Home Components Hardware Boards Books Kits
Futurlec - The Electronic Components and Semiconductor Superstore
 Search
Order Status Order Status

Corporate

dotAbout Us
dotDelivery
dotGuarantee

Services

dotPCB Manufacture
dotPCB Design
dotBoard Assembly

Need Help

dotContact Us
dotNews
dotLatest Products
dotOrdering Information

Hello. Welcome to Futurlec. The ELECTRONIC COMPONENTS Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help.


TOP STORIES


New High-Performance MEMS Microphones


New family of digital and analog output microphones delivers industry's best signal-to-noise ratio and frequency response


New High-Performance MEMS Microphones from Analog Devices Despite the proliferation of electronics devices that integrate voice, music, and video, the quality of sound produced by these handheld electronics has not lived up to consumer expectations. Analog Devices, Inc., (ADI) well-known to audiophiles for its high-fidelity audio technology, has created a microphone capable of high-fidelity audio/video playback, conference calling, TIA-920-compliant VoIP (voice-over-IP), voice recognition, and other functions. ADI combined audio applications know-how with MEMS (micro-electromechanical systems) technology to design a new family of microphones with the industry's highest SNR (signal-to-noise ratio) of greater than 61-dB A-weighted. Today, the highest quality sound available in a cell phone, for example, is just 55 dB. The new omni-directional input microphones are available with digital output or analog output and deliver the industry's flattest frequency response from 100 Hz to greater than 15k Hz-and with a package size and cost tailored to the design considerations of portable electronics manufacturers.

“After faithfully serving the electronics industry for nearly 50 years, electret condenser microphones are beginning to give way at the edges to silicon micromachined microphones. MEMS microphones have several advantages: they can be manufactured using surface mounting, withstand high reflow temperatures, are easily integrated with CMOS processes and other audio electronics, and they offer improved noise cancellation and immunity to RF and EMI,” said Jeremie Bouchaud, director and principal analyst for MEMS at research firm, iSuppli Corp. “Today, MEMS microphones account for a bit less than 10% of the total market in units, but we expect that shipment will increase by 32% yearly over the next 4 years to exceed 1 billion units in 2012.”

“Combining the power-saving and space-saving benefits of Class-D audio technology with ADI's linear IC expertise has enabled a portfolio of audio amplifiers that deliver exceptional sound for a range of applications-from portable devices such as cellular handsets and MP3 players, to thin flat panel advanced televisions and multi-channel surround-sound car stereos,” said Steve Sockolov, product line director, Precision Signal Processing. “While most Class-D amplifiers use some variation of pulse-width modulation (PWM), ADI's Class-D amplifiers use a sigma-delta pulse density modulation (PDM) to reduce the amplitude of spectral components at high-frequencies, thus significantly minimizing EMI emissions.”

“Analog Devices is combining more than 15 years experience as a supplier of high quality MEMS sensors to the automotive and industrial markets with a heritage of high-fidelity audio design,” said Mark Martin, vice president, Micromachined Products Division, Analog Devices. “ADI leveraged its proven iMEMS Motion Signal Processing technology, which has shipped more than 400 million components to date, to develop a new family of high performance analog and digital output MEMS microphones that compliment our audio codecs, Class-D amplifiers, and processors. Our customers now have a single source for all their audio signal chain design and support needs.”

The ADMP421 PDM (pulse density modulated) digital output MEMS microphone is designed for multimedia and VoIP-enabled cell phones, Bluetooth headsets and other systems that rely on high quality digitized voice and audio. The digital output of the new ADMP421 microphone provides high immunity to coupled noise from RF (radio frequency) and EMI (electromagnetic interference) emanating from sources such as WiFi antennas and LCD (liquid crystal displays) clock signals. By eliminating the need for analog signal conditioning, as well as the cable shielding materials commonly required to route analog signals, system designers can optimize the placement of the ADMP421 digital MEMS microphone to improve audio-enhancement features, such as stereo sound and array beam forming. The ADMP421 features 80dB FS PSRR (power supply rejection ratio), Left/Right select, and integrated sleep mode.

In addition to providing the industry's best SNR and frequency response, Analog Devices' ADMP401 analog output MEMS microphone delivers superior PSRR of better than 50 dBV, simplifying power supply design requirements to the microphone for near-field and far-field applications.



The company's Web site address is www.analog.com
[Reprinted with kind permission from Analog Devices]


Headlines

arrowST Release New Audio Software

arrowMicrochip Release ATtiny1617 Microcontrollers

arrowAnalog Devices and Linear Technology to Combine

arrowNew 12V Step-Down Power Modules

arrowLT Releases Bidirectional Circuit Breaker

arrowRenesas Electronics Acquires Intersil

Other Stories

arrowQualcomm To Acquire NXP

arrowNew Microcontroller with 256KB FRAM Memory

arrowNew MEMS Switch Technology

arrowNew Drone Battery Management Design

arrowST’s New Miniature Multi-Sensor Module

arrowNew Low-Power, Long-Range Radio Chip

arrowNew AVR Microcontrollers

arrowNew STM8 C-Compiler

arrowMicrochip to Acquire Atmel

arrowNew Time-of-Flight IC with Object Detection

arrowNXP Release Automotive Ethernet Solutions

arrowNew Galvanic Skin Response Design

arrowMicrochip Releases JukeBlox® 4 Platform

arrowNew 2-Pin Self-Powered Serial EEPROM

arrowNXP and Freescale Announce Merger

arrowMicrochip's New Motion Module

arrowNew Heads-up Swimming Monitor

arrow New Ultrasonic Flow Meter Design

arrowLinear Technology's New Power Monitoring IC

arrowNew Multi-Tuner Car-Radio IC from STMicroelectronics

arrowAtmel Release New ATmega Microcontrollers

arrowNew Low-Cost PIC32 Microcontrollers

arrowNew MPLAB Harmony Firmware from Microchip

arrowAtmel Release Studio 6.2 IDE

arrowNew High Accuracy Pressure Sensor

arrowNew Smart Meter IC from Microchip

arrowDynamic NFC Tags for Comsumer Appliances

arrowNew Floating Switch Architecture for LED Lighting

arrowNew Power Monitoring IC from Microchip

arrowSTMicroelectronics Releases Unique HomePlug Smart System-on-Chip

arrowAnalog Devices Release New Mixed-Signal ARM-M4 Processor

arrowNew Wireless Power Chip for Qi Charging Stations

arrowHigh-Performance Single-Chip AM/FM Radio Tuners

arrowNew Flourescent Ballast Control IC

arrowNew Ultra-Wideband High Linearity Mixer

arrowNew Near Field Communication Tags

arrowNew Freescale 5V 32-bit ARM Cortex-M0 MPUs

arrowNew DockPort Solution Enables Video, USB and Power Over a Single Cable

arrowWorld's Smallest e-Compass Module

arrowNew Class-AB Audio Amplifers from NXP

arrowTI Releases Li-Ion Battery Fast Charge Chipset

arrowNew Atmel Cortex-A5 MPU Loaded with Features

arrowNew Sound Chip Delivers Excellent Sound Quality

arrowNew PIC Microcontrollers with Integrated Op-Amps

arrowMicrochip Releases New High Density 1Mbit Serial SRAM

arrowNew e-Compass Module with Motion and Magnetic Sensors

arrowMicrochip Releases New USB PIC® Microcontrollers

arrowRevolutionary New Audio IC Delivers 5 Times the Power

arrowNew Atmel ARM Cortex-M4 Microcontroller

arrowNew Fully Integrated Ultrasonic Signal Conditioner

arrowNew Java Design Platform for STM32 Microcontrollers

arrowNXP Adds New GreenChip IC for Use With Mains LED Lighting

arrowMicrochip Releases Improved C Compiler for PIC Microcontrollers

arrowNew Atmel Studio 6 Release with Support for ARM Microcontrollers

arrowFreescale Releases New Kinetis Microcontrollers with 16-bit ADC

arrowNew Low-Voltage Digital Thermometers/Thermostats from Maxim

arrowNXP Adds New Low Power ARM Microcontrollers

arrowAnalog Devices New MEMS Accelerometers




How To Order  |  What's New  |  Your Account  |  Order Status  |  Help

About Us  |  Contact Us

Copyright Information © 2017, Futurlec