ADAU1381BCPZ Analog Devices Inc, ADAU1381BCPZ Datasheet - Page 2

• Manufacturer Part Number: ADAU1381BCPZ
• Description: IC AUDIO CODEC STEREO LN 32LFCSP
• Manufacturer: Analog Devices Inc
• Type: Stereo Audior

Specifications of ADAU1381BCPZ

• Data Interface: Serial, SPI™
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 97 / 100
• Dynamic Range, Adcs / Dacs (db) Typ: 96.5 / 100
• Voltage - Supply, Analog: 1.8 V ~ 3.65 V
• Voltage - Supply, Digital: 1.63 V ~ 3.65 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, CSP Exposed Pad
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 3
• No. Of Output Channels: 3
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 100dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADAU1381
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications..................................................................................... 4
Absolute Maximum Ratings.......................................................... 14
Pin Configuration and Function Descriptions........................... 15
Typical Performance Characteristics ........................................... 17
System Block Diagrams ................................................................. 20
Theory of Operation ...................................................................... 24
Startup, Initialization, and Power ................................................. 25
Clocking and Sampling Rates ....................................................... 27
Record Signal Path.......................................................................... 30
Record Side Performance Specifications................................... 4
Output Side Performance Specifications................................... 6
Power Supply Specifications........................................................ 8
Typical Power Management Measurements ............................. 9
Digital Filters................................................................................. 9
Digital Input/Output Specifications......................................... 10
Digital Timing Specifications ................................................... 11
Thermal Resistance .................................................................... 14
ESD Caution................................................................................ 14
Power-Up Sequence ................................................................... 25
Clock Generation and Management........................................ 26
Enabling Digital Power to Functional Subsystems ................ 26
Setting Up the Sound Engine.................................................... 26
Power Reduction Modes............................................................ 26
Power-Down Sequence.............................................................. 26
Core Clock................................................................................... 27
Sampling Rates............................................................................ 27
PLL ............................................................................................... 28
Rev. B | Page 2 of 84
Playback Signal Path ...................................................................... 32
Control Ports................................................................................... 33
Serial Data Input/Output Ports .................................................... 38
General-Purpose Input/Outputs .................................................. 40
Sound Engine.................................................................................. 41
Applications Information .............................................................. 42
Control Register Map..................................................................... 43
Input Signal Path ........................................................................ 30
Analog-to-Digital Converters................................................... 31
Digital Dual-Band Automatic Level Control (ALC) ............. 31
Output Signal Paths ................................................................... 32
Digital-to-Analog Converters................................................... 32
Line Outputs ............................................................................... 32
Speaker Output........................................................................... 32
I
SPI Port ........................................................................................ 36
Memory and Register Access.................................................... 36
TDM Modes................................................................................ 38
Signal Processing........................................................................ 41
Processing Flow .......................................................................... 41
Programming.............................................................................. 41
Parameter Memory .................................................................... 41
Power Supply Bypass Capacitors.............................................. 42
GSM Noise Filter ........................................................................ 42
Grounding ................................................................................... 42
Speaker Driver Supply Trace (AVDD2) .................................. 42
Exposed Pad PCB Design ......................................................... 42
Clock Management, Internal Regulator, and PLL Control... 44
Record Path Configuration....................................................... 48
Serial Port Configuration .......................................................... 53
Audio Converter Configuration............................................... 58
Playback Path Configuration.................................................... 63
2
C Port ........................................................................................ 33