| Description |
The NAU8820 is a low power, high quality stereo CODEC designed to emPowerAudio™ for portable applications. In addition to precision 24-bit stereo ADCs and DACs, this device integrates a broad range of additional functions to simplify implementation of complete audio system solutions. The NAU8820 includes drivers for headphone, differential or stereo line outputs, and preamps for stereo differential microphones, significantly reducing external components.
Advanced on-chip digital signal processing includes a 5-band equalizer, a 3-D audio enhancer, a mixed-signal automatic level control for the microphone or line input through the ADC, and a digital limiter function for the playback path. Additional digital filtering options are available in the ADC path, to simplify implementation of specific application requirements such as ‘wind noise reduction’. The digital interface can operate as either a master or a slave. Additionally, an internal fractional PLL is available to generate accurate audio sample rate clocks for the CODEC derived from a wide range of commonly available system clock frequencies from 8 to 33MHz.
The NAU8820 operates with analog supply voltages from 2.5V to 3.6V, while the digital core can operate at 1.7V to conserve power. The auxiliary line outputs can operate using a 5V supply to increase speaker output power and drive a higher RMS signal to external audio components. Internal register controls enable flexible power saving modes by powering down sub-sections of the chip under software control. The NAU8820 is specified for operation from -40°C to +85°C, and is available with full automotive AEC-/Q100 & TS16949 qualification. It is packaged in a cost effective, space-saving 32-lead QFN package.
For additional information about our new NAU8820 Stereo Audio CODEC, please Contact Sales |
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