TDA1308 Stereo Headphone Audio Driver Module

TDA1308 Stereo Headphone Audio Driver Module is an integrated class-AB stereo headphone driver contained in a compact board layout, designed specifically for high-quality portable audio projects. This module utilizes the robust TDA1308 IC, which delivers excellent audio performance with a low total harmonic distortion and high signal-to-noise ratio. Consequently, it supplies clean, crisp amplification for standard headphones without introducing unwanted background hiss or audio artifacts. Furthermore, its wide power supply range and low power consumption make it ideal for battery-operated gadgets. Therefore, you can seamlessly integrate this module into DIY audio receivers, microcontrollers with DAC outputs, or custom portable media devices to achieve premium sound quality.

Key Features:

• High Signal-to-Noise Ratio: Boasts a high SNR alongside low total harmonic distortion (THD+N), which ensures pure audio output and excellent sonic fidelity.
• Short-Circuit Protection: Features robust internal circuitry designed to protect the output stages from accidental short circuits on the headphone jack.
• No Switch On/Off Clicks: Incorporates advanced click-and-pop suppression circuitry. As a result, it protects your hearing and your headphones during power cycles.
• Excellent Power Supply Ripple Rejection: Effectively filters out supply noise, allowing smooth operation even alongside noisy digital circuits.
• Compact Form Factor: The miniature module footprint easily fits into tight enclosures and highly integrated portable audio designs.

Technical Specifications:

• Supply Voltage (V_DD): 3.0 V to 7.0 V (Single supply) or ±1.5 V to ±3.5 V (Dual supply)
• Output Power: ≈ 80 mW per channel into a 32 Ω load
• Total Harmonic Distortion (THD+N): ≤ 0.03% typical
• Signal-to-Noise Ratio (SNR): ≈ 110 dB
• Channel Separation: ≥ 70 dB
• Operating Temperature Range: −40°C to +85°C

Mechanical Specifications:

• IC Driver Package: SOIC-8 (Surface Mount IC on board)
• Board Material: High-grade FR4 double-sided PCB
• Input/Output Connections: Through-hole solder pads for clear pin identification and wiring.
• Mounting Configuration: Breadboard-friendly design with standard 2.54 mm pitch headers.

Dimensions:

• PCB Length: ≈ 20.0 mm
• PCB Width: ≈ 20.0 mm
• Overall Height: ≈ 3.2 mm
• Weight: ≈ 2.0 g

Pinout and Wiring:

• VCC/VDD: Connect this pin to your positive DC power supply rail (3V to 7V).
• GND: Connect to the common system ground reference point.
• LIN (Left Input): Receives the left-channel unamplified audio signal from your source DAC or pre-amplifier.
• RIN (Right Input): Receives the right-channel unamplified audio signal from your source DAC or pre-amplifier.
• LOUT (Left Output): Connects directly to the left terminal of your headphones or external speakers.
• ROUT (Right Output): Connects directly to the right terminal of your headphones or external speakers.
• Wiring Note: However, keep the audio input wires as short as possible and use shielded cables to avoid picking up environmental electromagnetic noise.

Datasheet Reference:

• Download NXP TDA1308 Audio Driver Datasheet

Commonly Used in:

• Microcontroller Sound Projects: Amplifying low-power analog outputs from ESP32, Arduino, or STM32 development boards.
• Portable Media Players: Providing the primary drive stage for standard consumer headphones in DIY MP3 players.
• PC Sound Card Modifications: Serving as a high-performance replacement line-driver for customized desktop computer audio outputs.

Applications:

• Headphone Preamplification: Boosting standard line-level audio signals to drive high-impedance headphones comfortably.
• Wireless Audio Receivers: Serving as the final analog output driver stage in Bluetooth and Wi-Fi audio stream nodes.
• Radio Receivers: Driving clear audio signals from compact FM/AM tuner circuits directly into an earpiece.

Equivalent Models:

• PAM8403 Module: Another popular audio option, however, it acts as a Class-D speaker amplifier rather than a dedicated Class-AB headphone driver.
• LM386 Module: A widely used general-purpose mono audio amplifier, though it offers lower audio fidelity compared to the TDA1308.
• MAX97220: A modern Differential-Input DirectDrive headphone amplifier that provides a functional equivalent performance level.

Package Includes:

• 1 x TDA1308 Stereo Headphone Audio Driver Module