Product Information

AS3422 EK-ST

Product Image X-ON

Datasheet
Audio IC Development Tools Noise Cancelling AS3422 IC Eval Kit

Manufacturer: ams
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)
N/A

Obsolete
Availability Price Quantity
0 - Global Stock

MOQ : 1
Multiples : 1
1 : USD 101.5625
N/A

Obsolete
0 - Global Stock

MOQ : 1
Multiples : 1
1 : USD 84.1439
N/A

Obsolete
0 - Global Stock

MOQ : 1
Multiples : 1
1 : USD 20.3411
N/A

Obsolete
     
Manufacturer
ams
Product Category
Audio IC Development Tools
RoHS - XON
Y Icon ROHS
Product
Evaluation Kits
Type
Active Noise Cancellation
Tool Is For Evaluation Of
As3422
Packaging
Bulk
Description/Function
Allows For Rapid Prototyping Of Anc Enabled Headsets, Addressing The Needs For Mono, Stereo, Wired, Wireless, Feedforward, And Feedback Topologies
Series
As3422
Brand
Ams
Interface Type
Usb
For Use With
As3422
Cnhts
8543709991
Hts Code
8542390001
Mxhts
85423901
Product Type
Audio Ic Development Tools
Factory Pack Quantity :
1
Subcategory
Development Tools
Taric
8542399000
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AS3421/22 Low Power Ambient Noise-Cancelling Speaker Driver Line Input 1 General Description Volume control via serial interface or push buttons The AS3421/22 are speaker driver with Ambient Noise Cancelling 64 steps 0.75dB and MUTE, pop-free gain setting function for headsets, headphones or ear pieces. It is intended to Fully differential stereo line inputs improve quality of e.g. music listening, a phone conversation etc. by reducing background ambient noise. ANC processing The fully analog implementation allows the lowest power Feed-forward cancellation consumption, lowest system BOM cost and most natural received voice enhancement otherwise difficult to achieve with DSP Feed-back cancellation with filter loop transfer function implementations. The device is designed to be easily applied to definable via simple RC components existing architectures. Simple in production SW calibration An internal OTP-ROM can be optionally used to store the 12-30dB noise reduction (headset dependent) microphone gain calibration settings as well as all application specific settings. 10-3000Hz wide frequency active noise attenuation (headset dependent) The AS3421/22 can be used in different configurations for best trade-off of noise cancellation, required filtering functions and Monitor Function mechanical designs. For assisted hearing, i.e. to monitor announcements The simpler feed-forward topology is used to effectively reduce Fixed (OTP prog.) ambient sound amplification to compensate frequencies typically up to 2-3kHz. The feed-back topology with headphone passive attenuation either 1 or 2 filtering stages has it strengths especially at very low frequencies. The typical bandwidth for feedback system is from 20Hz Incremental Functions up to 1kHz which is a little bit lower than with feed forward systems. ANC with or without music on the receiving path The filter loop for both systems is determined by measurements, for each specific headset individually, and depends very much on Music Playback mode for lowest power consumption mechanical designs. The gain and phase compensation filter OTP ROM for automatic trimming during production (4 times network is implemented with cheap resistors and capacitors for programmable) lowest system costs. AS3421/22 features also an audio playback only mode which allows Performance Parameter the user to easily switch between ANC on and off mode. In ANC off 7mA 1.5V stereo ANC <1A quiescent mode unused blocks are automatically switch off to guaranty lowest Extended PSRR for 217Hz power consumption in each operating mode. Increased TDMA noise immunity Interfaces 2 Key Features 2-wire serial control mode & volume inputs Microphone Input Calibration via Line-In or 2-wire serial interface 128 gain steps 0.375dB and MUTE with AGC Fixed 1.0-1.8V supply with internal CP Differential, low noise microphone amplifier Package Single ended or differential mode AS3421 QFN24 4x4mm 0.5mm pitch Improved supply for electret microphone AS3422 QFN32 5x5mm 0.5mm pitch MIC gain OTP programmable High Efficiency Headphone Amplifier 3 Applications 2x23mW, 0.1% THD+N 32, 1.5V supply, 100dB SNR The devices are ideal for wireless devices like stereo Bluetooth Bridged mode for e.g. 300 loads headsets as well as stereo wireless headsets. Click and pop less start-up and mode switching www.ams.com/ANC Revision 1.10 1 - 61AS3421/22 Datasheet - Applications Figure 1. AS3421 Feed Forward ANC Block Diagram Figure 2. AS3422 Feed-Back Block Diagram www.ams.com/ANC Revision 1.10 2 - 61

Tariff Desc

8543.70.00 Other machines and apparatus Free
13 Signal processors (graphic equalisers, crossovers etc.) 91 Other Free

9027.10.00 Instruments and apparatus for physical or chemical analysis (eg, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes Free

9031.80.00 MEASURING OR CHECKING INSTRUMENTS, APPLIANCES AND MACHINES, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER; PROFILE PROJECTORS Other instruments, appliances and machines Free

9030.31.00 Oscilloscopes, spectrum analysers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of 9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, x-ray, cosmic or other ionising radiations.
Other instruments and apparatus, for measuring or checking voltage, current, resistance or power Multimeters without a recording device Free

8473.30.00 Parts and accessories of the machines of 8471 AUTOMATIC DATA PROCESSING MACHINES AND UNITS THEREOF; MAGNETIC OR OPTICAL READERS, MACHINES FOR TRANSCRIBING DATA ONTO DATA MEDIA IN CODED FORM AND MACHINES FOR PROCESSING SUCH DATA, NOT ELSEWHERE SPECIFIED OR INCLUDED:
.Other 71 No Weighing less than 1kg Free

8537 BOARDS, PANELS, CONSOLES, DESKS, CABINETS AND OTHER BASES, EQUIPPED WITH TWO OR MORE APPARATUS OF 8535 OR 8536, FOR ELECTRIC CONTROL OR THE DISTRIBUTION OF ELECTRICITY, INCLUDING THOSE INCORPORATING INSTRUMENTS OR APPARATUS OF CHAPTER 90, AND NUMERICAL CONTROL APPARATUS, OTHER THAN SWITCHING APPARATUS OF 8517:
8538 PARTS SUITABLE FOR USE SOLELY OR PRINCIPALLY WITH THE APPARATUS OF 8535, 8536 OR 8537:
8538.10.10 22 For programmable controllers Free
AMS
ams / CMOSIS
ams AG
AMS SENSORS GERMANY
AMS SENSORS GERMANY GMBH
AMS SENSORS UK LTD
Ams-Taos
AMS-TAOS USA Inc
AMS-TAOS USA Inc.
TAS