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PDF NAU8811 Data sheet ( Hoja de datos )
| Número de pieza | NAU8811 | |
| Descripción | Mono Audio Codec | |
| Fabricantes | Nuvoton Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NAU8811 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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NAU8811
Mono Audio Codec with SPI
emPowerAudio™
1. GENERAL DESCRIPTION
The NAU8811 is a cost effective and low power wideband MONO audio CODEC. It is designed for voice
telephony related applications. Functions include Automatic Level Control (ALC) with noise gate, PGA, standard
audio interface I2S, and PCM with time slot assignment. The device provides one differential microphone input
and one single ended auxiliary input (multi purpose). There are few variable gain control stages in the audio path.
It also includes Headphone (Headphone) line output and integrated BTL speaker driver.
The analog inputs have PGA on the front end, allowing dynamic range optimization with a wide range of input
sources. The microphone amplifiers have a programmable gain from -12dB to +35.25dB to handle both amplified
microphones. In addition to a digital high pass filter to remove DC offset voltages, the ADC also features voice
band digital filtering. Voice-band data is accepted by the audio interface (I2S). The DAC converter path includes
filtering and mixing, programmable-gain amplifiers (PGA), and soft muting. The digital interface SPI have
independent supply voltage to allow integration into multiple supply systems. The NAU8811 operates at supply
voltages from 2.5V to 3.6V, although the digital core can operate at voltage as low as 1.71V to save power.
The NAU8811 is specified for operation from -40C to +85C. AEC-Q100 & TS16949 compliant device is
available upon request.
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
Integrated BTL Speaker Driver 1W (8Ω / 5V)
Integrated Headset Driver 40mW (16Ω / 3.3V)
Analog I/O
Integrated programmable Microphone Amplifier
Integrated Line Input and Line Output
Integrated Audio Switches
Headphone / Speaker / Line Output selection
Microphone / Line Inputs selection
Interfaces
I2S digital interface PCM time slot assignment
SPI serial control Interface
emPowerAudio™
Datasheet Revision 2.5
Page 1 of 87
January 2015
1 page  
5. BLOCK DIAGRAM
VSSSPK
VSSD
VSSA
VDDSPK
VSSD
VDDA
NAU8811
CSb
SCLK
SDIO
ADCOUT
DACIN
FS
BCLK
emPowerAudio™
Datasheet Revision 2.5
Figure 2: NAU8811 General Block Diagram
Page 5 of 87
January 2015
5 Page 
NAU8811
9. ABSOLUTE MAXIMUM RATINGS
CONDITION
VDDA supply voltage
VDDSPK supply voltage
MOUTBST=0, SPKBST=0
MOUTBST=1, SPKBST=1
Digital Input Voltage range
Analog Input Voltage range
Industrial operating temperature
Storage temperature range
MIN
-0.3
-0.3
-0.3
VSSD – 0.3
VSSA – 0.3
-40
-65
MAX
+3.63
+3.63
+5.50
VDDD + 0.30
VDDA + 0.30
+85
+150
Units
V
V
V
V
V
0C
0C
CAUTION: Do not operate at or near the maximum ratings listed for extended period of time. Exposure to such
conditions may adversely influence product reliability and result in failures not covered by warranty. These
devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
10. OPERATING CONDITIONS
Condition
Analogue supplies range
Digital supply range
Speaker supply
Ground
1. VDDA must be ≥ VDDD
Symbol
VDDA
VDDD
VDDSPK
VSSD, VSSA,
VSSSPK
Min Value
2.50
1.71
2.50
Typical
Value
0
Max Value Units
3.60 V
3.60 V
5.50 V
V
emPowerAudio™
Datasheet Revision 2.5
Page 11 of 87
January 2015
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet NAU8811.PDF ] | |
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