Audio interface carries data and power using a standard jack

17 May 2017 Electronics Technology

ams has come up with a technology that can carry data and power via a four-pole 3,5 mm audio jack, primarily devised as a way for noise-cancelling headsets to operate without a dedicated battery power supply. The new Accessory Communication Interface (ACI) invented by the company uses the microphone wire – one of four wires in a standard 3,5 mm audio cable – to carry power and bidirectional data with a rate of up to 16 Mbps, as well as digital audio signals.

An ACI equipped ANC headset can perform receive (Rx) noise cancellation and enable transmit (Tx) noise cancellation on voice calls which increases audio quality significantly. The device can use headset-mounted sensors to add features including gesture recognition, proximity sensing, heart rate measurement, temperature sensing and others. Moreover, a display or special light effects can be added to the headset, providing innovative opportunities for differentiation.

The solution consumes 60% less power than USB Type-C systems, keeping the drain on the handset’s battery to a minimum. The ACI system also requires fewer components than a USB Type-C system and therefore keeps system costs low, enabling manufacturers to afford to bundle an ANC headset with a mobile phone. In addition, the system is compatible with legacy headsets that do not have ACI technology.

For more information visit www.ams.com/ACI

Further reading:

Compact direct Time-of-Flight 3D LiDAR module
Altron Arrow Opto-Electronics Electronics Technology AI & ML
The VL53L9 from STMicroelectronics is the first direct Time-of-Flight (dToF) 3D LiDAR all-in-one module in ST’s portfolio, offering a resolution of 2,3K zones, wide field of view, on-chip processing, 100 frames per second, and sensing range from 5 centimeters to 9 meters.

Read more...

---

What happens when trust can no longer live only in software?
Computer/Embedded Technology Electronics Technology
[Sponsored] For years, many enterprise security architectures treated hardware primarily as the execution layer, while software handled authentication, access control and trust decisions.

Read more...

---

140 W USB-C PD reference design
Altron Arrow Electronics Technology
The design has a wide input range of 90 to 264 V AC, 50-60 Hz, and supports an output voltage range of 5 to 28 V (USB-PD 3.1 specification).

Read more...

---

Nanometre-precision piezo actuators
RS South Africa Electronics Technology
TDK Corporation has announced two new piezo actuators that are characterised by a wide dynamic range, a high force-to-volume ratio, but with precision in the nanometre range.

Read more...

---

Webinar: The evolving electrification of the power distribution system
Infineon Technologies UK Electronics Technology
New connected car functionality, along with the necessity to reduce the cost, weight and complexity associated with wire harnesses, has led to the transformation of the power distribution system in automotive engineering.

Read more...

---

Improved MnZn material for power conversion industry
Sivan Electronic Supplies Electronics Technology
Cosmo Ferrites Ltd, a leading manufacturer of soft ferrites, has launched an improved version of CF295 for the power conversion industry.

Read more...

---

Common mode filter for automotive Ethernet
Avnet Abacus Electronics Technology
TDK Corporation has announced the introduction of its new ACT1210E Series common mode filter for automotive Ethernet 10BASE-T1S.

Read more...

---

Energising the industrial edge
Electronics Technology
As if the drive to decarbonise energy as part of sustainability and climate change efforts was not enough, the recent rise in energy prices has brought into sharp contrast the need to re-examine how we generate, distribute, and consume electricity.

Read more...

---

Samsung begins chip production using 3 nm process technology
EBV Electrolink Electronics Technology
The optimised 3 nm process with GAA architecture achieves 45% lower power usage, 23% improved performance and 16% smaller surface area compared to 5 nm process.

Read more...

---

Panasonic releases its updated touch-sensitive knob
Altron Arrow Electronics Technology
Panasonic, in conjunction with Microchip, has launched an update to its existing Magic Knob, a capacitive knob ready for standard touch sensors for use in controlling automotive information displays.

Read more...

---