OPA 541 Low Frequency Power Amplifier Module, 50W Audio Amp Board with Heat Sink, 20Hz-100kHz for Motor Drive, Signal Amplification, Audio Projects

Item Type: Low Frequency Power Amplifier ModuleMaterial: PCBModule Model: OPA 541Input Signal Form: Single endedModule Input Impedance: 10 K ohmsOperating Frequency: 20 HZ-100 KHZModule Supply Current: 5 AInput Current: 5 AInput Power: 50 W (MAXIMUM)Module Gain: 3.3 x-82 x, first stage amplification adjustable up to 25 x, second stage amplification is 3.3 xModule Specifications: Approx. 82 x 47 x 42 mm / 3.2 x 1.9 x 1.7 inModule Operating Temperature: -40℃~75℃Application Scope: Small signal amplification, audio signal amplification, motor drive, etc.Module Interface Type: 5.08 blue power card holder, SMA signal input and output.Package List：1 x Low Frequency Power Amplifier Module

• Accurate OPA541 Amplifier Circuit: Professional-grade operational amplifier delivers 20Hz-100kHz frequency response with 0.005% THD; Two-stage gain adjustment (3.3x-82x) accommodates various input signal levels
• Robust Thermal Management System: Extruded aluminium heat sink dissipates 50W maximum power continuously; Automatic thermal throttling protects components during overloads; PCB material withstands repeated thermal cycling
• Compact Professional Audio Method: 82x47 mm footprint fits inside instrument enclosures; Blue power terminals accept 4-6mm² cables for secure connections; SMA connectors ensure minimal signal loss at frequencies
• Versatile Signal Processing Module: Adjustable first-stage amplification (up to 25x) for microphone preamps; Fixed 3.3x second stage for line-level outputs; Handles both AC/DC coupled input signals; 5A supply current drives low-impedance loads
• Dependable Motor Control Interface: Provides clean PWM signal amplification for stepper drivers; Reduces electromagnetic interference in CNC systems; Stable current output maintains torques at low speeds