All items tagged with Texas Instruments (86)

You Can DIY! The PR-3 - A High-Quality Stereo Preamplifier

May 27, 2021 by George Ntanavaras

You Can DIY! The PR-3 - A High-Quality Stereo Preamplifier

For our readers who like to get hands-on with DIY projects, in this article George Ntanavaras describes the design and the construction of his PR-3 stereo analog preamplifier, offering three high-level unbalanced stereo inputs and two unbalanced stereo outputs. Most of the components for this design are contained on a single PCB. This article was originally published in audioXpress, January 2019.

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Rotel Announces MKII Stereo Preamplifiers with Upgraded Audio Circuits and Components

May 25, 2021 by audioXpress Staff

Rotel Announces MKII Stereo Preamplifiers with Upgraded Audio Circuits and Components

Rotel announced new upgraded MKII versions of two of the companies stereo preamplifiers with the launch of the RC-1590MKII and RC-1572MKII. Both models feature a host of acoustic and performance upgrades with each acoustic circuit having been critically analyzed and significantly improved by leveraging technologies engineered for the award winning Michi series. Both feature a Texas Instruments premium 32-bit/384kHz digital to analog converter (DAC) stage.

Schiit Audio Introduces IEMagni Headphone Amplifier With More Features for IEMs

May 13, 2021 by audioXpress Staff

Schiit Audio Introduces IEMagni Headphone Amplifier With More Features for IEMs

Schiit announced a new model in its Magni line of headphone amplifiers, called IEMagni. This one is black and gray, rather than silver and gray or black and red, like the Magni 3+ and Heresy. The new IEMagni is called that way because it has three gain modes, including negative gain for IEMs, and advanced protection, like DC sense and mute, to protect those same IEMs. It still offers 0dB and +15dB gain and it still has 2400mW RMS output into 32 ohms for hard-to-drive headphones, making it a more versatile Magni.

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.

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