All items tagged with Texas Instruments (83)

Rotel Unveils Upgraded A14MKII, RA-1572MKII, and RA-1592MKII Integrated Amplifiers

April 19, 2021 by audioXpress Staff

Rotel Unveils Upgraded A14MKII, RA-1572MKII, and RA-1592MKII Integrated Amplifiers

Rotel announced acoustic and performance upgrades to three of the company’s integrated amplifier models in the 14 and 15 Series product lines. The upgrades include circuit design innovations and component level changes in key circuit locations, leveraging the design elements from the acclaimed Rotel Michi Series. The A14MKII, RA-1572MKII and RA-1592MKII integrated amplifiers received these upgrades built from the Michi engineering efforts that were 3 years in the making.

New DC/DC Controllers with Integrated Active EMI Filter for Compact Power Supplies

April 9, 2021 by audioXpress Staff

New DC/DC Controllers with Integrated Active EMI Filter for Compact Power Supplies

Texas Instruments (TI) introduced a new family of synchronous DC/DC buck controllers that enable smaller power-supply solutions with lower electromagnetic interference (EMI). Featuring an integrated active EMI filter (AEF) and dual-random spread-spectrum (DRSS) technology, the LM25149-Q1 and LM25149 enable designers to cut the area of the external EMI filter in half, lower the conducted EMI of the power design by as much as 55 dBµV across multiple frequency bands, or achieve a combination of reduced filter size and low EMI.

audioXpress April 2021 Looks Ahead at the Evolution in Voice, Communication and True Wireless

March 11, 2021 by audioXpress Staff

audioXpress April 2021 Looks Ahead at the Evolution in Voice, Communication and True Wireless

The April 2021 issue of audioXpress is now available in print and online and it addresses a convergence of technologies in two of the most exciting product segments at the moment: True Wireless Earbuds and Voice & Communication. George Ntanavaras explores vibration measurements using piezoelectric sensors, Jens Tybo Jensen describes a highly efficient hybrid bass amplification design, and Richard Honeycutt discusses how horns have evolved to address sound directionality. And much more top-level audio electronics from top experts in the field. Get Your Copy Now!

Raspberry Pi Relaunches Four IQAudio HATs Following Acquisition

March 9, 2021 by audioXpress Staff

Raspberry Pi Relaunches Four IQAudio HATs Following Acquisition

Raspberry Pi has relaunched four IQaudio HATs as official Pi audio add-on boards with lower prices ranging from $20 to $30: the IQaudio DAC+, DAC Pro, DigiAMP+ and Codec Zero. In December 2020, Raspberry Pi Trading announced it had acquired IQAudio and would be relaunching their Raspberry Pi audio HATs at lower prices. Now, IQAudio’s four most popular HATs have been relaunched as official Pi accessories and are available via the usual Pi resellers.

Orchard Audio PecanPi USB/SPDIF receives Roon Tested Certification

February 1, 2021 by audioXpress Staff

Orchard Audio PecanPi USB/SPDIF receives Roon Tested Certification

Orchard Audio, the company founded in 2017 by Leo Ayzenshtat, announced that its PecanPi USB/SPDIF has now received Roon Tested certification from Roon Labs. The PecanPi USB/SPDIF is an ultra-high performance DAC and headphone amplifier that works with USB and S/PDIF inputs. This DAC uses the company’s highly reviewed dual monaural Burr-Brown chip design to deliver very impressive performance as well as sonic accuracy.

Searching for a Unicorn Part 2: Generating a Good Signal Source

January 27, 2021 by Brian Lowe

Searching for a Unicorn Part 2: Generating a Good Signal Source

In this second article, Brian Lowe (Belleson LLC) continues his search for the Unicorn of "Measuring Voltage Regulator Ripple Rejection," this time focusing on the test fixtures. Testing a voltage regulator with exceptionally good performance requires an even more exceptional signal source and measurement setup to measure sub-microVolt ripple across a wide frequency range. Complementing the final article, Jan Didden, offers an informative sidebar about super regulators. This article was originally published in audioXpress, June 2019.

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

January 20, 2021 by Brian Lowe

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

In this article Brian Lowe shares a fascinating journey in his search for a "Unicorn" that is measuring voltage regulator ripple rejection - or power supply rejection ratio (PSRR). Lowe is the founder and principle engineer at Belleson, LLC, and he has devoted a lot of time to this fascinating "quest." This article was originally published in audioXpress, May 2019.

The Audio Technologies That Matter More Than Ever in audioXpress February 2021

January 11, 2021 by audioXpress Staff

The Audio Technologies That Matter More Than Ever in audioXpress February 2021

audioXpress February 2021 explains why Microphones have gained Essential Status, and how microphones have a foundational contribution to voice front-ends. Erica Yorga details how Thousands of Virtual Microphones can solve audio conferencing challenges, and Mike Meechan explains how to design high-performance microphone preamplifiers. Brent Butterworth reviews the Widex Moment mRIC RD hearing aids to understand the differences and similarities in the critical sound experience. Michael Steffes explains how to increase the output current for an audio op-amp, and Andrew C. Russell details the X-Altra, a high-performance MC/MM phono equalizer DIY project. Now available in print and digital.

Khadas Tone2 Pro ESS-Based USB-C Audio DAC and Headphone Preamp Now Available

December 14, 2020 by audioXpress Staff

Khadas Tone2 Pro ESS-Based USB-C Audio DAC and Headphone Preamp Now Available

Khadas, a company focused on high performance single board computers for makers and developers, achieved significant success in audio-focused products, particularly with high-resolution capable ESS-based audio DACs. Following earlier success with the Tone range of add-on boards, Khadas embarked on a more ambitious project with the Tone2 Pro, which is the company's first finished product, mandatory to support MQA hardware decoding. Khadas still intends to launch a Tone2 (non-Pro) version as a DIY Kit in the future, without MQA support.

Elliptic Labs Expands its Ultrasound Sensing Framework to More Devices and Mobile Platforms

November 19, 2020 by Joao Martins

Elliptic Labs Expands its Ultrasound Sensing Framework to More Devices and Mobile Platforms

Norwegian company Elliptic Labs has successfully introduced its ultrasound sensing technology to the market, leveraging early agreements with major chip suppliers to the IT and mobile industries. Following partnerships with Texas Instruments, Infineon, Knowles, Cirrus Logic and AAC Technologies, at the implementation level, Elliptic Labs this year expanded its support directly with chipset manufacturers ARM, Intel, Qualcomm and more recently MediaTek. And the company's efforts in ultrasound-based sensing are just in early stages.

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