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2 X 150 mW Class-AB Headphone Amplifier Board –LM4881（AA-AB32261）

 
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Description
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
Shipping & Handling

Payment Method

Refund and Return

On Mar-15-17 at 19:00:34 PDT, seller added the following information:

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