AS3561-BWLT

AS3561-BWLT Datasheet

AS3561

Part	Datasheet
AS3561-BWLT	AS3561-BWLT (pdf)

Related Parts	Information
AS3561-BWLM	AS3561-BWLM

PDF Datasheet Preview
Data Sheet AS3561 Class-H Stereo Headphone Amplifier 1 General Description The AS3561 is a Class-H stereo headphone amplifier optimized for usage within portable devices. The Class-H supply rail adaptation is implemented by an integrated DCDC buck converter that takes its input directly from the battery. The continuous adaption of supply rails is done according to the input signal swing and load conditions. This architecture implements significant power savings compared to traditional Class-AB amplifiers. An I2C control interface is implemented for a 32-step volume control. The integrated charge pump generates a symetric negative supply for true ground output signal levels without the need of output coupling capacitors. A supervisory circuit is included for overtemperature and shortcircuit protection. Differential inputs together with output ground sensing guarantees very low noise sensitivity. 2 Key Features amplifier with integrated DCDC buck converter - 2x30mW, THD - >100dB SNR pump for true ground output without coupling capacitors battery connection with wide supply range 2.5V to 5.5V power consumption optimized for battery operation - 1 mA quiescent current with both channels enabled - <5 uA shutdown current Differential Inputs reduce system noise - Also configurable as Single-Ended Inputs pin for ground sensing and ground feedback minimizes sensitivity to interference control interface - volume control with 32 gain steps, -59 to +4dB, <-80dB mute - Channel independent enable control Current and Temperature Supervisor mm Pitch WCSP 1.615x1.615mm 3 Applications Phones Navigation DevicesMedia Devices Figure AS3561 Block Diagram 2.2u 2.2u 10u 2.2u AVDD SW HPVDD CPP CPN HPVSS Headphone Left/Right 2.2u INRP 2.2u INRN 2.2u INLP 2.2u INLN SCL SDA DCDC Buck Charge Pump Supervisor Current & Temp AGND HPL SGND 1 - 18 AS3561 Data Sheet - Contents Contents 1 General Description 1 2 Key Features 1 3 Applications 1 4 Pin Assignments 3 Pin Descriptions 3 5 Absolute Maximum Ratings 4 6 Electrical Characteristics 5 7 Detailed Operating Characteristics 7 8 Detailed Description 8 I2C Control Interface 8 9 Register Definition 9 Register Overview 9 Detailed Register Descriptions 9 10 Application Information GND Connections 11 External Elements 11 Software Shutdown 11 Package Drawings and Markings 12 Ordering Information 14 2 - 18 AS3561 Data Sheet - Pin Assignments 4 Pin Assignments Figure Pin Assignments Top View AVDD SW HPVDD CPP CPN HPVSS INRP INRN INLP INLN SCL SDA DCDC Buck Charge Pump AS3561 ground sense HPR SGND Supervisor Current & Temp AGND Top View A1 A2 A3 A4 SW AVDD INLN B1 B2 AGND CPP B3 B4 HPVDD INLP C1 C2 C3 C4 CPN HPVSS SGND INRP D1 D2 SDA SCL D3 D4 HPR INRN Pin Descriptions Table Pin Descriptions Pin Name SW AVDD HPL Pin Number A1 A2 A3 INLN AGND HPVDD INLP HPVSS Data Sheet - Ordering Information 12 Ordering Information The devices are available as the standard products shown in Table Table Ordering Information Ordering Code AS3561BWLT Delivery Form Tape&Reel Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at Package WL-CSP 17 - 18 AS3561 Data Sheet - Copyrights Copyrights Copyright 2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 18 - 18

PDF Datasheet Preview

Data Sheet

AS3561

Class-H Stereo Headphone Amplifier
1 General Description

The AS3561 is a Class-H stereo headphone amplifier optimized for usage within portable devices. The Class-H supply rail adaptation is implemented by an integrated DCDC buck converter that takes its input directly from the battery. The continuous adaption of supply rails is done according to the input signal swing and load conditions. This architecture implements significant power savings compared to traditional Class-AB amplifiers.

An I2C control interface is implemented for a 32-step volume control.

The integrated charge pump generates a symetric negative supply for true ground output signal levels without the need of output coupling capacitors.

A supervisory circuit is included for overtemperature and shortcircuit protection.

Differential inputs together with output ground sensing guarantees very low noise sensitivity.
2 Key Features
amplifier with integrated DCDC buck converter - 2x30mW, THD - >100dB SNR
pump for true ground output without coupling capacitors battery connection with wide supply range 2.5V to 5.5V power consumption optimized for battery operation
- 1 mA quiescent current with both channels enabled - <5 uA shutdown current Differential Inputs reduce system noise
- Also configurable as Single-Ended Inputs pin for ground sensing and ground feedback minimizes
sensitivity to interference control interface
- volume control with 32 gain steps, -59 to +4dB, <-80dB mute - Channel independent enable control

Current and Temperature Supervisor mm Pitch WCSP 1.615x1.615mm
3 Applications

Phones Navigation DevicesMedia Devices

Figure AS3561 Block Diagram
2.2u
2.2u
10u 2.2u

AVDD SW HPVDD CPP CPN HPVSS Headphone Left/Right
2.2u INRP 2.2u INRN
2.2u INLP 2.2u INLN

SCL SDA

DCDC Buck

Charge Pump

Supervisor

Current & Temp

AGND

HPL SGND
1 - 18

AS3561

Data Sheet - Contents

Contents
1 General Description 1 2 Key Features 1 3 Applications 1 4 Pin Assignments 3

Pin Descriptions 3 5 Absolute Maximum Ratings 4 6 Electrical Characteristics 5 7 Detailed Operating Characteristics 7 8 Detailed Description 8

I2C Control Interface 8 9 Register Definition 9
Register Overview 9 Detailed Register Descriptions 9 10 Application Information GND Connections 11 External Elements 11 Software Shutdown 11 Package Drawings and Markings 12 Ordering Information 14
2 - 18

AS3561

Data Sheet - Pin Assignments
4 Pin Assignments

Figure Pin Assignments Top View

AVDD SW HPVDD CPP CPN HPVSS

INRP INRN

INLP INLN

SCL SDA

DCDC Buck

Charge Pump

AS3561
ground sense

HPR SGND

Supervisor

Current & Temp

AGND

Top View

A1 A2 A3 A4

SW AVDD

INLN

B1 B2

AGND CPP

B3 B4

HPVDD INLP

C1 C2 C3 C4

CPN HPVSS SGND INRP

D1 D2

SDA SCL

D3 D4

HPR INRN

Pin Descriptions

Table Pin Descriptions

Pin Name SW AVDD HPL

Pin Number A1 A2 A3

INLN

AGND

HPVDD

INLP

HPVSS
Data Sheet - Ordering Information
12 Ordering Information

The devices are available as the standard products shown in Table
Table Ordering Information
Ordering Code AS3561BWLT

Delivery Form Tape&Reel

Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect:

For further information and requests, please contact us or find your local distributor at

Package WL-CSP
17 - 18

AS3561

Data Sheet - Copyrights

Copyrights

Copyright 2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01

For Sales Offices, Distributors and Representatives, please visit:
18 - 18

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS3561-BWLT Datasheet file may be downloaded here without warranties.

Datasheet ID: AS3561-BWLT 519688