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LM4670

アクティブ

外部から構成可能なゲイン、3W、モノラル、アナログ入力 Class-D オーディオ・アンプ

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データシート

LM4670

アクティブ
データシート ご注文はこちら

製品詳細

Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 4 Output power (W) 3 SNR (dB) 93 THD + N at 1 kHz (%) 0.35 Iq (typ) (mA) 7 Control interface Hardware Analog supply (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 PSRR (dB) 68 Operating temperature range (°C) -40 to 85
Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 4 Output power (W) 3 SNR (dB) 93 THD + N at 1 kHz (%) 0.35 Iq (typ) (mA) 7 Control interface Hardware Analog supply (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 PSRR (dB) 68 Operating temperature range (°C) -40 to 85
DSBGA (YZR) 9 3.0625 mm² 1.75 x 1.75 WSON (NGQ) 8 9 mm² 3 x 3
  • No Output Filter Required for Inductive Loads
  • Externally Configurable Gain
  • Very Fast Turn on Time: 1.35ms (Typ)
  • Minimum External Components
  • "Click and Pop" Suppression Circuitry
  • Micro-Power Shutdown Mode
  • Short Circuit Protection
  • Available in Space-Saving DSBGA and WSON Packages

Key Specifications

  • Efficiency at 3.6V, 100mW into 8Ω Speaker, 77% (Typ)
  • Efficiency at 3.6V, 600mW into 8Ω Speaker, 88% (Typ)
  • Efficiency at 5V, 1W into 8Ω Speaker, 87% (Typ)
  • Quiescent Current, 3.6V Supply, 4.8mA (Typ)
  • Total Shutdown Power Supply Current, 0.01µA (Typ)
  • Single Supply Range, 2.4 to 5.5V

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

  • No Output Filter Required for Inductive Loads
  • Externally Configurable Gain
  • Very Fast Turn on Time: 1.35ms (Typ)
  • Minimum External Components
  • "Click and Pop" Suppression Circuitry
  • Micro-Power Shutdown Mode
  • Short Circuit Protection
  • Available in Space-Saving DSBGA and WSON Packages

Key Specifications

  • Efficiency at 3.6V, 100mW into 8Ω Speaker, 77% (Typ)
  • Efficiency at 3.6V, 600mW into 8Ω Speaker, 88% (Typ)
  • Efficiency at 5V, 1W into 8Ω Speaker, 87% (Typ)
  • Quiescent Current, 3.6V Supply, 4.8mA (Typ)
  • Total Shutdown Power Supply Current, 0.01µA (Typ)
  • Single Supply Range, 2.4 to 5.5V

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

The LM4670 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 external component count, simplifies circuit design, and reduces board area. The LM4670 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4670 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.3W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.

The LM4670 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 77%, reaching 88% at 600mW output power.

The LM4670 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).

The gain of the LM4670 is externally configurable which allows independent gain control from multiple sources by summing the signals.

The LM4670 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 external component count, simplifies circuit design, and reduces board area. The LM4670 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4670 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.3W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.

The LM4670 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 77%, reaching 88% at 600mW output power.

The LM4670 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).

The gain of the LM4670 is externally configurable which allows independent gain control from multiple sources by summing the signals.
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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 LM4670  Filterless High Efficiency 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

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