NAU88C10
emPowerAudio
™
Datasheet Revision 0.4 Page 1 of 103 April 21, 2016
Mono Audio Codec with 2-wire Interface Control Interface
emPowerAudio
™
1. GENERAL DESCRIPTION
The NAU88C10 is a cost effective low power wideband Monophonic audio CODEC. It is suitable for a wide range
of audio applications, including voice telephony. Supported functions include a 5-band Graphic Equalizer,
Automatic Level Control (ALC) with noise gate, PGA, standard I2S or PCM audio interface, optional PCM time
slot assignment, and a full fractional-N on-chip PLL. This device includes one differential microphone input, and
multiple variable gain control stages in the audio paths. Both a Mono headset/line-level output and a high power
differential BTL speaker driver output are provided.
The analog input path includes a PGA enabling dynamic range optimization of a wide range of input sources with
programmable gain from -12dB to +35.25dB. In addition to a digital high pass filter to remove DC offset voltages,
the ADC also features programmable voice band digital filtering. Audio data is communicated via the audio
interface that supports multiple I2S and PCM data formats. The DAC converter path includes filtering, mixing,
programmable-gain amplifiers, and soft muting. The 2-Wire digital control interface has an independent supply
voltage to enable easy integration into multiple supply voltage systems. The NAU88C10 operates at supply
voltages from 2.5V to 3.6V, and the digital core can operate at a voltage as low as 1.71V to conserve power.
2. FEATURES
24-bit signal processing linear Audio CODEC
Audio DAC: 93dB SNR and -84dB THD
Audio ADC: 91dB SNR and -79dB THD
Support variable sample rates from 8 - 48kHz
Analog I/O
Integrated programmable Microphone Amplifier
Integrated BTL Speaker Driver 1 W (8Ω / 5V)
Earphone / Speaker / Line-Output Mixing / Routing
Integrated Headset Driver 40mW (16Ω / 3.3V)
Low Noise bias supply voltage for microphone
On-chip full fractional-N PLL
Interfaces
I
2
S digital interface PCM time slot assignment
2-Wire serial control Interface (I
2
C style; /Write capable)
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