Analogue, Mixed Signal, LSI


Active audio noise cancellation ICs

27 May 2009 Analogue, Mixed Signal, LSI

austriamicrosystems has introduced two new additions to its high performance audio product family. The AS3501 and AS3502 are ICs enabling the design of receive path active noise cancelling solutions providing enhanced system performance and low power consumption.

The AS3501 is a highly integrated solution for feedforward noise cancellation and the AS3502 enables active noise cancellation for feedback solutions where the microphone of the system is acoustically close to the loudspeaker. Both ICs operate from a single 1,0 V to 1,8 V supply and combine true ground headphone amplifier stages with flexible noise cancelling architectures. Internal user-definable register settings allow different device configurations to lend differentiation and flexibility for a broad end-product portfolio. The devices operate in either standalone mode, suitable for accessories, or embedded mode, suitable for integration into music players and other portable multimedia equipment.

The AS3501 and AS3502 are able to provide up to 34 mW in single-ended mode and over 100 mW in BTL into 16 loudspeakers from a 1,5 V supply. The devices further guarantee signal-to-noise ratio above 100 dB and less than 0,1% total harmonic distortion. An innovative calibration solution removes the need for manual intervention during the manufacturing process and improves field reliability.

The AS3501 is available in a 24-pin 4 x 4 mm QFN package; the AS3502 is available in a 32-pin 5 x 5 mm QFN package. Both are suitable for operating environments ranging from -20°C to +70°C.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Microchip SoC FPGA
ASIC Design Services DSP, Micros & Memory
Microchip Technology introduced the RT PolarFire SoC FPGA, the first real-time Linux capable, RISC-V-based microprocessor subsystem on a proven RT PolarFire FPGA platform.

Read more...
Infineon launches Edge Ai software solution
Altron Arrow Analogue, Mixed Signal, LSI
Infineon has introduced DEEPCRAFT, a new software solution category brand for Edge AI and machine learning, after the company recognised the huge potential of Edge AI for the market.

Read more...
Development kit for MIL-STD-1553 dual transceiver
ASIC Design Services Telecoms, Datacoms, Wireless, IoT
Holt Integrated Circuits has announced the introduction of ADK-1592, a development kit designed to help customers interface Holt’s recently announced HI-1592 radiation hardened transceiver.

Read more...
Development kit for programmable 16-channel low-side driver
ASIC Design Services DSP, Micros & Memory
Holt Integrated Circuits has announced the introduction of ADK-84216, a development kit designed to demonstrate the features of Holt’s recently announced programmable 16-channel low-side driver, HI-84216.

Read more...
Microchip’s RTG4 FPGAs achieve highest space qualification
ASIC Design Services DSP, Micros & Memory
QML Class V is the highest level of qualification for space components, and a necessary step to satisfy mission-assurance requirements on the most critical space missions such as human-rated, deep space, and national security programmes.

Read more...
16-bit voltage output denseDAC
Altron Arrow Analogue, Mixed Signal, LSI
The AD5766 uses a versatile four-wire serial interface that operates at clock rates of up to 50 MHz for write mode, and is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards.

Read more...
AFE enables the software-defined factory
Avnet Silica Analogue, Mixed Signal, LSI
With its software configurable analogue inputs, where each input can be configured for voltage, current, resistance, or temperature, NXP’s N-AFE enables a new level of flexibility.

Read more...
Seven habits of highly efficient PCB designers
ASIC Design Services Editor's Choice Manufacturing / Production Technology, Hardware & Services
Design habits that expedite design completion, improve design quality, and enhance productivity are instrumental to highly efficient PCB design. This article lists what designers can do to succeed.

Read more...
Perfecting your PCB with DFM analysis
ASIC Design Services Manufacturing / Production Technology, Hardware & Services
From layout to manufacture and testing, a single fabrication holdup can cost a business untold amounts in lost productivity.

Read more...
New DFM Analysis solution for PCB layout designers
ASIC Design Services Manufacturing / Production Technology, Hardware & Services
This user-friendly DFM solution allows you to perform fabrication analysis effortlessly through the cloud-based Valor DFM engine.

Read more...