Audio Power Amplifiers |
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From immersive audio to high-frequency tone generation, explore high-performance Class-D amplifiers and piezo drivers designed to deliver superior-fidelity sound across a wide range of applications.
Our Class-D, G, H audio amplifier solutions are designed to maximize operating efficiency, especially for battery-driven applications ensuring extended play hours while delivering high-quality, crystal-clear sound. Optimized for space-constrained designs, Diodes' patented filter-less design with low electromagnetic interference (EMI) architecture achieves efficiencies up to 92%.
Choose from a versatile selection of mono and stereo speaker drivers for both analog-input and digital-input designs. With output power ranging from 3W to 50W+, and typical Total Harmonic Distortion plus Noise (THD+N) less than 0.1%, Diodes Incorporated’s diverse offerings can meet varied design needs from wearables to home audio.
Complimenting this lineup, our piezo sounder driver family includes solutions with integrated boost converters and charge pump architectures enabling higher sound pressure levels (SPL) from compact transducers. Leverage our piezo sounder driver line up and build robust solutions with higher SPL and flexible BOM.
High Fidelity and Efficiency:
Delivering from 1W to 40W per channel, our analog input Class-D amplifiers offer exceptional audio clarity and efficiency. With ultra-low THD+N and EMI, and integrated features like non-clipping power limit, thermal foldback and spread spectrum modulation they’re ideal for high-fidelity consumer and industrial applications.
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Versatile Sound Quality:
With integrated EQ, dynamic range boost (DRB), tone tuner, dynamic range control (DRC), and automatic gain limiting (AGL), Diodes’ Digital input Amplifiers ensure crystal-clear audio at any volume. Achieve seamless integration into any audio system using I²S, TDM, or I²C support. Our Class-H architecture boosts efficiency and reduces heat, ideal for compact and battery-powered designs.
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Compact and Efficient Tone Generation:
Diodes Incorporated’s piezo sounder driver line up featuring the new PAM series ICs that deliver, compact and high SPL solutions that support up to 40 Vpp output operating from 1.5-5.5V. Our tiny QFN/MSOP packages with less than 1uA shutdown current can maximize sound pressure while minimizing board space.
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- 8~96kHz sample rate
- 24-bits digital serial input interface (industry compliant)
- High-quality audio processors: EQ, DRC, AGL, DRB, 3D support
- Extremely low THD+N (0.02%) and noise (<37μVRMS)
- >90% efficiency and class-H support
- Mono 4W class-G audio power amplifier
- 86% efficiency at 1W into 8Ω Rl
- Battery-tracking automatic gain control (AGC)
- Auto-recovery short-circuit protection
- Package: W-QFN2030-12
- Stereo 4W class-D audio power amplifier
- 90% efficiency at 3W into 4Ω Rl
- Non-clip power-limit and automatic gain control (AGC)
- Spread spectrum and active edge rate control
- Package: U-QFN4040-20 and U-QFN3030-20
- Vin(V) - 1.8V to 5.5V
- Max VOUT - 22Vpp / 31Vpp
- <1μA shutdown current
- Automatic shutdown
- Package: QFN2020-12 (2.0 x 2.0mm)
- 60mW stereo headphone driver without DC blocking cap
- Low THD+N (0.03%) and low IQ (4mA)
- Package: U-QFN3030-16 (Standard)
