AS3400

AS3400 Datasheet

AS3400 AS3410 AS3430

Part	Datasheet
AS3400	AS3400 (pdf)

Related Parts	Information
AS3410-EQFP	AS3410-EQFP
AS3430-EQFP	AS3430-EQFP
AS3400-EQFP	AS3400-EQFP
AS3410 EK-ST	AS3410 EK-ST
AS3410-EQFP-500	AS3410-EQFP-500
AS3430-EQFP-500	AS3430-EQFP-500
AS3420 EK-ST	AS3420 EK-ST
AS3400 EK-ST	AS3400 EK-ST
AS3430 EK-ST	AS3430 EK-ST

PDF Datasheet Preview
AS3400 AS3410 AS3430 Low Power Ambient Noise-Cancelling Speaker Driver 1 General Description The AS3400/10/30 are speaker driver with Ambient Noise Cancelling function for handsets, headphones or ear pieces. It is intended to improve quality of e.g. music listening, a phone conversation etc. by reducing background ambient noise. The fully analog implementation allows the lowest power consumption, lowest system BOM cost and most natural received voice enhancement otherwise difficult to achieve with DSP implementations. The device is designed to be easily applied to existing architectures. An internal OTP-ROM can be optionally used to store the microphones gain calibration settings. The AS3400/10/30 can be used in different configurations for best trade-off of noise cancellation, required filtering functions and mechanical designs. The simpler feed-forward topology is used to effectively reduce low frequency background noise. The feed-back topology with either 1 or 2 filtering stages can be used to reduce noise for a larger frequency range, and to even implement transfer functions like speaker equalization, Baxandall equalization, high/low shelving filter and to set a predefined loop bandwidth. The filter loop is optimized by the user for specific handset electrical and mechanical designs by dimensioning simple R, C components. Most handset implementations will make use of a single noise detecting microphone. Two microphones could be used to allow for increased flexibility of their location in the handset mechanical design. Using the bridged mode allows to even drive high impedance headsets. 2 Key Features Microphone Input 128 gain steps 0.375dB and MUTE with AGC Differential, low noise microphone amplifier Single ended or differential mode Improved supply for electret microphone MIC gain OTP programmable High Efficiency Headphone Amplifier 2x34mW, THD 16Ω, 1.5V supply, 100dB SNR Bridged mode for e.g. 300Ω loads Click and pop less start-up and mode switching Line Input Volume control via serial interface or volume pin 64 steps 0.75dB and MUTE, pop-free gain setting Single ended stereo or mono differential mode ANC processing Feed-forward cancellation Feed-back cancellation with filter loop transfer function definable via simple RC components Simple in production SW calibration 12-30dB noise reduction headset dependent 10-2000Hz wide frequency active noise attenuation headset dependent Monitor Function For assisted hearing, i.e. to monitor announcements Fixed OTP prog. ambient sound amplification to compensate headphone passive attenuation Volume controlled ambient sound amplification mixed with fixed OTP prog. attenuation of LineIn Incremental Functions ANC with or without music on the receiving path Improved dynamic range playback OTP ROM for automatic trimming during production 4 times programbable Performance Parameter 5/3.8mA 1.5V stereo/mono ANC <1µA quiescent Extended PSRR for 217Hz Interfaces 2-wire serial control mode & volume inputs Calibration via Line-In or 2-wire serial interface patent pending Single cell or fixed 1.0-1.8V supply with internal CP Package AS3400, AS3410 QFN24 [4x4mm] 0.5mm pitch AS3430 QFN32 [5.x5mm] 0.5mm pitch 3 Applications The devices are ideal for Ear pieces, Headsets, Hands-Free Kits, Mobile Phones, and Voice Communicating Devices. 1 - 51 AS3400 AS3410 AS3430 1v0 Data Sheet - Applications Figure AS3410 Feed Forward ANC Block Diagram Figure AS3430 Feed-Back Block Diagram 2 - 51 AS3400 AS3410 AS3430 1v0 Data Sheet - Applications Figure AS3400 Feed-Back Block Diagram Figure AS3400 Feed Forward Block Diagram 3 - 51 AS3400 AS3410 AS3430 1v0 Data Sheet - Contents 9 Register 25 10 Application Information 38 11 Package Drawings and 43 12 Ordering 47 4 - 51 AS3400 AS3410 AS3430 1v0 Data Sheet - Pin Assignments 4 Pin Assignments Note Pin assignment may change in preliminary data sheets. Figure Pin Assignments Top View 24 QMICL 23 VNEG 22 CPN 21 GND 20 CPP 19 VBAT 24 IOP1L 23 QOP1L 22 VNEG 21 CPN 20 GND 19 CPP AGND 1 LINL 2 LINR 3 VOL_CSDA 4 MODE_CSCL 5 MICL 6 AS3400 QFN 24pin 25 VNEG or open 18 HPVDD 17 HPR 16 HPL 15 VSS 14 QOP2R 13 IOP2R QMICL 1 AGND 2 LINL 3 LINR 4 VOL_CSDA 5 MODE_CSCL 6 AS3410 QFN 24pin 25 VNEG or open 18 VBAT 17 HPVDD 16 HPR 15 HPL 14 VSS 13 QOP1R MICS 7 MICR 8 QMICR 9 QLINR 10 IOP1R 11 QOP1R 12 MICL 7 ILED 8 MICS 9 MICR 10 QMICR 11 IOP1R 12 32 QOP1L 31 IOP2L 30 QOP2L 29 VNEG 28 CPN 27 GND 26 CPP 25 n.c. IOP1L 1 QLINL 2 QMICL 3 AGND 4 LINL 5 LINR 6 VOL_CSDA 7 MODE_CSCL 8 AS3430 QFN 32pin 33 Exposed Pad VNEG or open 24 VBAT 23 HPVDD 22 HPR 21 HPVSS 20 HPL 19 VSS 18 QOP2R 17 IOP2R MICL 9 ILED 10 MICS 11 MICR 12 QMICR 13 QLINR 14 IOP1R 15 QOP1R 16 5 - 51 AS3400 AS3410 AS3430 1v0 Data Sheet - Pin Assignments Pin Descriptions Note Pin description may change in preliminary data sheets. Table Pin Description for AS3400 AS3410 AS3430 Pin Name Pin Number AS3400 AS3410 AS3430 IOP1L QLINL QMICL AGND Data Sheet - Ordering Information 12 Ordering Information The devices are available as the standard products shown in Table Table Ordering Information Ordering Code AS3400-EQFP Low Power Ambient Noise-Cancelling Speaker Driver AS3410-EQFP Low Power Ambient Noise-Cancelling Speaker Driver AS3430-EQFP Low Power Ambient Noise-Cancelling Speaker Driver Delivery Form Tape & Reel dry pack Tape & Reel dry pack Tape & Reel dry pack Package QFN 24 [4.0x4.0x0.85mm] 0.5mm pitch QFN 24 [4.0x4.0x0.85mm] 0.5mm pitch QFN 32 [5.0x5.0x0.85mm] 0.5mm pitch Note All products are RoHS compliant and austriamicrosystems green. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at 50 - 51 AS3400 AS3410 AS3430 1v0 Data Sheet - Copyrights Copyrights Copyright 1997-2010, 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: 51 - 51

PDF Datasheet Preview

AS3400 AS3410 AS3430

Low Power Ambient Noise-Cancelling Speaker Driver
1 General Description

The AS3400/10/30 are speaker driver with Ambient Noise Cancelling function for handsets, headphones or ear pieces. It is intended to improve quality of e.g. music listening, a phone conversation etc. by reducing background ambient noise.

The fully analog implementation allows the lowest power consumption, lowest system BOM cost and most natural received voice enhancement otherwise difficult to achieve with DSP implementations. The device is designed to be easily applied to existing architectures.

An internal OTP-ROM can be optionally used to store the microphones gain calibration settings.

The AS3400/10/30 can be used in different configurations for best trade-off of noise cancellation, required filtering functions and mechanical designs.

The simpler feed-forward topology is used to effectively reduce low frequency background noise. The feed-back topology with either 1 or 2 filtering stages can be used to reduce noise for a larger frequency range, and to even implement transfer functions like speaker equalization, Baxandall equalization, high/low shelving filter and to set a predefined loop bandwidth.

The filter loop is optimized by the user for specific handset electrical and mechanical designs by dimensioning simple R, C components.

Most handset implementations will make use of a single noise detecting microphone. Two microphones could be used to allow for increased flexibility of their location in the handset mechanical design. Using the bridged mode allows to even drive high impedance headsets.
2 Key Features

Microphone Input 128 gain steps 0.375dB and MUTE with AGC

Differential, low noise microphone amplifier

Single ended or differential mode

Improved supply for electret microphone

MIC gain OTP programmable

High Efficiency Headphone Amplifier 2x34mW, THD 16Ω, 1.5V supply, 100dB SNR

Bridged mode for e.g. 300Ω loads

Click and pop less start-up and mode switching

Line Input Volume control via serial interface or volume pin 64 steps 0.75dB and MUTE, pop-free gain setting Single ended stereo or mono differential mode

ANC processing Feed-forward cancellation Feed-back cancellation with filter loop transfer function definable via simple RC components Simple in production SW calibration 12-30dB noise reduction headset dependent 10-2000Hz wide frequency active noise attenuation headset dependent

Monitor Function For assisted hearing, i.e. to monitor announcements Fixed OTP prog. ambient sound amplification to compensate headphone passive attenuation Volume controlled ambient sound amplification mixed with fixed OTP prog. attenuation of LineIn

Incremental Functions ANC with or without music on the receiving path Improved dynamic range playback OTP ROM for automatic trimming during production 4 times programbable

Performance Parameter 5/3.8mA 1.5V stereo/mono ANC <1µA quiescent Extended PSRR for 217Hz

Interfaces 2-wire serial control mode & volume inputs Calibration via Line-In or 2-wire serial interface patent pending Single cell or fixed 1.0-1.8V supply with internal CP

Package AS3400, AS3410 QFN24 [4x4mm] 0.5mm pitch AS3430 QFN32 [5.x5mm] 0.5mm pitch
3 Applications

The devices are ideal for Ear pieces, Headsets, Hands-Free Kits, Mobile Phones, and Voice Communicating Devices.
1 - 51

AS3400 AS3410 AS3430 1v0

Data Sheet - Applications

Figure AS3410 Feed Forward ANC Block Diagram

Figure AS3430 Feed-Back Block Diagram
2 - 51

AS3400 AS3410 AS3430 1v0

Data Sheet - Applications

Figure AS3400 Feed-Back Block Diagram

Figure AS3400 Feed Forward Block Diagram
3 - 51

AS3400 AS3410 AS3430 1v0

Data Sheet - Contents
9 Register 25 10 Application Information 38 11 Package Drawings and 43 12 Ordering 47
4 - 51

AS3400 AS3410 AS3430 1v0

Data Sheet - Pin Assignments
4 Pin Assignments

Note Pin assignment may change in preliminary data sheets. Figure Pin Assignments Top View
24 QMICL 23 VNEG 22 CPN 21 GND 20 CPP 19 VBAT 24 IOP1L 23 QOP1L 22 VNEG 21 CPN 20 GND 19 CPP

AGND 1 LINL 2 LINR 3

VOL_CSDA 4 MODE_CSCL 5

MICL 6

AS3400

QFN 24pin
25 VNEG or open
18 HPVDD 17 HPR 16 HPL 15 VSS 14 QOP2R 13 IOP2R

QMICL 1 AGND 2

LINL 3 LINR 4 VOL_CSDA 5 MODE_CSCL 6

AS3410

QFN 24pin
25 VNEG or open
18 VBAT 17 HPVDD 16 HPR 15 HPL 14 VSS 13 QOP1R

MICS 7 MICR 8 QMICR 9 QLINR 10 IOP1R 11 QOP1R 12 MICL 7 ILED 8 MICS 9 MICR 10 QMICR 11 IOP1R 12
32 QOP1L 31 IOP2L 30 QOP2L 29 VNEG 28 CPN 27 GND 26 CPP 25 n.c.

IOP1L 1 QLINL 2 QMICL 3 AGND 4

LINL 5 LINR 6 VOL_CSDA 7 MODE_CSCL 8

AS3430

QFN 32pin
33 Exposed Pad VNEG or open
24 VBAT 23 HPVDD 22 HPR 21 HPVSS 20 HPL 19 VSS 18 QOP2R 17 IOP2R

MICL 9 ILED 10 MICS 11 MICR 12 QMICR 13 QLINR 14 IOP1R 15 QOP1R 16
5 - 51

AS3400 AS3410 AS3430 1v0

Data Sheet - Pin Assignments

Pin Descriptions

Note Pin description may change in preliminary data sheets.

Table Pin Description for AS3400 AS3410 AS3430

Pin Name

Pin Number AS3400 AS3410 AS3430

IOP1L

QLINL

QMICL

AGND
Data Sheet - Ordering Information
12 Ordering Information

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

AS3400-EQFP Low Power Ambient Noise-Cancelling Speaker Driver

AS3410-EQFP Low Power Ambient Noise-Cancelling Speaker Driver

AS3430-EQFP Low Power Ambient Noise-Cancelling Speaker Driver

Delivery Form

Tape & Reel dry pack

Tape & Reel dry pack

Tape & Reel dry pack

Package

QFN 24 [4.0x4.0x0.85mm] 0.5mm pitch

QFN 24 [4.0x4.0x0.85mm] 0.5mm pitch

QFN 32 [5.0x5.0x0.85mm] 0.5mm pitch

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

For further information and requests, please contact us or find your local distributor at
50 - 51

AS3400 AS3410 AS3430 1v0

Data Sheet - Copyrights

Copyrights

Copyright 1997-2010, 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:
51 - 51

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 AS3400 Datasheet file may be downloaded here without warranties.

Datasheet ID: AS3400 519677