The TS5510 two-channel analog front end from Triad Semiconductor is a mixed-signal IC designed to handle both low-level microphone inputs and high-level line signals within a single input stage for professional and prosumer audio systems. Based on a current-conveyor architecture, the device supports a total input capture range of 156 dB, greater than 90 dB […]
Audio
Receiver lineup spans 16 – 50 ω impedance options
Same Sky’s Audio Group has expanded its speaker portfolio with additional receiver models intended for over-the-ear applications. The CMR receiver family targets compact mechanical envelopes while providing a wide acoustic output range, with sound pressure levels specified from 103 to 135 dB when measured using an artificial ear. The new receivers are offered in package […]
How op amps work and why you should use them: part 3
Operational amplifiers (op amps) are almost the perfect amplifier. As long as you keep a few important details in mind, their imperfections will seem invisible. In part 1, Equations 2 and 3 used the term AV for the voltage gain of the simple noninverting amplifier shown in Figure 1. The equations use α for the […]
Class-D amplifiers operate at 2 MHz switching frequency to reduce PCB space
STMicroelectronics has revealed new class-D automotive audio amplifiers for smart-cockpit applications, engineered for tiny overall dimensions and with a digital input that simplifies circuit design. The new HFDA80D and HFDA90D extend ST’s family of high-frequency automotive amplifiers, complementing the HFA80A analog-input IC. All the devices operate at a switching frequency of 2MHz to save PCB […]
How op amps work and why you should use them: part 1
Operational amplifiers (op amps) may initially look intimidating, but with a bit of study, they can be easily understood and used in a variety of applications. Op amps can be thought of as a perfect amplifier in a black box. When we create a design using an op amp, we initially presume that the device […]
Infrared preamps improve sensitivity and better reject interference
Vishay Intertechnology, Inc. announced that it has upgraded its VSOP383xx series of preamplifier circuits for infrared (IR) remote control applications in consumer products with the new Cyllene 2 IC. Offered in the 2 mm by 2 mm by 0.76 mm QFN package, the enhanced solutions provide drop-in, plug-and-play replacements for existing devices in the series […]
13 mm x 13 mm surface mount speaker runs at 8 Ohms
Same Sky’s Audio Group announced the addition of two surface mount models to its speakers product portfolio. The CMS-131304-SMT-TR and CMS-151504-SMT-TR are surface-mount miniature speakers, housed in compact 13 x 13 x 4 mm and 15 x 15 x 4 mm square frame packages, respectively. Both models are reflow solder compatible while featuring polyurethane cones and […]
IoT front end module designed in adherence to Thread and Matter
pSemi Corporation announced the introduction of their smallest PA-LNA-SW Internet of Things (IoT) front-end module (FEM): the PE562212. Designed in adherence to the Thread and Matter protocols, industry frameworks that focus on simplifying connected experiences, PE562212 is an ultra-compact multi-protocol 2.4 GHz FEM that enables a variety of connectivity options for IoT devices. With a […]
What are the computational requirements of immersive audio?
There are several ways to implement immersive audio, each with different computational and hardware needs. Calculation of the head-related transfer function (HRTF) is an important aspect of deploying immersive audio. This FAQ begins by detailing what an HRTF is, looks at an open-source program for calculating HRTF, and then considers how cameras and inertial measurement […]
What’s the difference between object- and channel-based audio?
Immersive audio uses various channel- and object-based techniques to deliver a high-quality listening experience. There are three general categories of spatial audio: channel-based audio (CBA), object-based audio (OBA), and scene-based audio (SBA) — that’s the next generation of OBA. CBA is the simplest form of spatial audio, but it’s not immersive. The basic form of […]
