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NAU8500 PDF даташит

Спецификация NAU8500 изготовлена ​​​​«nuvoton» и имеет функцию, называемую «24-bit Mono Audio ADC».

Детали детали

Номер произв NAU8500
Описание 24-bit Mono Audio ADC
Производители nuvoton
логотип nuvoton логотип 

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NAU8500 Даташит, Описание, Даташиты
NAU8500
1. GENERAL DESCRIPTION
24-bit Mono Audio ADC with 2-wire Interface Control
emPowerAudio
NAU8500 is a cost effective and low power wideband MONO audio ADC. This device integrates a broad range of
additional functions to simplify the implementation of complete audio systems. Functions include Automatic Level
Control (ALC) with noise gate, PGA, standard audio interface I2S, PCM with time slot assignment, and on-chip
PLL. The device provides one differential microphone input and few variable gain control stages in the audio path.
The analog inputs have PGA on the front end, allowing dynamic range optimization with a wide range of input
sources. In addition to a digital high pass filter to remove DC offset voltages, the ADC also features voice band
digital filtering. NAU8500 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 NAU8500 is specified for operation from -40°C to +85°C, and is
available with full automotive AEC-Q100 and TS16949 qualification. It is packaged in cost effective, space-
efficient 20- lead QFN package.
2. FEATURES
24-bit signal processing linear Audio ADC
Audio ADC: 91dB SNR and -80dB THD
Support variable sample rates from 8kHz - 48kHz
Analog I/O
Integrated programmable Microphone Amplifier
Low Noise bias supplied for microphone
On-chip PLL
Interfaces
I2S digital interface PCM time slot assignment
2-Wire serial control Interface (I2C style; /Write capable)
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
AEC-Q100 & TS16949 qualification
Industrial temperature: range: 40C to +85C
Applications
Audio Recording devices
Security Systems
Video and Still Cameras
Enhanced Audio inputs for SOC products
Gaming Systems
emPowerAudio
Datasheet Revision 1.7
Page 1 of 88
June, 2014









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NAU8500 Даташит, Описание, Даташиты
3. PIN CONFIGURATION
NAU8500
emPowerAudio
Datasheet Revision 1.7
Figure 1: 20-Pin QFN Package
Page 2 of 88
June, 2014









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NAU8500 Даташит, Описание, Даташиты
NAU8500
4. PIN DESCRIPTION
Pin Name
MICBIAS
VDDA
VSSA
VDDD
VSSD
ADCOUT
VSSD
FS
BCLK
MCLK
SCLK
SDIO
NC
NC
VSSA
NC
VDDA
VREF
MIC-
MIC+
20-Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Functionality
Microphone Bias
Analog Supply
Analog Ground
Digital Supply Core
Digital Ground
Digital Audio Data Output
Digital Ground
Frame Sync
Bit Clock
Master Clock
2-Wire Serial Clock
2-Wire I/O
No Connect
No Connect
Analog Ground
No Connect
Analog Supply
Decoupling internal analog mid supply reference
vMoicltraogpehone Negative Input
Microphone Positive Input
Table 1: Pin Description
A/D Pin Type
AO
AI
AO
DI
DO
DO
DO
D I/O
D I/O
DI
DI
DO
NC NC
NC NC
AI
NC NC
AI
AO
AI
AI
Notes
1. The 20-QFN package includes a bulk ground connection pad on the underside of the chip. This bulk ground
should be thermally tied to the PCB, and electrically tied to the analog ground.
2. Unused analog input pins should be left as no-connection.
3. Under all condition when digital pins are not used they should be tied to ground.
emPowerAudio
Datasheet Revision 1.7
Page 3 of 88
June, 2014










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