Dual
LM3886TF
This
pcb consists of two LM3886TF amplifiers. With it,
you can easily construct a high quality stereo amplifier.
Other uses include bi-amping or multiple channels
amplification.
Only
quality components are used. No ceramics in the signal
path. In fact, the input which is often an electrolytic
capacitor is a 2.2uF film cap. Feedback cap is a silvered-mica.
All resistors are 1% metal film. A bit of a luxury
for a chip amp.
The
board is fairly compact, measuring only 4.3"
x 1.6". To keep to this size, the power supply
filter caps are not on board. Users have the choice
of the PSU20K or their own power supply.
 1kHz
Full Power into 8Ω |
 10kHz
Square Wave into 8Ω |
Dual
LM3886TF Specifications
Power
Output = 60W into 4 Ω | 28W into 8 Ω
Input Sensitivity (@ 1kHz before Clip) = 0.7V RMS
Input Impedance = 20K
Rise Time = 2.4us at 10kHz Sq into 8Ω
Voltage Gain = 26dB
Power
Supply
Power transformer = 20-0-20Vac
Supply Rails = +/- 28Vdc
PCB
= 4.3" X 1.6" (109mm x 41mm)
Double Sided | FR4
The
Dual LM3886TF is a two channels pcb
and is supplied Unassembled.
To
complete the amplifier, the following are
needed
1) a power supply consisting of a power transformer,
filter capacitors and a bridge rectifier
2) a heatsink for the LM3886TF chip amps.
3) a metal case and the necessary connectors
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