TDA7498 Dual 100W Class-D Car Audio Amplifier Board | 12V-24V DC 110dB SNR High-Power Stereo Module

Key Advantages

1. Dual 100W High-Power Output (TDA7498 Chip)
   • Delivers 100W RMS per channel (4Ω load) at VCC=32V, suitable for driving medium-to-high impedance car speakers or aftermarket subwoofers with clarity and minimal distortion.
2. Ultra-Low Noise & Wide Frequency Response
   • 110dB SNR ensures silent operation even at low volumes, while 18Hz–100kHz frequency range reproduces deep bass and crisp highs for HiFi-grade audio in vehicles.
3. Flexible Power Supply (DC14-34V)
   • Compatible with 12V/24V car batteries or adjustable DC power supplies, enabling use in passenger cars, trucks, boats, or portable audio setups.
4. High Efficiency (85%) & Compact Design (96x64x25mm)
   • Class-D topology reduces heat generation, allowing a small form factor without external heatsinks. Ideal for space-constrained car door panels or dashboard installations.
5. Adjustable Gain (4 Levels: 12.6dB–33.1dB)
   • Tailor input sensitivity to match source devices (e.g., head units, DACs, or smartphones), preventing clipping and optimizing signal-to-noise ratio.
6. Advanced Protection Features
   • Over-temperature, short-circuit, and DC offset protection safeguard the amplifier and connected speakers from damage during fault conditions.
   • Standby/mute modes enable remote control integration for power-saving or silent startup in automotive systems.
7. Differential Input Design
   • Rejects common-mode noise from unbalanced audio sources, improving clarity in noisy environments (e.g., engine vibrations or RF interference).

Technical Specifications

• Output Impedance: 4Ω–8Ω (per channel)
• THD+N: 0.05% (1W, 1kHz)
• Switching Frequency: 360kHz
• Operating Temperature: 0°C–70°C (ambient)
• Storage Temperature: -40°C–150°C
• Junction-to-Case Thermal Resistance: ≤3.0°C/W

Target Applications

1. Car Audio Upgrades
   • Replace factory amplifiers in sedans, SUVs, or trucks to drive aftermarket speakers/subwoofers with higher power and fidelity.
2. Motorcycle/Boat Audio Systems
   • Compact size and rugged design suit vibration-prone environments, delivering loud, clear sound for outdoor adventures.
3. DIY Active Speaker Projects
   • Pair with full-range drivers or passive crossovers to build high-performance bookshelf speakers or studio monitors.
4. Commercial Vehicle Audio
   • Install in buses, taxis, or delivery vans for background music or driver alert systems, leveraging wide voltage tolerance for stable operation.
5. Portable PA/Event Audio
   • Combine with 12V/24V battery packs to power small-scale public address systems for outdoor events or street performances.
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