STMicroelectronics

STMicroelectronics, Europe’s largest semiconductor company, has licensed SoundChip electronic IP to create a range of highly innovative noise cancelling audio engines and MEMS microphones that enable headphones and earphones with best-in-class and lowest power feed-forward, feedback and hybrid noise cancelling capabilities.

STANC0

Low-power, digitally-controlled stereo audio engine combining hybrid ANC with advanced situational awareness.

Product description

STANC0 integrates within a 4.5mm x 4.5mm x 1.4mm VFBGA-64 package SoundChip’s patented SoundCore™ R3 zero-latency digitally-programmable analog processing technology to enable the delivery of Hi-Res audio and class-leading HD-PA®-compliant active noise cancellation in advanced stereo headphones, as well as other innovative sound features, such as Auto-ANC and Smartaware.

STANC0’s fully integrated Soundcore R3 audio processing facilitates the combination of pre-compensated stereo program audio with two filtered microphone signals (per channel) to render a compelling noise-free listening experience with appropriately configured headphones and earphones. And whereas alternative analog-based designs require many low-precision, discrete passive components to form their filters, STANC0 integrates its processing on-chip to reduce application area, increase filter precision and lower system cost.

To provide designers with maximum flexibility, STANC0 can be configured for feedback, feed-forward or hybrid noise cancelling and supports digitally-controlled awareness and talk-through features. Moreover, unlike competing digital codecs, which tend to exhibit high current draw, STANC0 consumes only 5.3 mA at an operating voltage of 3.3V.

Features
  • 01

    Soundcore™ R3+ zero-latency, digitally-controlled analog audio processing architecture

  • 02

    Hi-Res™, HD-PA®-compliant stereo audio playback with 100 dB dynamic range

  • 03

    Integrated feedback (FB) and feed-forward (FF) noise cancelling processing with possibility of off-chip expansion

  • 04

    Integrated and digitally-controlled audio compensation filters and talk-through

  • 05

    Built-in capacitor-less, high-efficiency, Class-AB amplifier delivering 30mW per channel into 32 Ohm load

  • 06

    5.3 mA (17.5 mW) quiescent current during stereo hybrid-ANC operation

  • 07

    4.5mm (l) x 4.5mm (w) x 1.4mm (h) LFBGA-64 package

Benefits
  • 01

    Compact, highly integrated circuit with low external part count

  • 02

    Enables class-leading, low-power hybrid noise cancelling

  • 03

    Enables natural talk-through and advanced situational awareness features

  • 04

    Delivers an uncompromising, high definition sound reproduction

  • 05

    Dynamically configurable by connected apps/software

  • 06

    Optimised for 'smart' wireless headset applications

STANC2

Compact, low-power, digitally-controlled stereo audio engine combining hybrid ANC with advanced situational awareness.

Product description

STANC2 integrates within the more compact 3.6mm x 3.6mm x 1.0mm VFBGA-64 package SoundChip’s patented SoundCore™ R4 zero-latency digitally-controlled analog processing technology to enable the delivery of Hi-Res audio and class-leading HD-PA®-compliant active noise cancellation in advanced stereo headphones, as well as other innovative sound features, such as Auto-ANC and Smartaware.

STANC2’s fully integrated Soundcore R4 audio processing facilitates the combination of pre-compensated stereo program audio with two filtered microphone signals (per channel) to render a compelling noise-free listening experience with appropriately configured headphones and earphones. Soundcore R4 evolves SoundChip’s successful Soundcore R3 architecture one step further to deliver improved click and pop noise suppression during mode transitions, reduced quiescent noise and thus increased dynamic range, and audio processing that is more efficient and thus lower power. 

To provide designers with maximum flexibility, STANC2 can be configured for feedback, feed-forward or hybrid active noise cancelling and supports digitally-controlled awareness and talk-through features. Moreover, unlike competing digital codecs, which exhibit high current draw, STANC2 consumes only 5.1 mA at an operating voltage of 3.3V.

Features
  • 01

    Soundcore™ R4 zero-latency, digitally-controlled analog audio processing architecture

  • 02

    Hi-Res™, HD-PA®-compliant stereo audio playback with 100 dB dynamic range

  • 03

    Integrated feedback (FB) and feed-forward (FF) noise cancelling processing with possibility of off-chip expansion

  • 04

    Integrated and digitally-controlled audio compensation filters and talk-through

  • 05

    Built-in capacitor-less, high-efficiency, Class-AB amplifier delivering 30mW per channel into 32 Ohm load

  • 06

    5.1 mA (16.8 mW) quiescent current during stereo hybrid-ANC operation

  • 07

    3.6mm (l) x 3.6mm (w) x 1.0mm (h) VFBGA-64 package

Benefits
  • 01

    Compact, highly integrated circuit with low external part count

  • 02

    Enables class-leading, low-power hybrid noise cancelling

  • 03

    Enables natural talk-through and advanced situational awareness features

  • 04

    Delivers an uncompromising, high definition sound reproduction

  • 05

    Dynamically configurable by connected apps/software

  • 06

    Optimised for 'smart' wireless headset applications

MP23ABS1

Analog, bottom port MEMS microphone designed for high-performance noise cancelling applications.

Product description

Featuring a flat receiving response to 20Hz, an impressive SNR of >64dB, an AOP of 130dBSPL, and zero-latency output, STMicroelectronics’ MP23ABS1 MEMS microphone is purpose-built for ANC applications, providing the precise and timely measurement of ambient noise conditions to enable the delivery of class-leading hybrid ANC.

Features
  • 01

    Flat 20Hz - 20kHz receiving response: >64dB SNR

  • 02

    High acoustic overload point: 130 dBSPL

  • 03

    Tight sensitivity matching: +/- 1.5 dB

  • 04

    Compact RHLGA package: 3.50 x 2.65 mm

Benefits
  • 01

    Accurate capturing of ambient sound with reduced hiss noise

  • 02

    Robust in high noise environments

  • 03

    Stable end-product manufacturing

  • 04

    Reliable, low-cost assembly