Audio Power Amplifier, True Ground Stereo Headphone

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Overview

NCP2811 is a dual audio power amplifier designed for portable communication device applications such as mobile phones. This part is capable of delivering 27 mW of continuous average power into a 16 Ω load from a 2.7 V power supply with a THD+N of 1%. Based on the power supply delivered to the device, an internal power management block generates a symmetrical positive and negative voltage. Thus, the internal amplifiers provide outputs referenced to Ground. In this NOCAPTM configuration, the two external heavy coupling capacitors can be removed. It offers significant space and cost savings compared to a typical stereo application. NCP2811 is available with an external adjustable gain (version A), or with an internal gain (version B). It reaches a superior PSRR and noise floor. Thus, it offers high fidelity audio sound, as well as a direct connection to the battery. It contains circuitry to prevent from Pop and Click noise that would otherwise occur during turn on and turn off transitions. The device is available in 12 bump CSP package (2 x 1.5 mm) which help to save space on the board.

  • Stereo headphone amplifier
  • Cellular phones
  • Personal Digital Assistant and Portable Media Player
  • MP3 Player
  • Notebook PC
  • NoCapTM Output Eliminate DC-Blocking Capacitors
  • High PSRR : -100 dB
  • Pop and Click protection circuitry
  • Internal gain (-1.5 V/V) or external gain
  • 2.7V-5.0V Operation
  • Thermal overload protection circuitry

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7

Product

Status

CAD Models

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Class

Output Power Typ (W)

VCC Max (V)

Output Type

ton Typ (ms)

THD + N Typ (%)

IQ Typ (mA)

ISD Typ (nA)

Reference Price

NCP2811ADTBR2G

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Active, Not Rec

CAD Model

Pb

A

H

P

TSSOP-14 WB

1

260

REEL

2500

N

AB

0.11

5

Multiple Analog

1

0.01

6

10

$0.4593

More Details

NCP2811AFCT1G

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Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-12

1

260

DSFTP

3000

N

AB

0.11

5

Multiple Analog

1

0.01

6

10

Price N/A

More Details

NCP2811AMTTXG

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Obsolete

CAD Model

Pb

A

H

P

WQFN-12

1

260

REEL

3000

N

AB

0.11

5

Multiple Analog

1

0.01

6

10

Price N/A

More Details

NCP2811BDTBR2G

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Obsolete

CAD Model

Pb

A

H

P

TSSOP-14 WB

1

260

REEL

2500

N

AB

0.11

5

Multiple Analog

1

0.01

6

10

Price N/A

More Details

NCP2811BFCCT1G

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Last Shipments

CAD Model

Pb

A

H

P

Flip-Chip-12

1

260

DSFTP

3000

N

AB

0.11

5

Multiple Analog

1

0.01

6

10

Price N/A

More Details

NCP2811BFCT1G

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Obsolete

CAD Model

Pb

A

H

P

Flip-Chip-12

1

260

DSFTP

3000

N

AB

0.11

5

Multiple Analog

1

0.01

6

10

Price N/A

More Details

NCP2811BMTTXG

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Obsolete

CAD Model

Pb

A

H

P

WQFN-12

1

260

REEL

3000

N

AB

0.11

5

Multiple Analog

1

0.01

6

10

Price N/A

More Details

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