Active Noise Cancellation www.ams.com/ANC AS3412 – World’s smallest high-performance ANC solution - Latest achievement in the field of high-tech ANC solutions - Cost-effective design is the best fit for bundling headsets due to the high system integration - WL-CSP package 2.2x2.2mm enables ultra-small foot print - Eco-friendly ANC architecture has the lowest power consumption on the market We provide innovative analog solutions to the most challenging applications in sensor and sensor interfaces, power management, and wireless. General Description The family of high-performance ANC solutions is now replenished with the latest ultrasmall design AS3412. Active Noise Cancellation technology maximizes the end-user experience in today’s advanced world of mobile communications, enabling crystal clear sound during phone conversations or music listening regardless of the surrounding environment noise level. The AS3412 is targeting feed-forward topology and is able to effectively reduce ambient noise up to 3 kHz. Based on over six years of continuous ANC product development experience combining an innovative approach with best-in-class systems expertise, ams delivers application flexibility, advanced support and high performance expected from an industry leader. Highly integrated system in combination with lowest power consumption on the market plus a cost-effective price model makes the AS3412 ideally suited for smartphones or other mobile devices. Applications Features - Perfect fit for bundled headsets - Stereo in-ear headsets and earpieces - WL-CSP package 2.2x2.2mm; 0.4mm pitch - Up to 30 dB noise cancellation - Power supply range (1.65V-1.8V) - Unique integrated Bypass (1.5Ohm switch, active unpowered) - Low power (<10mW) - Audio quality SNR (112,5 dB) - High performance true ground headphone amplifier - 2x34mW, 0.1% THD+N @ 32Ohm load, 1.8V supply - Up to 90mW output power in differential output operation - Monitor Mode - I2C interface - Full digital control Benefits - Superior audio quality - Ultra-compact housing - High system integration - Easy implementation - No extra mechanical switches - Unparalleled battery life Typical Noise Cancelling Performance Block Diagram CFL Y CVNEG VNEG VMIC CMICL CPP CPN 15 GND VNEG QOP1L IOP1L QMICL MICACL CACL MICL VBAT CVBAT LINL MUTE TRSCL/BPR 5 0 Music Bypass 3x PROM 10 VBAT Charge Pump TRSDA/BPL ANC Performance [dB] ANC Filter Left AS3412 HPL ANC Processing AGND -5 -10 HPR -15 LINR MUTE Music Bypass MICR I2C CMICR ANC/CSDA QOP1R ANC Filter Right MODE/CSCL CACR IOP1R QMICR MICACR On/Off/Monitor/PBO MIC Supply -20 VMIC MICS VMIC CMICS -25 -30 -35 10 100 Frequency [Hz] 1000 10000 www.ams.com [email protected] © 02/2016 by ams Subject to change without notice Headquarters ams AG Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria Phone +43 3136 500-0 Sales Offices Worldwide [email protected] [email protected] [email protected]