NAU8501YG TR

ADCs/DACs - Special Purpose Overview

The NAU8501YG TR is a low-power, high-quality stereo audio input system designed for portable applications. It integrates precision 24-bit stereo delta-sigma ADCs with differential microphone inputs and separate line inputs. The device features wide-range programmable amplifiers, an analog bypass/side tone output, and advanced on-chip digital signal processing including a limiter/ALC, 5-band equalizer, notch filter, and high-pass filter. An internal Fractional-N PLL generates sample rate clocks from system clocks between 8MHz and 33MHz. It operates with analog supplies of 2.5V to 3.6V and digital core supplies as low as 1.7V.

ADCs/DACs - Special Purpose Feature Summary

• 24-bit Stereo Audio ADC with 90dB SNR and -80dB THD+N
• Integrated DSP: 5-band EQ, ALC/Limiter, Notch Filter, High-Pass Filter
• Internal Fractional-N PLL supporting 8MHz to 33MHz reference clocks
• Stereo differential microphone inputs with wide-range PGA (+35.25dB to -12dB)

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 'TR' corresponds to the Tape & Reel packaging format when sourcing components. Confirm that the analog supply voltage (VDDA) remains within the 2.5V to 3.6V range and the digital core supply (VDDC) stays between 1.7V and 3.6V during operation to ensure compliance with absolute maximum ratings.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring integrated microphone preamplification and digital signal processing in a compact form factor. Ensure the host system provides a master clock between 8MHz and 33MHz if utilizing the internal PLL for sample rate generation. Verify compatibility with I2S or PCM audio interfaces and 2-wire/3-wire/4-wire control protocols.

ADCs/DACs - Special Purpose Part Context

The NAU8501 is part of Nuvoton's audio input system portfolio, specifically engineered for portable electronics. The 'NAU8501YG' designation indicates the Pb-Free 32-QFN package variant, while 'TR' specifies the reel packaging configuration. This device consolidates analog front-end and digital processing functions to reduce external component count.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

ADCs/DACs - Special Purpose FAQ

What is the operating temperature range for the NAU8501?

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

Can the NAU8501 generate its own audio sample rate clock?

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

What types of microphone biasing does the NAU8501 support?

It features a programmable low-noise MICBIAS output suitable for both conventional electret (ECM) microphones and newer MEMS all-silicon type microphones.