Stereo Audio Amplifier Evaluation Board

Overview

The NCP2809A is a cost-effective fixed gain stereo audio power amplifier capable of delivering 135 mW of continuous average power per channel into 16 ohm loads. This device has been specifically designed to provide high quality output power from low supply voltage, requiring very few external components. The device incorporates a proprietary virtual ground circuit which allows the speakers to be directly connected to the amplifier without the need for bulky DC blocking capacitors.

Since NCP2809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The NCP2809A has an internal gain of 0 dB.

The demo board consists of two circuit configurations to demonstrate operation with and without the output DC blocking capacitors.

  • 135 mW to a 16 ohm Load from a 5.0 V Power Supply
  • Excellent PSRR (85 dB Typical): Direct Connection to the Battery
  • Pop and Click Noise Protection Circuit
  • Ultra Low Current Shutdown Mode
  • 2.2 V - 5.5 V Operation
  • Outstanding Total Harmonic Distortion + Noise (THD+N): < 0.01%
  • Thermal Overload Protection Circuitry

Evalution/Development Tools

Product

Type

Ref. Design

Status

Part Used

Action

Stereo Audio Amplifier Evaluation Board

Evaluation Board

No

Active

$90

More Details

Show More

1-25 of 25

Products per page

Jump to :

Technical Documentation

Name / Description

Document Type

Modified date

NCP2809AEVB_BOM.PDF

1

Eval Board: BOM

71.68 KB

EN

Eval Board: BOM

September 24, 2004

More Details

NCP2809AEVB_SCHEMATIC.PDF

0

Eval Board: Schematic

141.31 KB

EN

Eval Board: Schematic

September 24, 2004

More Details

NCP2809AEVB_GERBER.ZIP

0

Eval Board: Gerber

40.96 KB

EN

Eval Board: Gerber

September 24, 2004

More Details

NCP2809AEVB_TEST_PROCEDURE.PDF

0

Eval Board: Test Procedure

122.88 KB

EN

Eval Board: Test Procedure

September 24, 2004

More Details

Show More