AS3412 Factsheet

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]
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