NAU8812YG Nuvoton Technology Corporation of America, NAU8812YG Datasheet

NAU8812YG

Manufacturer Part Number

NAU8812YG

Description

Manufacturer

Nuvoton Technology Corporation of America

Datasheet

1.NAU8812RG.pdf (109 pages)

Specifications of NAU8812YG

Case

QFN32

Notes

NEW

Date_code

11+

Current page: 1 of 109
Download datasheet (3Mb)

The NAU8812 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

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 (I

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. The NAU8812 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.

24-bit signal processing linear Audio CODEC



Analog I/O



Interfaces



emPowerAudio

Datasheet Revision 2.0

S, PCM with time slot assignment, and on-chip PLL. The device provides one differential microphone input and one

GENERAL DESCRIPTION

FEATURES

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 800mW (8Ω / 5V)

Integrated Headset Driver 40mW (16Ω / 3.3V)

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

SPI & 2-Wire serial control Interface (I

Read/Write capable)

S digital interface PCM time slot assignment

MICBIAS

™

MIC+

AUX

MIC-

Micophone

Microphone

Interface

Bias

Mixers

Stage

Input

Gain

CSb/GPIO

ADC

C style;

GPIO

PLL

Page 1 of 109

Notch Filter

ADC Filter

Volume

Control

HPF

Digital Audio Interface

Audio I/O

PCM

Mono Audio Codec with Speaker Driver

DAC Filter

Volume

Control

Limiter

Low Power, Low Voltage



Additional features



Applications



Analog Supply: 2.5V to 3.6V

Digital Supply: 1.71V to 3.6V

Nominal Operating Voltage: 3.3V

Programmable ALC

ADC Notch Filter

Programmable High Pass Filter

Digital A/D-D/A Passthrough

AEC-Q100 & TS16949 qualification

Industrial temperature: range: –40C to +85C

VoIP Telephones]

Conference speaker-phone

IP PBX

Mobile Telephone Hands-free Kits

Residential & Consumer Intercoms

Serial Control Interface

2-wire

S). The DAC converter path includes filtering

DAC

Digital I/O

SPI

Speaker

Volume

Output

Mixers

-1

Line Driver

Speaker

Driver

BTL

NAU8812

January 2011

emPowerAudio

SPK+

SPK-

AUX

™

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