Audio Power Amplifiers | NCP2820

オーディオ・パワーアンプ、クラス D、2.65 W、フィルタレス、モノ

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Overview

NCP2820 は費用効率が高いモノ・クラス D オーディオ・パワーアンプで、5V 電源から 4 Ohm ブリッジ接続負荷へ 2.65W の連続平均電力を供給できます。同じ条件下で、出力パワー・ステージでは 1% 未満の THD+N で 8 Ohm BTL へ 1.4W を供給します。誘導トランスデューサを使用すると出力フィルタが必要ないので、スペースもコストも節約し、携帯電話のハンドセットや PDA 向きです。90% を超える効率で超低シャットダウン電流なので、バッテリ寿命が延び、接合部温度が大幅に下降します。NCP2820 はパルス幅変調技術によりアナログ入力を処理するので、従来のシグマデルタ変調器と比較して出力ノイズと THD が低減されています。さまざまなオーディオ・ソースからの信号を合計しながら、独立したゲインが得られます。よって、携帯電話のハンドセット、イヤホン、スピーカー、メロディ・リンガーまでも NCP2820 1 つで駆動できます。42uV の低ノイズ・フロアにより、負荷感度にかかわらず、A 特性のクリーンな聴取が保証されます。

  • 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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Output Power Typ (W)

VCC Max (V)

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ton Typ (ms)

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Reference Price

NCP2820AFCT2G

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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

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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

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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

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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

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Active

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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