Product Description
- Size: 3 “ x 2 “
- Supply voltage: DC 8V to 24V
- Gain adjustable
- Thermal shutdown protection
- Perfect class-AB architecture
- Mini/Micro systems
- Personal computers
- Microphone amplifier
- Preamplifier
- Portable audio amplifier
- 2 x 150 mW Class-AB Headphone Amplifier Board x 1
Details
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:
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 |
Additional Information
Additional Information
| UPC | No |
|---|
