NAU8501YG

ADCs/DACs - Special Purpose Overview

The NAU8501YG is a stereo audio ADC in a 32-QFN package. It features 24-bit resolution with 90dB SNR and -80dB THD. The device includes differential microphone inputs with programmable gain amplifiers (PGA) ranging from -12dB to +35.25dB, plus stereo line inputs and outputs. Integrated DSP provides ALC, limiter, 5-band EQ, notch filter, and high-pass filter. It supports I2S/PCM interfaces and an internal Fractional-N PLL for clock generation. Operating voltages are 1.7V–3.6V for digital core and 2.5V–3.6V for analog supplies.

ADCs/DACs - Special Purpose Feature Summary

• 24-bit Stereo ADC with 90dB SNR and -80dB THD
• Integrated DSP: ALC, Limiter, 5-Band EQ, Notch Filter, HPF
• Programmable Gain Amplifiers (-12dB to +35.25dB) for Mic Inputs
• Internal Fractional-N PLL supporting 8MHz-33MHz system clocks

ADCs/DACs - Special Purpose Applications

• Audio Recording Devices
• Security Systems
• Video and Still Cameras
• Enhanced Audio Inputs for SOC Products
• Gaming Systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet revision. Confirm that the 'YG' designation corresponds to the standard Pb-Free 32-QFN package variant. Ensure compatibility with required supply voltage levels (VDDA vs VDDC) during system design validation.

ADCs/DACs - Special Purpose Selection Notes

Select this component for portable applications requiring low power consumption and high-fidelity audio capture. The integrated DSP reduces host processor load by handling noise reduction and level control. Verify that the available system clock frequency falls within the 8MHz to 33MHz range for optimal PLL performance.

ADCs/DACs - Special Purpose Part Context

The NAU8501 is part of Nuvoton's specialized audio input systems designed for portable electronics. It combines high-performance analog-to-digital conversion with extensive on-chip signal processing capabilities, simplifying the implementation of complete audio subsystems in compact form factors.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Consult the manufacturer's official documentation for potential cross-reference options or updated product family members.

ADCs/DACs - Special Purpose FAQ

What is the operating temperature range?

The NAU8501YG is specified for operation from -40°C to +85°C.

Can the device generate its own sample rate clock?

Yes, it includes an internal Fractional-N PLL that can generate accurate audio sample rates derived from any available system clock between 8MHz and 33MHz.

What types of microphone biasing are supported?

The device provides a programmable low-noise MICBIAS output suitable for both conventional electret (ECM) microphones and newer MEMS silicon microphones.