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Product Detailed Parameters
- Description：MONO CLASS-D AUDIO AMPS
- Series：-
- Mfr：Nuvoton Technology Corporation
- Package：Tray
- Type：Class D
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：2.9W x 1 @ 4Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：-
- Mounting Type：Surface Mount
- Supplier Device Package：16-QFN (3x3)
- Package / Case：16-WFQFN Exposed Pad
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The NAU82011YG is a mono high-efficiency filter-free Class-D audio amplifier capable of driving a 4Ω load with up to 2.9W output power at 5V supply. It features variable gain, low quiescent current (1.2mA at 3.6V), and fast start-up time of 4ms. The device supports single-ended or differential inputs, includes integrated image reject filters, click-and-pop suppression, and thermal/current protection. Operating voltage ranges from 2.5V to 5.5V, with an industrial temperature range of -40°C to +85°C.
Feature Summary
- High efficiency Class-D architecture with integrated image reject filter for superior EMI performance
- Low quiescent current consumption optimized for battery-driven portable applications
- Integrated click-and-pop suppression and fast start-up sequence
- Built-in thermal overload, short circuit, and under-voltage protection mechanisms
Applications
- Smartphones
- Tablet PCs
- Personal Navigation Devices
Procurement Notes
Verify the specific package material designation 'G' indicates a lead-free green QFN-16 component. Confirm the operating voltage range matches system requirements between 2.5V and 5.5V. Ensure PCB layout guidelines for low resistance traces are followed to maximize output power delivery to low impedance loads.
Selection Notes
Select this amplifier for portable devices requiring high output power without external output filtering. Consider the variable gain configuration via external input resistors. Evaluate thermal management needs given the 150°C shutdown threshold. Verify compatibility with single-ended or differential input signal sources.
Part Context
Manufactured by Nuvoton Technology Corporation, the NAU82011YG belongs to the Class-D audio amplifier family. It is designed specifically for mobile consumer electronics where space and power efficiency are critical constraints. The QFN-16 package facilitates compact board designs.
Replacement Considerations
NAU82011VG: Similar mono Class-D amplifier with comparable power output specifications.
FAQ
How is the gain of the NAU82011YG configured?
The gain is set using external input resistors. The formula is Gain = 300kΩ / R1, where R1 is the external resistor value.
What protection features are included in the NAU82011YG?
The device includes thermal overload protection (shutdown at 150°C), short circuit protection (threshold 2.0A), and supply under-voltage protection.
