音频功率放大器,1.8 W,带可选择关断

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概览

NCP4894 是一款差分音频功率放大器,适用于便携式通信设备应用。NCP4894 的绝佳音频特性是手机等应用中优质声音的保证。NCP4894 的失真小于 0.01% (THD+N),能够基于 5.0V 电源向 8.0Ω 负载提供 1.0W 的连续平均功率,在 2.6V 电源下仍然能够提供 250mW。NCP4894 提供优质音频,所需外部组件很少,功耗极低。它具有极低功耗关断模式。为了实现灵活性,关断可通过逻辑高电平或低电平启用,具体取决于 SD 模式引脚上的应用电压。NCP4894 包含的电路可防止开关转换器期间的“杂音”。为了实现最大灵活性,NCP4894 提供外部控制的增益(通过电阻)以及外部控制的开启时间(通过旁通电容器)。由于其卓越 PSRR,可以直接联接电池,不必使用 LDO。此器件采用 9 引脚触发器 CSP、Micro10 和 DFN 3x3 mm 封装。

  • Audio Amplification
  • Mobile Phones
  • PDAs
  • Differential Amplification
  • Shutdown High or Low Selectivity
  • 1.0 W to an 8.0 load from a 5.0 V Power Supply
  • Superior PSRR: Direct Connection to the Battery
  • Pop and Click Noise Protection Circuitry
  • Ultra Low Current Shutdown Mode
  • 2.2 - 5.5 V Operation
  • External Gain Configuration Capability
  • Thermal Overload Protection Circuitry
  • External Turn-on Time Configuration Capability

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NCP4894DMR2G

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Obsolete

CAD Model

Pb

A

H

P

Micro10

1

260

REEL

4000

N

AB

1.8

5.5

Differential

140

0.01

1.9

20

Price N/A

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NCP4894FCT1G

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Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-9

1

260

DSFTP

3000

N

AB

1.8

5.5

Differential

140

0.01

1.9

20

Price N/A

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NCP4894MNR2G

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Obsolete

CAD Model

Pb

A

H

P

DFN-10

1

260

REEL

3000

N

AB

1.8

5.5

Differential

140

0.01

1.9

20

Price N/A

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