MAX9853ETM+ Maxim Integrated Products, MAX9853ETM+ Datasheet

MAX9853ETM+

Manufacturer Part Number

MAX9853ETM+

Description

IC CODEC AUDIO STEREO 48TQFN

Manufacturer

Maxim Integrated Products

Type

Stereo Audior

Datasheet

1.MAX9851ETM.pdf (71 pages)

Specifications of MAX9853ETM+

Data Interface

Serial

Resolution (bits)

18 b

Number Of Adcs / Dacs

2 / 2

Sigma Delta

Yes

S/n Ratio, Adcs / Dacs (db) Typ

81.5 / 88

Dynamic Range, Adcs / Dacs (db) Typ

82 / 87.5

Voltage - Supply, Analog

2.6 V ~ 3.3 V

Voltage - Supply, Digital

1.7 V ~ 3.3 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

48-TQFN Exposed Pad

Conversion Rate

48 KHz

Resolution

18 bit

Operating Supply Voltage

1.7 V to 3.3 V

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Snr

75 dB

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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The MAX9851/MAX9853 are single-chip, stereo audio

CODECs designed to provide a complete audio solu-

tion for a GSM/GPRS/EDGE cell phone. The MAX9851/

MAX9853 provide stereo DirectDrive

amplifiers, a mono receiver speaker amplifier, stereo

Class D speaker amplifiers (MAX9851 only), stereo dif-

ferential line outputs (MAX9853 only), microphone input

amplifiers, plus flexible input selection and gain control.

Two serial digital audio interfaces are included, one

intended to accept voiceband data and the other

accepting I

reconfigured as needed to act as a secondary I

input—allowing multiple audio source mixing of ringer

tones or other audio at different sample rates. A trans-

ducer/vibrator signal can be derived from digital audio.

The stereo digital-to-analog converter (DAC) path

includes filtering and mixing, programmable-gain ampli-

fiers (PGA), soft muting, and optional voiceband digital

filtering. The MAX9851/MAX9853 accept up to two digital

audio inputs at different sample rates. All analog inputs

have PGAs on the front end, allowing dynamic range

optimization with a wide range of input sources.

The stereo analog-to-digital converter (ADC) converts

audio signals from either internal or external microphones

or stereo line inputs. The microphone amplifiers have a

programmable gain from 0 to 40dB to handle both ampli-

fied microphones and electret modules. In addition to a

digital highpass filter to remove DC offset voltages, the

ADC also features voiceband digital filtering.

The digital audio interfaces support a variety of serial

audio formats. The secondary serial audio interface has

an independent supply voltage to allow integration into

multiple supply systems. Control for volume levels, sig-

nal mixing, and operating modes is done through the

All circuitry is optimized for high PSRR. The MAX9851/

MAX9853 use a thermally efficient, space-saving 48-pin

thin QFN package (7mm x 7mm x 0.8mm) with an

exposed pad.

19-3732; Rev 2; 7/07

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.

Stereo Audio CODECs with Microphone, DirectDrive

C 2-wire interface.

Headphones, Speaker Amplifiers, or Line Outputs

GSM/GPRS/EDGE Cell Phones

PDAs/SmartPhones

S data. The voiceband interface can be

________________________________________________________________ Maxim Integrated Products

General Description

Applications

headphone

S feed

♦ +1.7V to +3.3V (Digital) and +2.6V to +3.3V

♦ +2.6V to +5.5V Class D Speaker Amplifier

♦ Low 26mW Quiescent Power Consumption

♦ High 98dB Power-Supply Rejection Ratio

♦ 8kHz to 48kHz Sample Rate (Replay and Record)

♦ Stereo 18-Bit ADC and DAC

♦ Low-Noise Stereo Microphone Inputs and Stereo

♦ Dual Source Digital Mixing (DAC)

♦ Selectable Voiceband Filter for

♦ Digital Filtering, Soft Mute, and Volume Control

♦ Low-Noise, High-PSRR Microphone Bias

♦ Stereo DirectDrive Headphone Amplifier

♦ Mono DirectDrive Handset Receiver Amplifier

♦ Stereo Class D, Ultra-Low-EMI, Filterless Speaker

♦ Stereo Differential Line Output Amplifiers

♦ Clickless/Popless Operation

♦ Flexible Shutdown Modes for Power Saving

♦ Comprehensive Headset Detection

♦ Ultra-Low Power Wake-Up on Headset Detection

Note: All devices specified over the -40°C to +85°C temperature

range.

+Denotes lead-free package.

*EP = Exposed pad.

Pin Configurations and Selector Guide appear at end of data

sheet.

MAX9851ETM+

MAX9853ETM+

(Analog) Operation

Operation (Direct from Battery)

(Playback)

Line Inputs

Recording/Playback Modes

Generator

(2 x 50mW)

Amplifier with Active Emissions Limiting

(2 x 1.25W, 8Ω) (MAX9851)

(MAX9853)

(1 x 105mW)

PART

PIN-PACKAGE

48 TQFN-EP*

(7mm x 7mm x 0.8mm)

48 TQFN-EP*

(7mm x 7mm x 0.8mm)

Ordering Information

Features

PKG CODE

T4877-6

Related parts for MAX9853ETM+

MAX9853ETM+ Summary of contents

Page 1

... Flexible Shutdown Modes for Power Saving ♦ Comprehensive Headset Detection ♦ Ultra-Low Power Wake-Up on Headset Detection PART MAX9851ETM+ Applications MAX9853ETM+ Note: All devices specified over the -40°C to +85°C temperature range. +Denotes lead-free package. *EP = Exposed pad. Pin Configurations and Selector Guide appear at end of data sheet ...

Page 2

Stereo Audio CODECs with Microphone, DirectDrive Headphones, Speaker Amplifiers, or Line Outputs DV AND DV DD 1.7V TO 3.3V MAX9851 SDOUTS1 SDINS1 DIGITAL INTERFACE 1 BCLKS1 LRCLKS1 SDOUTS2 DIGITAL SDINS2 INTERFACE 2 BCLKS2 LRCLKS2 SDA SCL INTERNAL ...

Page 3

Stereo Audio CODECs with Microphone, DirectDrive Headphones, Speaker Amplifiers, or Line Outputs ABSOLUTE MAXIMUM RATINGS (Voltages with respect to AGND CPV .................................-0. DDS2 ...............................................................-4V to +0.3V ...