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2 x 150 mW Class AB Headphone Amplifier Board - LM4881 Zoom

2 x 150 mW Class AB Headphone Amplifier Board - LM4881

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SKU: AA-AB32261

Welcome to use this self-made 2 x 150mW headphone amplifier board which has perfect class-AB architecture and integrated LM4881 chip to achieve the 150mW per channel power output. This board can be powered by any DC power supply ranging from 8 to 24V, which can be used to drive any headphone whose typical impedance is 8 ohm, 16ohm or 32ohm.

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Product Description

    Details

     
    2 x 150 mW Class-AB Headphone Amplifier Board – LM4881  

    Brief Introduction:

    Welcome to use this self-made 2 x 150mW headphone amplifier board which has perfect class-AB architecture and integrated LM4881 chip to achieve the 150mW per channel power output. 
    This board can be powered by any DC power supply ranging from 8 to 24V, which can be used 
    to drive any headphone whose typical impedance is 8 ohm, 16ohm or 32ohm.

     

    Features:

    • Size: 3 “ x 2 “
    • Supply voltage: DC 8V to 24V
    • Gain adjustable
    • Thermal shutdown protection
    • Perfect class-AB architecture

    Applications:
    • Mini/Micro systems
    • Personal computers
    • Microphone amplifier
    • Preamplifier
    • Portable audio amplifier

    Specification:

    Following table lists all typical data of the Amp board. For full specification, please refer to the 
    data sheet of LM4881 chip.
    TA = 25℃, fIN = 1 kHz sine wave, RL = 4Ω. (Unless otherwise stated)

    Parameter

    Condition

    Min 

    Typ

    Max

    Supply Voltage (V)

    -

    8

    12

    24

    Quiescent Current (mA)

    VIN = 0V, IO = 0A

    -

    3.6

    6.0

    Input Sensitivity (V)

    RL = 8Ω

    -

    0.194

    -

    Input Impedance (Kohm)

    SW1 ON

    -

    1.7

    -

    SW1 OFF

     

    3.3

    Gain (dB)

    SW1 OFF

    -

    9.6

    -

    SW1 ON

    -

    15.7

    -

    Output Power (mW rms)

    THD= 0.1%; fIN = 1 kHz; RL= 8Ω

    -

    150

    -

    Efficiency (%)

    -

    -

    22.7

    -

    Minimum Load (ohm)

    -

    -

    8

    -

    16

    32

    Frequency Response (Hz)

    ±3dB

    50

    -

    600K

    Operating Temperature (℃)

    -

    0

    20

    50

     
     
    Package content:
    • 2 x 150 mW Class-AB Headphone Amplifier Board x 1

    Manual  Dawnload
     
Additional Information

    Additional Information

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