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LM4954

現行

3.0-W 單聲道、2.7 至 9-V 類比輸入 AB 類音訊放大器

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產品規格表

LM4954

現行
產品規格表 立即訂購

產品詳細資料

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 8 Output power (W) 3 THD + N at 1 kHz (%) 0.1 Iq (typ) (mA) 2.7 Control interface Hardware Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 9 PSRR (dB) 71 Operating temperature range (°C) to
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 8 Output power (W) 3 THD + N at 1 kHz (%) 0.1 Iq (typ) (mA) 2.7 Control interface Hardware Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 9 PSRR (dB) 71 Operating temperature range (°C) to
DSBGA (YZR) 9 3.0625 mm² 1.75 x 1.75
  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Unity Gain Stable
  • Externally Configurable Gain
  • Ultra Low Current Active Low Shutdown Mode
  • BTL Output can Drive Capacitive Loads Up to 100pF
  • “Click and Pop” Suppression Circuitry
  • 2.7V - 9.0V Operation
  • Available in Space-Saving DSBGA Package

Key Specifications

  • Wide Power Supply Voltage Range, 2.7 ≤ VDD ≤ 9V
  • Output Power: VDD = 7V, 1% THD+N, 2.4W (Typ)
  • Quiescent Power Supply Current, 3mA (Typ)
  • PSRR: VDD = 5V and 3V at 217Hz, 80dB (Typ)
  • Shutdown Power Supply Current, 0.01µA (Typ)

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

  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Unity Gain Stable
  • Externally Configurable Gain
  • Ultra Low Current Active Low Shutdown Mode
  • BTL Output can Drive Capacitive Loads Up to 100pF
  • “Click and Pop” Suppression Circuitry
  • 2.7V - 9.0V Operation
  • Available in Space-Saving DSBGA Package

Key Specifications

  • Wide Power Supply Voltage Range, 2.7 ≤ VDD ≤ 9V
  • Output Power: VDD = 7V, 1% THD+N, 2.4W (Typ)
  • Quiescent Power Supply Current, 3mA (Typ)
  • PSRR: VDD = 5V and 3V at 217Hz, 80dB (Typ)
  • Shutdown Power Supply Current, 0.01µA (Typ)

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

The LM4954 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 2.4 Watts of continuous average power to an 8Ω BTL load with less than 1% THD+N from a 7VDC power supply.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal number of external components. The LM4954 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.

The LM4954 features a low-power consumption global shutdown mode which is achieved by driving the shutdown pin with logic low. Additionally, the LM4954 features an internal thermal shutdown protection mechanism.

The LM4954 contains advanced pop & click circuitry which eliminates noises that would otherwise occur during turn-on and turn-off transitions.

The LM4954 is unity-gain stable and can be configured by external gain-setting resistors.

The LM4954 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 2.4 Watts of continuous average power to an 8Ω BTL load with less than 1% THD+N from a 7VDC power supply.

Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal number of external components. The LM4954 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.

The LM4954 features a low-power consumption global shutdown mode which is achieved by driving the shutdown pin with logic low. Additionally, the LM4954 features an internal thermal shutdown protection mechanism.

The LM4954 contains advanced pop & click circuitry which eliminates noises that would otherwise occur during turn-on and turn-off transitions.

The LM4954 is unity-gain stable and can be configured by external gain-setting resistors.

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* Data sheet LM4954  High Voltage 3 Watt Audio Power Amplifier datasheet (Rev. B) 2013年 4月 8日

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