ホーム オーディオ オーディオ・アンプ スピーカ・アンプ
ホーム
オーディオ
オーディオ・アンプ
スピーカ・アンプ

LM4667

アクティブ

選択可能なゲイン、1.3W、モノラル、アナログ入力 Class-D オーディオ・アンプ

ご注文はこちら
データシート

LM4667

アクティブ
データシート ご注文はこちら

製品詳細

Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 4 Output power (W) 1.3 SNR (dB) 83 THD + N at 1 kHz (%) 0.8 Iq (typ) (mA) 8 Control interface Hardware Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 PSRR (dB) 65 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 4 Output power (W) 1.3 SNR (dB) 83 THD + N at 1 kHz (%) 0.8 Iq (typ) (mA) 8 Control interface Hardware Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 PSRR (dB) 65 Operating temperature range (°C) -40 to 85
DSBGA (YZR) 9 3.0625 mm² 1.75 x 1.75 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • No Output Filter Required for Inductive Transducers
  • Selectable Gain of 6dB or 12dB
  • Very Fast Turn on Time: 5ms (typ)
  • Minimum External Components
  • "Click and Pop" Suppression Circuitry
  • Micro-Power Shutdown Mode
  • Short Circuit Protection
  • Space-Saving DSBGA and VSSOP Packages

Key Specifications

  • Efficiency at 3V, 100mW into 8Ω Transducer 74% (typ)
  • Efficiency at 3V, 450mW into 8Ω Transducer 84% (typ)
  • Efficiency at 5V, 1W into 8Ω Transducer 86% (typ)
  • Total Quiescent Power Supply Current: 3.5mA (typ)
  • Total Shutdown Power Supply Current: 0.01μA (typ)
  • Single Supply Range: 2.7V to 5.5V

All trademarks are the property of their respective owners.

  • No Output Filter Required for Inductive Transducers
  • Selectable Gain of 6dB or 12dB
  • Very Fast Turn on Time: 5ms (typ)
  • Minimum External Components
  • "Click and Pop" Suppression Circuitry
  • Micro-Power Shutdown Mode
  • Short Circuit Protection
  • Space-Saving DSBGA and VSSOP Packages

Key Specifications

  • Efficiency at 3V, 100mW into 8Ω Transducer 74% (typ)
  • Efficiency at 3V, 450mW into 8Ω Transducer 84% (typ)
  • Efficiency at 5V, 1W into 8Ω Transducer 86% (typ)
  • Total Quiescent Power Supply Current: 3.5mA (typ)
  • Total Shutdown Power Supply Current: 0.01μA (typ)
  • Single Supply Range: 2.7V to 5.5V

All trademarks are the property of their respective owners.

The LM4667 is a fully integrated single-supply high efficiency switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. Eliminating the output filter reduces parts count, simplifies circuit design, and reduces board area. The LM4667 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4667 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 3V supply, it is capable of driving 8Ω transducer loads at a continuous average output of 450mW with less than 1%THD+N. Its flexible power supply requirements allow operation from 2.7V to 5.5V.

The LM4667 has high efficiency with an 8Ω transducer load compared to a typical Class AB amplifier. With a 3V supply, the IC's efficiency for a 100mW power level is 74%, reaching 84% at 450mW output power.

The LM4667 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).

The LM4667 has fixed selectable gain of either 6dB or 12dB. The LM4667 has short circuit protection against a short from the outputs to VDD, GND, or across the outputs.

The LM4667 is a fully integrated single-supply high efficiency switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. Eliminating the output filter reduces parts count, simplifies circuit design, and reduces board area. The LM4667 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4667 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 3V supply, it is capable of driving 8Ω transducer loads at a continuous average output of 450mW with less than 1%THD+N. Its flexible power supply requirements allow operation from 2.7V to 5.5V.

The LM4667 has high efficiency with an 8Ω transducer load compared to a typical Class AB amplifier. With a 3V supply, the IC's efficiency for a 100mW power level is 74%, reaching 84% at 450mW output power.

The LM4667 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).

The LM4667 has fixed selectable gain of either 6dB or 12dB. The LM4667 has short circuit protection against a short from the outputs to VDD, GND, or across the outputs.

filter その他の スピーカ・アンプ を検索
ダウンロード

技術資料

star =TI が選定したこの製品の主要ドキュメント
結果が見つかりませんでした。検索条件をクリアしてから、再度検索を試してください。
1 をすべて表示
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 LM4667  Filterless High Efficiency 1.3W Switching Audio Amplifier データシート (Rev. C) 2013年 5月 2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

サポートとトレーニング

TI E2E™ フォーラムでは、TI のエンジニアからの技術サポートを提供

投稿されたすべてのフォーラムトピック (英語) を表示

コンテンツは、TI 投稿者やコミュニティ投稿者によって「現状のまま」提供されるもので、TI による仕様の追加を意図するものではありません。使用条件をご確認ください。

TI 製品の品質、パッケージ、ご注文に関するお問い合わせは、TI サポートをご覧ください。​​​​​​​​​​​​​​