19-5865; Rev 1; 3/12
E V A L U A T I O N K I T A V A I L A B L E
MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
General Description
Features
S 5.6mW Power Comsumption (DAC to HP at 97dB DR)
The MAX98089 is a full-featured audio codec whose high
performance and low power consumption make it ideal
for portable applications.
S 101dB DR Stereo DAC (8kHz < f < 96kHz)
S
S 93dB DR Stereo ADC (8kHz < f < 96kHz)
S
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.
S Stereo Low EMI Class D Amplifiers
1.7W/Channel (8I, V
2.9W/Channel (4I, V
= 5.0V)
= 5.0V)
SPK�VDD
SPK�VDD
S Efficient Class H Headphone Amplifier
S Differential Receiver Amplifier/Stereo Line Outputs
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.
S 2 Stereo Single-Ended/Mono Differential Line
Inputs
S 3 Differential Microphone Inputs
S FlexSound Technology
5-Band Parametric EQ
The IC also features a mono differential amplifier that can
also be configured as a stereo line output.
Automatic Level Control (ALC)
Excursion Limiter
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.
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
Integrated FlexSoundKtechnology 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.
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)
The device is fully specified over the -40NC to +85NC
Ordering Information appears at end of data sheet.
extended temperature range.
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX98089.related.
FlexSound is a trademark of Maxim Integrated Products, Inc.
Simplified Block Diagram
2
I
2
I
2
I S/PCM
C
S/PCM
RECEIVER/LINEOUT AMPS
DIGITAL
AUDIO
DIGITAL
AUDIO
CONTROL
INTERFACE
INTERFACE
DIGITAL MICROPHONE
INPUT
FLEXSOUND TECHNOLOGY
• 5-BAND PARAMETRIC EQ
• AUTOMATIC LEVEL CONTROL
• LOUDSPEAKER PROCESSING
• EXCURSION LIMITER
• THD LIMITER
• POWER LIMITER
• MICROPHONE PROCESSING
• AUTOMATIC GAIN CONTROL
• NOISE GATE
ADC
ADC
SPEAKER AMP
SPEAKER AMP
HEADPHONE AMP
DAC
DAC
MIX
LINEIN A1
MIX
• ASYNCHRONOUS DIGITAL MIXING
LINEIN A2
LINEIN B1
+
+
MAX98089
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.
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