AU3108NASOP16P
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10W, 8V to 14.5V, Inductor Free, Stereo Class-D Speaker Amplifier
Product details
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Parameters
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Characteristics
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Package
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Description
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Input Type: Analog Input
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Architecture: Closed-loop Class D
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Number of Channels: Stereo 2 Channels
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Operating Voltage Range: 8V to 14.5V
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Output Power: 2 × 10W
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THD + N
0.03%
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Control Interface: GPIO
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Operating Temperature Range (°C): -40 to 85
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Power Supply Range: 8V to 14.5V
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2 × 10.5W @12V, 6Ω, THD+N = 1%
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2 × 14W @12V, 4Ω, THD+N = 1%
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1 × 20W @12V, 4Ω, THD+N = 1%
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12V, 6Ω, 5W, 1kHz
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• BD: THD+N < 0.05%
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• 1SPW: THD+N < 0.1%
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• BD Mode
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20dB Gain（AU3107L）
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26dB Gain (AU3107M)
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32dB Gain（AU3107N）
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36dB Gain（AU3107P）
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• 1SPW Mode
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20dB Gain（AU3108L）
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26dB Gain(AU3108M)
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32dB Gain（AU3108N）
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36dB Gain（AU3108P）
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Low Rdson: 140mΩ
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Overcurrent Protection Threshold
4A (typ)
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Supports Pop Noise Suppression
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EMC: Supports Spread Spectrum and Two-Channel Phase Shifting
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Low BOM Cost
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Output filtering without inductors
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When operating in inductor-less mode, it can pass the EMC standards EN55013 and EN55022
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No external heatsink required
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Flexible Audio Solution
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Single-ended or differential analog inputs
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Gain
26dB (20/32/36)
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Integrated Protection and Automatic Recovery
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Pin-to-pin, pin-to-ground, and pin-to-power short-circuit protection
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Thermal protection, undervoltage protection, and overvoltage protection
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DC Speaker Protection
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Package
SOP16PP
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SSOP16P: 9.9mm× 3.9mm
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The AU3107/AU3108 is a 10W-per-channel, high-efficiency, low static current Class D stereo audio amplifier capable of driving stereo speakers with a load as low as 3.2Ω. The AU3107 operates in BD mode to achieve better THD+N performance, while the AU3108 supports 1SPW mode for improved thermal performance. The operating voltage range for both models is 8V to 14.5V. In terms of EMC performance, the AU3107/AU3108 supports optimized spread-spectrum functionality and phase shifting between the two channels. This allows the use of inexpensive ferrite bead filters while meeting EMC test standards, effectively reducing system costs. To further simplify the design process, the AU3107/AU3108 integrates essential protection functions, including undervoltage, overvoltage, overcurrent, short-circuit, overtemperature, and DC speaker protection. All these protections come with automatic recovery functionality.
