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PDF MAX98088 Data sheet ( Hoja de datos )
| Número de pieza | MAX98088 | |
| Descripción | Stereo Audio Codec | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-5335; Rev 0; 6/10
EVAALVUAAILTAIOBNLEKIT
Stereo Audio Codec
with FLEXSOUND Technology
General Description
The MAX98088 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.
Three differential analog microphone inputs are available
as well as support for two PDM digital microphones.
Integrated switches allow 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 loud-
speaker performance by optimizing the signal level and
frequency response while limiting the maximum distor-
tion 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.
FLEXSOUND is a trademark of Maxim Integrated Products,
Inc.
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
950mW/Channel (8I, VSPKVDD_ = 4.2V)
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)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX98088EWY+ -40NC to +85NC
63 WLP
+Denotes lead(Pb)-free/RoHS-compliant package.
Simplified Block Diagram
LINEIN A1
LINEIN A2
LINEIN B1
DIGITAL MICROPHONE
INPUT
+
I2C
I2S/PCM
I2S/PCM
CONTROL
ADC
MIX
ADC
DIGITAL
AUDIO
INTERFACE
DIGITAL
AUDIO
INTERFACE
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
DAC
DAC
MAX98088
RECEIVER/LINEOUT AMPS
SPEAKER AMP
SPEAKER AMP
MIX
HEADPHONE AMP
LINEIN B2
+
HEADPHONE AMP
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
www.DataSheet.in
1 page  
Stereo Audio Codec
with FLEXSOUND Technology
Functional Diagram
www.DataSheet.in
5
5 Page 
Stereo Audio Codec
with FLEXSOUND Technology
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VPVDD = VDVDD = VDVDDS1 = VDVDDS2 = +1.8V, VSPKLVDD = VSPKRVDD = 3.7V. Speaker loads (ZSPK) connected
between SPK_P and SPK_N. Receiver load (RREC) connected between RECP and RECN. Headphone loads (RHP) connected from
HPL or HPR to HPGND. Line out loads (RLOAD) connected from LOUTL and LOUTR to ground. RLOAD = RHP = J, RREC = J, ZSPK
= J, CREF = 2.2FF, CMICBIAS = CREG = 1FF, CC1N-C1P = 1FF, CHPVDD = CHPVSS = 1FF. AVMICPRE_ = +20dB, AVMICPGA_ = 0dB,
AVDACATTN = 0dB, AVDACGAIN = 0dB, AVADCLVL = 0dB, AVADCGAIN = 0dB, AVPGAIN_ = 0dB, AVHP_ = 0dB, AVREC = 0dB, AVSPK_
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. TA = +25NC, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
ADC STEREO AUDIO MODE DC BLOCKING HIGHPASS FILTER (MODE1 = 1)
Passband Cutoff
(-3dB from Peak)
fAHPPB AVFLT ≠ 000
DC Attenuation
DCAtten AVFLT ≠ 000
MICROPHONE AUTOMATIC GAIN CONTROL
AGC Hold Duration
AGCHLD = 01
AGCHLD = 11
AGC Attack Time
AGCATK = 00
AGCATK = 11
AGC Release Time
AGCRLS = 000
AGCRLS = 111
AGC Threshold Level
AGCTH = 0x0 to 0xF
AGC Threshold Step Size
AGC Gain
(Note 5)
ADC NOISE GATE
NG Threshold Level
ANTH = 0x3 to 0xF, referred to 0dBFS
NG Attenuation
(Note 5)
ADC-TO-DAC DIGITAL SIDETONE (MODE = 0)
Sidetone Gain Adjust
Range
AVSTGA
DVST = 0x01
DVST = 0x1F
Sidetone Gain Adjust Step
Size
Sidetone Path Phase Delay
1kHz, 0dB input, highpass filter 8kHz
disabled
16kHz
ADC-TO-DAC DIGITAL LOOP-THROUGH PATH
Dynamic Range (Note 4)
DR
fS = 48kHz, MCLK = 12.288MHz, MODE = 1
(FIR audio), MIC to HP output, TA = +25NC
Total Harmonic Distortion
+ Noise
THD+N
f = 1kHz, fS = 48kHz, MCLK = 12.288MHz, MODE
= 1 (FIR audio), MIC to HP output
DAC LEVEL CONTROL
DAC Attenuation Range AVDACATTN DV1DV2 = 0xF to 0x0 (Note 5)
DAC Attenuation Step Size
DAC Gain Adjust Range AVDACGAIN DV1G = 00 to 11 (Note 5)
DAC Gain Adjust Step Size
MIN
-3
0
-64
0
83
-15
0
TYP
MAX UNITS
0.000125
x fS
Hz
90 dB
50
400
2
123
0.078
10
1
ms
ms
s
+18 dB
dB
20 dB
-16 dB
12 dB
-0.5
-60.5
2
2.2
1.1
dB
dB
ms
93 dB
81 dB
0 dB
1 dB
18 dB
6 dB
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