less headphone amplifier operation
  • Earpiece speaker amplifier with reduced power consumption mode for mono differential line out applications
  • Stereo auxiliary inputs or mono differential input
  • Differential stereo microphone inputs with single-ended option
  • Automatic level control for digital audio inputs, stereo microphone inputs, and stereo auxiliary inputs
  • Flexible audio routing from input to output
  • 16 Step volume control for microphones with 2dB steps
  • 32 Step volume control for auxiliary inputs in 1.5dB steps
  • Micro-power shutdown mode
  • Available in the 3.5 x 3.5 mm 36 bump micro SMD package

  • High performance 96dB SNR stereo DAC
  • High performance 94dB SNR stereo ADC
  • Up to 192kHz stereo audio playback
  • Up to 48kHz stereo recording
  • Dual bidirectional I 2 S or PCM compatible audio interfaces
  • Read/write I 2 C compatible control interface
  • Flexible digital mixer with sample rate conversion
  • Dual sigma-delta PLLs for operation from any clock at any sample rate
  • Digital 3D stereo enhancement
  • Dual 5 band parametric equalizers
  • Cascadable DSP effects that allow 10 band parametric equalization
  • ALC/Compressor/Limiter on both DAC and ADC paths
  • Ultra low EMI, Class D loudspeaker amplifier with spread spectrum control
  • Ground referenced output cap-less headphone amplifier operation
  • Earpiece speaker amplifier with reduced power consumption mode for mono differential line out applications
  • Stereo auxiliary inputs or mono differential input
  • Differential stereo microphone inputs with single-ended option
  • Automatic level control for digital audio inputs, stereo microphone inputs, and stereo auxiliary inputs
  • Flexible audio routing from input to output
  • 16 Step volume control for microphones with 2dB steps
  • 32 Step volume control for auxiliary inputs in 1.5dB steps
  • Micro-power shutdown mode
  • Available in the 3.5 x 3.5 mm 36 bump micro SMD package

  • The LM49350 is a high performance audio subsystem that supports both analog and digital audio functions. The LM49350 includes a high quality stereo DAC, a high quality stereo ADC, a stereo headphone amplifier that supports ground referenced output cap-less operation, a dual mode earpiece speaker amplifier, and a low EMI Class D loudspeaker amplifier. It is designed for demanding applications in mobile phones and other portable devices.

    The LM49350 features dual bi-directional I 2S or PCM audio interfaces for full range audio and an I 2C compatible interface for control. The stereo DAC path features an SNR of 96dB with 24-bit 48 kHz input. The headphone amplifier delivers 69mWRMS (typ) to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when A_VDD = 3.3V. The earpiece speaker amplifier delivers 58mWRMS (typ) to a 32Ω bridged-tied load with less than 1% distortion (THD+N) when A_VDD = 3.3V. The loudspeaker amplifier delivers up to 495mW into an 8Ω load with less than 1% distortion when LS_VDD = 3.3V and up to 1.2W when LS_VDD = 5.0V.

    The LM49350 employs advanced techniques to reduce power consumption, to reduce controller overhead, to speed development time, and to eliminate click and pop. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. It is therefore ideally suited for mobile phone and other low voltage applications where minimal power consumption, PCB area and cost are primary requirements.


    The LM49350 is a high performance audio subsystem that supports both analog and digital audio functions. The LM49350 includes a high quality stereo DAC, a high quality stereo ADC, a stereo headphone amplifier that supports ground referenced output cap-less operation, a dual mode earpiece speaker amplifier, and a low EMI Class D loudspeaker amplifier. It is designed for demanding applications in mobile phones and other portable devices.

    The LM49350 features dual bi-directional I 2S or PCM audio interfaces for full range audio and an I 2C compatible interface for control. The stereo DAC path features an SNR of 96dB with 24-bit 48 kHz input. The headphone amplifier delivers 69mWRMS (typ) to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when A_VDD = 3.3V. The earpiece speaker amplifier delivers 58mWRMS (typ) to a 32Ω bridged-tied load with less than 1% distortion (THD+N) when A_VDD = 3.3V. The loudspeaker amplifier delivers up to 495mW into an 8Ω load with less than 1% distortion when LS_VDD = 3.3V and up to 1.2W when LS_VDD = 5.0V.

    The LM49350 employs advanced techniques to reduce power consumption, to reduce controller overhead, to speed development time, and to eliminate click and pop. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. It is therefore ideally suited for mobile phone and other low voltage applications where minimal power consumption, PCB area and cost are primary requirements.


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    種類 タイトル 最新の英語版をダウンロード 日付
    * データシート LM49350 High Perf Audio Codec Sub-Sys w/GND-Ref Stereo Hdphne Amp データシート (Rev. D) 2012年 6月 29日

    購入と品質

    記載されている情報:
    • RoHS
    • REACH
    • デバイスのマーキング
    • リード端子の仕上げ / ボールの原材料
    • MSL 定格 / ピーク リフロー
    • MTBF/FIT 推定値
    • 使用原材料
    • 認定試験結果
    • 継続的な信頼性モニタ試験結果
    記載されている情報:
    • ファブの拠点
    • 組み立てを実施した拠点