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MAX98089ETN+
Audio Codec with FlexSound Processor
AVAILABLE
EVALUATION KIT AVAILABLE
Low-Power, Stereo Audio Codec
with FlexSound Technology
Simplified Block Diagram
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to /MAX98089.related.FlexSound is a trademark of Maxim Integrated Products, Inc.
General Description
The MAX98089 is a full-featured audio codec whose high performance and low power consumption make it ideal for portable applications.
Class D speaker amplifiers provide efficient amplification for two speakers. Low radiated emissions enable com-pletely filterless operation. Integrated bypass switches optionally connect an external amplifier to the transducer when the Class D amplifiers are disabled.
The IC features a stereo Class H headphone amplifier that utilizes a dual-mode charge pump to maximize effi-ciency while outputting a ground referenced signal that does not require output coupling capacitors.
The IC also features a mono differential amplifier that can also be configured as a stereo line output.
Two differential analog microphone inputs are available as well as support for two PDM digital microphones. Integrated switches allow for an additional microphone input as well as microphone signals to be routed out to external devices. Two flexible single-ended or differential line inputs may be connected to an FM radio or other sources.
Integrated FlexSoundK technology improves loudspeak-er performance by optimizing the signal level and fre-quency response while limiting the maximum distortion and power at the output to prevent speaker damage. Automatic gain control (AGC) and a noise gate optimize the signal level of microphone input signals to make best use of the ADC dynamic range.
The device is fully specified over the -40NC to +85NC extended temperature range.
Features
S 5.6mW Power Comsumption (DAC to HP at 97dB DR)
S 101dB DR Stereo DAC (8kHz < fS < 96kHz)
S 93dB DR Stereo ADC (8kHz < fS < 96kHz)
S Stereo Low EMI Class D Amplifiers 1.7W/Channel (8I, VSPK_VDD = 5.0V) 2.9W/Channel (4I, VSPK_VDD = 5.0V)
S Efficient Class H Headphone Amplifier
S Differential Receiver Amplifier/Stereo Line Outputs
S 2 Stereo Single-Ended/Mono Differential Line Inputs
S 3 Differential Microphone Inputs
S FlexSound Technology 5-Band Parametric EQ Automatic Level Control (ALC) Excursion Limiter Speaker Power Limiter Speaker Distortion Limiter Microphone Automatic Gain Control and Noise Gate
S Dual I2S/PCM/TDM Digital Audio Interfaces
S Asynchronous Digital Mixing
S Supports Master Clock Frequencies from 10MHz to 60MHz
S RF Immune Analog Inputs and Outputs
S Extensive Click-and-Pop Reduction Circuitry
S Available in 63-Bump WLP Package (3.80mm x 3.30mm, 0.4mm Pitch) and 56-Pin TQFN Package (7mm x 7mm x 0.75mm)
DIGITAL MICROPHONE
INPUT
LINEIN A1
LINEIN A2
LINEIN B1
LINEIN B2
DAC
DAC
MIX
RECEIVER/LINEOUT AMPS
SPEAKER AMP
SPEAKER AMP
HEADPHONE AMP
HEADPHONE AMP
ADC
ADC
MIX
FLEXSOUND TECHNOLOGY• 5-BAND PARAMETRIC EQ
• AUTOMATIC LEVEL CONTROL
• LOUDSPEAKER PROCESSING
• EXCURSION LIMITER
• THD LIMITER
• POWER LIMITER
• MICROPHONE PROCESSING
• AUTOMATIC GAIN CONTROL
• NOISE GATE
• ASYNCHRONOUS DIGITAL MIXING
I2C
CONTROL
I2S/PCM
DIGITAL
AUDIO
INTERFACE
I2S/PCM
MAX98089
DIGITAL
AUDIO
INTERFACE
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
TABLE OF CONTENTS
General Description ............................................................................1
Features .....................................................................................1
Simplified Block Diagram........................................................................1
Functional Diagram ............................................................................5
Absolute Maximum Ratings ......................................................................6
Electrical Characteristics ........................................................................6
Digital Input/Output Characteristics...............................................................19
Input Clock Characteristics .....................................................................21
Audio Interface Timing Characteristics ............................................................22
Digital Microphone Timing Characterstics..........................................................23
I2C Timing Characteristics......................................................................24
Power Consumption...........................................................................25
Typical Operating Characteristics ................................................................28
Microphone to ADC..........................................................................28
Line to ADC................................................................................32
Line-In Pin Direct to ADC .....................................................................33
Digital Loopback............................................................................33
Analog Loopback ...........................................................................34
DAC to Receiver ............................................................................35
Line to Receiver ............................................................................37
DAC-to-Line Output .........................................................................38
Line-to-Line Output..........................................................................38
DAC to Speaker.............................................................................39
Line to Speaker.............................................................................44
DAC to Headphone..........................................................................45
Line to Headphone ..........................................................................52
Speaker Bypass Switch ......................................................................54
Pin Configuration .............................................................................55
Pin Description...............................................................................57
Detailed Description...........................................................................60
I2C Slave Address...........................................................................61
Registers..................................................................................61
Power Management .........................................................................67
Microphone Inputs ..........................................................................69
Line Inputs.................................................................................71
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ADC Input Mixers ...........................................................................72
Record Path Signal Processing.................................................................73
Microphone AGC.........................................................................73
Noise Gate..............................................................................73
ADC Record Level Control ....................................................................76
Sidetone ..................................................................................77
Digital Audio Interfaces.......................................................................78
Clock Control...............................................................................85
Sample Rate Converter.......................................................................88
Passband Filtering...........................................................................89
Playback Path Signal Processing ...............................................................92
Automatic Level Control....................................................................92
Parametric Equalizer ......................................................................93
Playback Level Control .......................................................................95
DAC Input Mixers ...........................................................................96
Receiver Amplifier...........................................................................97
Receiver Output Mixer.....................................................................98
Receiver Output Volume ...................................................................99
Speaker Amplifiers .........................................................................100
Speaker Output Mixers ...................................................................101
Speaker Amplifier Signal Processing ...........................................................102
Excursion Limiter ........................................................................102
Speaker Output Volume...................................................................102
Power Limiter ...........................................................................105
Distortion Limiter ........................................................................106
Headphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
DirectDrive Headphone Amplifier ...........................................................107
Charge Pump...........................................................................107
Class H Operation .......................................................................108
Headphone Ground Sense (HPSNS).........................................................108
Headphone Output Mixers.................................................................110
Headphone Output Volume................................................................111
Output Bypass Switches.....................................................................112
Click-and-Pop Reduction ....................................................................113
TABLE OF CONTENTS (continued)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Jack Detection.............................................................................114
Jack Insertion...........................................................................114
Accessory Button Detection ...............................................................114
Jack Removal...........................................................................114
Battery Measurement .......................................................................116
Device Status .............................................................................117
Device Revision............................................................................118
I2C Serial Interface .........................................................................118
Bit Transfer.............................................................................118
START and STOP Conditions...............................................................118
Early STOP Conditions....................................................................118
Slave Address ..........................................................................119
Acknowledge...........................................................................119
Write Data Format .......................................................................119
Read Data Format .......................................................................120
Applications Information.......................................................................121
Typical Operating Circuits....................................................................121
Filterless Class D Operation ..................................................................123
RF Susceptibility ...........................................................................123
Startup/Shutdown Sequencing................................................................123
Component Selection .......................................................................124
Optional Ferrite Bead Filter ................................................................124
Input Capacitor..........................................................................124
Charge-Pump Capacitor Selection ..........................................................124
Charge-Pump Flying Capacitor.............................................................125
Charge-Pump Holding Capacitors...........................................................125
Unused Pins ..............................................................................125
Recommended PCB Routing .................................................................126
Supply Bypassing, Layout, and Grounding ......................................................126
WLP Applications Information.................................................................127
Ordering Information .........................................................................127
Package Information..........................................................................128
Revision History .............................................................................131
TABLE OF CONTENTS (continued)
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Functional Diagram
SDA
SCL
I2C
MCLK
CLOCK
CONTROL
MIC2N
MIC2PE6
JACKSNS
JACK
DETECTION
JDETEN
MBEN
IAS
REG
INABYP
MIC2BYP
PGAM2:
+20dB TO 0dB
PGAM1:
+20dB TO 0dB
PA2EN:0/20/30dB
EXTMIC
PA1EN:0/20/30dB
EXTMIC
MIC1N/DIGMICCLK
MIC1P/DIGMICDATA
DSTS
MAS1
DAI1
SEL1
SEL2
BCLK1
BCLKS1
LRCLK1
SDOUT1
SDIN1
SIDETONE
DVST:0dB TO -60dB
LTEN1
LBEN2
AUTOMATIC
GAIN
CONTROL
EQ1E
Q2EN
DVEQ1:0dB TO -15dBDV1G:0/6/12/18dB
DV2:0dB TO -15dB
DCB2
5-BAND
PARAMETRIC
5-BAND
PARAMETRIC
DVEQ2:0dB TO -15dB
FLEXSOUND
TECHNOLOGY
MULTI BAND ALC
EXCURSION LIMITER
DV1:0dB TO -15dB
MODE1DVFLT
DALEN
MIXDAR
DACL
DAREN
DACR+
BIT
CLOCK
FRAMECLOCK
DATA
OUTPUT
DATAINPUT
MAS1
HIZOFF1
SDIEN1
SDIEN2
MAS2
DAI2
BCLK2
LRCLK2
SDOUT2
SDIN2
BIT
CLOCK
FRAMECLOCK
DATA
OUTPUT
DATAINPUT
MAS2
HIZOFF2
LRCLKS1
SDOUTS1
SDINS1
DVDDS1
BCLKS2
LRCLKS2
SDOUTS2
SDINS2
DVDDS2
DVDD
AVDD
MUX
LBEN1
BIAS
MAX98089
NOISE GATE
MODE1
AVFLT
SRMIX_
AVLG: 0/6/
12/18dBAVL:0dB
TO -15dB
AVRG: 0/6/12/18dBAVR:0dBTO -15dB
AUDIO/
VOICE
FILTERS
AUDIO
FILTERSAUDIO/
VOICE
FILTERS
MIX
MIX
MIXDAL
MIX
IRQ
ADREN
DGND
AGND
C6, C7, D5, D6, D7, E3
N.C.
ADLEN
MIX
MIXADLMIXADR
MIX
ADCRADCL
INBDIFF
PGAINB:+20dB TO -6dB
INB2
INB1
INA2/EXTMICN
INA1/EXTMICP
PGAINB:+20dB TO -6dB
INADIFF
PGAINA:+20dB TO -6dB
PGAINA:+20dB TO -6dB
MIXRECR
MIX
MIXRECL
MIX
MIXSPR
MIX
MIXSPL
MIX
MIXHPR
MIX
0dB0dB
RECVOLL:+8dB TO -62dB
RECLENRECREN
RECVOLR:+8dB TO -62dB
RECBYP
SPKBYP
RECP/
LOUTL/
RXINP
RECN/
LOUTR/
RXINN
MIXHPL
MIX
SPKLP
SPKLN
SPVOLL:+8dB TO -62dB
LINEMODE
A4, B4
SPKLVDD
A3, B3A5, B5
SPKLGND
C4, C5
SPKRVDD
C3, D3
SPKRP
C1, C2
SPKRN
A1, B1
SPLENSPREN
DIST
TION
LIMI
SPVOLR:+8dB TO -62dBMIXHPL_PATH SELMIXHPR_PATH SEL
SPKRGND
A2, B2
PVDD
HPGNHPVSSHPVDD
C1N
C1P
CHARGE
PUMP
HPVOLL:+3dB TO -67dB
HPL
HPSNSC8
HPLEN
HPVOR:+3dB TO -67dB
HPR
HPREN
+6dB+6dB
SAMPLE RATE
CONVERTER
PORT S2
PORT S1
NOTE: BUMP NUMBERS SHOWN FOR WLP PACKAGE. SEE THE
PIN DESCRIPTION
SECTION FOR TQFN PINOUT.
MAX98089
