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语音编解码芯片 NAU8810手册资料V2.8
资料介绍
NAU8810是经典的语音编解码芯片，成本也很低，广泛应用于音频领域。
部分文件列表
| 文件名 | 大小 |
| 1575685852NAU8810资料手册V2.8_.pdf | 2M |
部分页面预览
（完整内容请下载后查看）NAU8810
Differential/Mono Audio Codec with 2-wire Interface Control Interface
emPowerAudio™
1. GENERAL DESCRIPTION
The NAU8810 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, and 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 NAU88U10 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.
The NAU8810 is specified for operation from -40C to +85C, and is available with automotive AEC-Q100
qualification. Please refer to ordering information for AEC-Q100 compliance part number.
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
I2S digital interface PCM time slot assignment
2-Wire serial control Interface (I2C style; /Write capable)
emPowerAudio™
Datasheet Revision 2.8
Page 1 of 102
March 1, 2017
NAU8810
Low Power, Low Voltage
Analog Supply: 2.5V to 3.6V
Digital Supply: 1.71V to 3.6V
Nominal Operating Voltage: 3.3V
Additional features
5-band Graphic Equalizer
Programmable ALC
ADC Notch Filter
Programmable High Pass Filter
Digital ADC/DAC Passthrough
Mono data output on both channels
Automotive AEC-Q100 grade 3 & TS16949 qualification, tested to a higher reliability standard
Temperature: –40C to +85C
Applications
All types of wired/wireless telephony
Security Systems
Mobile Telephone Hands-free Kits
Residential & Consumer Intercoms
ADC Filter
Volume
Control
HPF
MOUT
DAC Filter
Volume
Control
Input
Mixers &
Gain
MIC-
Microphone
Interface
Output
Mixers
ADC
DAC
MIC+
Stage
Notch
Limiter
SPKOUT+
SPKOUT-
Filter
-1
Microphone
Bias
Digital Audio Interface
Control IF
MICBIAS
I2S
PCM
2-wire
Audio I/O
Digital I/O
emPowerAudio™
Datasheet Revision 2.8
Page 2 of 102
March 1, 2017
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