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NAU88C14 PDF даташит

Спецификация NAU88C14 изготовлена ​​​​«nuvoton» и имеет функцию, называемую «Mono Audio Codec».

Детали детали

Номер произв NAU88C14
Описание Mono Audio Codec
Производители nuvoton
логотип nuvoton логотип 

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NAU88C14 Даташит, Описание, Даташиты
NAU88C14
1. GENERAL DESCRIPTION
Mono Audio Codec with Speaker Driver and Equalizer
emPowerAudio
NAU88C14 is a cost effective and low power wideband MONO audio CODEC. It is designed for voice telephony
related applications. Functions include 5-band Graphic Equalizer, 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 one single ended auxiliary input (multi purpose). There are few variable gain
control stages in the audio path. It also includes MONO 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 interfaces, 2-Wire or SPI,
have independent supply voltage to allow integration into multiple supply systems. NAU88C14 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 NAU88C14 is specified for operation from -40°C to +85°C.
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 2.5 - 48kHz
Integrated BTL Speaker Driver 1 W (/ 5V)
Integrated Headset Driver 40mW (16Ω / 3.3V)
Analog I/O
Integrated programmable Microphone Amplifier
Integrated Line Input and Line Output
Earphone / Speaker / Line Output selection
Microphone / Line Inputs selection
Low Noise bias supplied for microphone
On-chip PLL
Interfaces
I2S digital interface PCM time slot assignment
SPI & 2-Wire serial control Interface (I2C style; /Write capable)
emPowerAudio
Datasheet Revision 2.8
Page 1 of 108
November 2015









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NAU88C14 Даташит, Описание, Даташиты
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 A/D-D/A Passthrough
Industrial temperature: range: 40C to +85C
Applications
VoIP Telephones]
Conference speaker-phone
IP PBX
Mobile Telephone Hands-free Kits
Residential & Consumer Intercoms
NAU88C14
emPowerAudio
Datasheet Revision 2.8
Page 2 of 108
November 2015









No Preview Available !

NAU88C14 Даташит, Описание, Даташиты
NAU88C14
AUX
MIC-
MIC+
MICBIAS
Microphone
Interface
Input
Mixers
&
Gain
Stage
Micophone
Bias
ADC
PLL
GPIO
ADC Filter
Volume
Control
HPF
Notch Filter
DAC Filter
Volume
Control
Limiter
DAC
Line Driver
Output
Mixers
&
Speaker
Volume
-1
BTL
Speaker
Driver
AUX
SPK+
SPK-
EQUALIZER
Digital Audio Interface
I2S PCM
Serial Control Interface
2-wire
SPI
CSb/GPIO
Audio I/O
Digital I/O
3. PIN CONFIGURATION
MICBIAS
VDDA
VSSA
VDDC
VDDB
VSSD
1
2
3
4
5
6
NAU8814
MONO AUDIO
CODEC
QFN 24-Pin
18 VSSSPK
17 SPKOUT +
16 MOUT
15 MODE
14 SDIN
13 SCLK
Figure 1: 24-Pin QFN Package
emPowerAudio
Datasheet Revision 2.8
Page 3 of 108
November 2015










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