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Rainbow Electronics MAX98089 User Manual

Simplified block diagram, General description, Features

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MAX98089

Low-Power, Stereo Audio Codec

with FlexSound Technology

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19-5865; Rev 0; 6/11

Simplified Block Diagram

Ordering Information

appears at end of data sheet.

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.

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 < f

S

< 96kHz)

S

93dB DR Stereo ADC (8kHz < f

S

< 96kHz)

S

Stereo Low EMI Class D Amplifiers

1.7W/Channel (8I, V

SPK�VDD

= 5.0V)

2.9W/Channel (4I, V

SPK�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 I

2

S/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)

E V A L U A T I O N K I T A V A I L A B L E

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

I

2

C

CONTROL

I

2

S/PCM

DIGITAL

AUDIO

INTERFACE

I

2

S/PCM

MAX98089

DIGITAL

AUDIO

INTERFACE

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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