NAU8812EVB Nuvoton Technology Corporation of America, NAU8812EVB Datasheet - Page 5

• Manufacturer Part Number: NAU8812EVB
• Description: BOARD EVAL FOR NAU8812
• Manufacturer: Nuvoton Technology Corporation of America
• Series: emPowerAudio™r

Specifications of NAU8812EVB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
emPowerAudio
Datasheet Revision 2.0
12.1.
12.2.
12.3.
12.4.
12.5.
12.6.
12.7.
Table of Contents
12.1.1.
12.1.2.
12.1.3.
12.3.1.
12.3.2.
12.3.3.
12.4.1.
12.4.2.
12.4.3.
12.4.4.
12.4.5.
12.4.6.
12.5.4.
12.5.5.
12.5.6.
12.6.1.
12.6.2.
12.6.3.
12.7.1.
GENERAL DESCRIPTION .................................................................................................................................. 1
FEATURES ......................................................................................................................................................... 1
PIN CONFIGURATION ....................................................................................................................................... 2
PIN DESCRIPTION ............................................................................................................................................. 3
BLOCK DIAGRAM .............................................................................................................................................. 4
TABLE OF CONTENTS ...................................................................................................................................... 5
LIST OF FIGURES .............................................................................................................................................. 9
LIST OF TABLES .............................................................................................................................................. 11
ABSOLUTE MAXIMUM RATINGS .................................................................................................................... 12
OPERATING CONDITIONS .............................................................................................................................. 12
ELECTRICAL CHARACTERISTICS ................................................................................................................. 13
FUNCTIONAL DESCRIPTION .......................................................................................................................... 16
12.1.2.1.
12.1.2.2.
12.1.2.3.
12.4.1.1.
12.4.1.2.
INPUT PATH .............................................................................................................................................. 16
MICROPHONE BIASING ........................................................................................................................... 22
ADC DIGITAL FILTER BLOCK .................................................................................................................. 24
PROGRAMMABLE GAIN AMPLIFIER (PGA) ............................................................................................ 26
DAC DIGITAL FILTER BLOCK .................................................................................................................. 33
ANALOG OUTPUTS .................................................................................................................................. 36
GENERAL PURPOSE I/O .......................................................................................................................... 39
™
The Single Ended Auxiliary Input (AUX) ............................................................................................. 16
The differential microphone input (MIC- & MIC+ pins) ........................................................................ 18
PGA Boost Stage ................................................................................................................................ 20
Programmable High Pass Filter (HPF) ................................................................................................ 25
Programmable Notch Filter (NF) ......................................................................................................... 25
Digital ADC Gain Control .................................................................................................................... 26
Automatic level control (ALC) .............................................................................................................. 26
Peak Limiter Mode .............................................................................................................................. 30
Attack Time ......................................................................................................................................... 31
Decay Times ....................................................................................................................................... 31
Noise gate (normal mode only) ........................................................................................................... 31
Zero Crossing...................................................................................................................................... 32
Hi-Fi DAC De-Emphasis and Gain Control ......................................................................................... 34
Digital DAC Output Peak Limiter ......................................................................................................... 35
Volume Boost ...................................................................................................................................... 35
Speaker Mixer Outputs ....................................................................................................................... 36
MONO Mixer Output ........................................................................................................................... 37
Unused Analog I/O .............................................................................................................................. 38
Slow Timer Clock ................................................................................................................................ 40
Positive Microphone Input (MIC+)............................................................................................... 19
Negative Microphone Input (MIC-) .............................................................................................. 19
PGA Gain Control ....................................................................................................................... 20
Normal Mode .............................................................................................................................. 29
ALC Hold Time (Normal mode Only) .......................................................................................... 29
Page 5 of 109
NAU8812
January 2011