LM3886 Hi-Fi Hi-Performance Stereo Amplifier PCB Design Overview and information about pcb functions

In This Video We Will Look At The:- 68W+68W Hi-Fi Hi-Performance Stereo Amplifire Which Based On LM3886 IC

LM3886 Hi-Fi Hi-Performance Amplifire 2Channel Amplifier Board
This is A LM3886 Hi-Fi Hi-Performance Amplifire, A 2Channel Stereo Amplifier Board with OnBoard uPC1237HA IC Based Speaker Protection Utilizing All The Fetures Of IC Mention In The Datasheet Like [OCP, Delay, DC Offset, AC-Powerloss Detection].


How Does IT Work?:
68W+68W Hi-Fi Stereo Amplifire:
Each Channel Uses 1 LM3886TF IC To Give High Output Upto 68W Per Channel With Hi-Fi Audio Sound Quaility and Low THD. To Get 2Channels You Will need 2 [ LM3886TF ]ICs To make Stereo Amplifire. Each Channel have it's own High Quaility 10A Leone Relay , Zoble Network and Thiele Networks Coils at Output which are made of 18SWG Copper Wire.


Key Features:
uPC1237 Speaker Protection:
Time Delay: Upon Powering ON the Amplifire there is 4 Second Delay afterwords Speakers are connected to outputs, which Prevent Amplifier Thump/Pop Sound during Power On By speakers .
DC-Offset: When 1.5V DC Voltages Detected On Amplifires outputs , it will go in Protect Mode and Red Led will Glow.
OCP: In case of overload amp will go in Protect Mode and Disconnect the load.
AC-Powerloss Detection:The moment that amplifier-power is turned off, it will make relay broken OFF and then speaker disconnected from amplifier to prevent a shock off Thump/Pop noise coming from Speakers.
And For Extra Safety It Also Have Over-Temp-Protection.


Output:It Can Provides-
40W-50W RMS Per Channel @ 8 Ohms [LM3886TF]
50W-68W RMS Per Channel @ 4 Ohms [LM3886TF]

Power Supply Requirement:
±25V To ±28V DC For 4Ohms Load
±28V To ±35V DC For 8Ohms Load

Features for the LM3886
68W Cont. Avg. Output Power into 4Ω at VCC = ±28V
38W Cont. Avg. Output Power into 8Ω at VCC = ±28V
50W Cont. Avg. Output Power into 8Ω at VCC = ±35V
135W Instantaneous Peak Output Power Capability
Signal-to-Noise Ratio ≥ 92dB
An Input Mute Function
Output Protection from a Short to Ground or to the Supplies via Internal Current Limiting Circuitry
Output Over-Voltage Protection against Transients from Inductive Loads.

Description for the LM3886
The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4Ω load and 38W into 8Ω with 0.1% THD+N from 20Hz–20kHz.

The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.

PCBs Are Very Compact in size 99x49mm And Made By JLCPCB Which Very Durable and High-Quality, And Available in Very Lovely Colors like Purple.



Contact Details:
Name: VIPIN KUMAR SAINI
Email: [email protected]
What'sApp: +91 8920599797 [Chat Only/No Calls]
Timing: 10AM to 6PM, Monday to Saturday