Audio Power Amplifiers | NCP2820

音频功率放大器，D 级，2.65 W，无滤波器，单声道

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概览

NCP2820 是一款成本高效的单声道 D 级音频功率放大器，能够基于 5V 电源向 4 Ω 桥接负载提供 2.65W 的连续平均功率。在相同条件下，输出功率级可以不到 1% 的 THD+N 向 8 Ω BTL 负载提供 1.4W 功率。对于蜂窝电话听筒或 PDA，它可以带来空间和成本节省，因为使用直感传感器时无需输出滤波器。能效超过 90%，关断电流极低，可以延长电池寿命，大大降低结温度。NCP2820 使用脉宽调制技术处理弄你输入，与传统 sigma-delta 调制器相比可降低输出噪声和 THD。该器件在从不同音频源合并信号的同时实现独立增益。因此，在蜂窝电话听筒、耳机和扬声器，甚至旋律振铃器中，都可以用一个 NCP2820 进行驱动。由于较低的 42uV A 加权本底噪音，无论负载灵敏度如何都可保证清晰的收听。

  • Audio Amplification for 4ohm/ 8ohm speaker
  • Cellular Phone
  • Portable Game, DVD
  • Global Positioning System/ Device (GPS/ GPN)
  • Smart phone, PDA, PMP
  • Optimized PWM Output Stage: Filterless Capability
  • Efficiency up to 90% and Low 2.5mA Typical Quiescent Current
  • Large Output Power Capability: 1.4W with 8Ω Load and THD+N<1%
  • Wide Supply Voltage Range: 2.5-5.5V Operating Voltage
  • High Performance, THD+N of 0.03%@Vp=5V, RL=8Ω, Pout=100mW
  • Excellent PSRR (-65dB): No Need for Voltage Regulation
  • Surface Mounted Package 9-Pin Flip-Chip CSP (SnPb and Pb-Free)
  • Fully Differential Design. Eliminates Two Input Coupling Capacitors
  • Very Fast Turn On/Off Times with Advanced Rising and Falling Gain Technique
  • External Gain Configuration Capability
  • Internally Generated 250kHz Switching Frequency
  • Short Circuit Protection Circuitry
  • Pop & Click Noise Protection Circuitry

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Package Type

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MSL Temp (°C)

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Class

Output Power Typ (W)

VCC Max (V)

Output Type

ton Typ (ms)

THD + N Typ (%)

IQ Typ (mA)

ISD Typ (nA)

Reference Price

NCP2820AFCT2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-9

499AL

1

260

DSFTP

3000

N

D

2.12

5.5

Differential

1

0.05

2.2

300

Price N/A

More Details

NCP2820FCT1G

Contact Sales

Last Shipments

CAD Model

Pb

A

H

P

Flip-Chip-9

499AL

1

260

DSFTP

3000

N

D

2.12

5.5

Differential

9

0.05

2.2

300

Price N/A

More Details

NCP2820FCT2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-9

499AL

1

260

DSFTP

3000

N

D

2.12

5.5

Differential

9

0.05

2.2

300

Price N/A

More Details

NCP2820MUTBG

Contact Sales

Last Shipments

CAD Model

Pb

A

H

P

DFN-8

506AV

1

260

REEL

3000

N

D

2.19

5.5

Differential

1

0.05

2.2

300

Price N/A

More Details

NCV2820MUTBG

Contact Sales

Lifetime

CAD Model

Pb

A

H

P

DFN-8

506AV

1

260

REEL

3000

N

D

2.19

5.5

Differential

1

0.05

2.2

300

$0.802

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