Overview
The NAU88C22YG is a low-power, high-quality audio CODEC designed by Nuvoton Technology Corporation for portable and general-purpose audio applications. This device simplifies the implementation of complete audio system solutions by integrating advanced functions such as 24-bit stereo ADCs and DACs, drivers for speaker, headphone, differential or stereo line outputs, and preamps for stereo differential microphones. It also features a fractional PLL to generate any audio sample rate using a commonly available system clock ranging from 8MHz to 33MHz.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| ADC SNR (A-weighted) | 89dB @ 0dB gain | DAC SNR (A-weighted) | 89dB @ 0dB gain |
| ADC THD+N | -78dB @ 0dB gain | DAC THD+N | -84dB @ 20mW, RL=32ohm |
| Headset Driver | 40mW (16Ω / 3.3V) | BTL Speaker Driver | 1 W (8Ω / 5V) |
| Sample Rates | 8~192KHz | Audio Interface | I2S / PCM |
| Voltage Range (VDDC/B) | 1.65V ~ 3.6V | Voltage Range (VDDA) | 2.5V ~ 3.6V |
| Temperature Range | -40°C ~ 85°C | Package | QFN-32 (5x5mm) |
Key Features
- High-quality 24-bit stereo ADCs and DACs
- Integrated drivers for speaker, headphone, differential or stereo line outputs
- Preamplifiers for stereo differential microphones
- Fractional PLL for generating any audio sample rate using a system clock from 8MHz to 33MHz
- 5-band Graphic Equalizer
- Programmable Automatic Level Control (ALC) with a noise gate
- Programmable high-pass filter and ADC notch filter
- I2C control interface
- Low power consumption and high signal-to-noise ratio
Applications
- Wired/wireless telephony
- Security systems
- Mobile telephone hands-free kits
- Residential and consumer intercoms
- Smartphones, tablets, and laptops
- Wearables and virtual reality devices
- Cameras and other portable devices requiring high-quality audio
Q & A
- Q: What is the NAU88C22YG?
A: The NAU88C22YG is a low-power, high-quality audio CODEC designed for portable and general-purpose audio applications by Nuvoton Technology Corporation.
- Q: What are the key specifications of the NAU88C22YG?
A: Key specifications include an SNR of 89dB and THD+N of -78dB for the ADC, and an SNR of 89dB and THD+N of -84dB for the DAC. It also supports sample rates from 8~192KHz and operates within a voltage range of 1.65V ~ 3.6V (VDDC/B) and 2.5V ~ 3.6V (VDDA).
- Q: What are the integrated features of the NAU88C22YG?
A: The NAU88C22YG integrates drivers for speaker, headphone, differential or stereo line outputs, preamps for stereo differential microphones, a fractional PLL, a 5-band Graphic Equalizer, programmable ALC, and high-pass filter.
- Q: What is the package type of the NAU88C22YG?
A: The NAU88C22YG comes in a compact QFN-32 (5x5mm) package.
- Q: What are the typical applications of the NAU88C22YG?
A: Typical applications include wired/wireless telephony, security systems, mobile telephone hands-free kits, residential and consumer intercoms, and various portable devices like smartphones and tablets.
- Q: What is the operating temperature range of the NAU88C22YG?
A: The NAU88C22YG operates reliably over a wide temperature range of -40°C to 85°C).
- Q: Does the NAU88C22YG support multiple audio formats?
A: Yes, the NAU88C22YG supports multiple audio formats including I2S, PCM, and TDM).
- Q: How does the NAU88C22YG manage power consumption?
A: The NAU88C22YG is designed to reduce power consumption while producing high-quality audio, making it suitable for battery-operated devices).
- Q: What control interface does the NAU88C22YG use?
A: The NAU88C22YG uses an I2C control interface).
- Q: Is the NAU88C22YG RoHS compliant?
A: Yes, the NAU88C22YG is RoHS compliant).
