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AS3435 데이터시트 PDF




ams에서 제조한 전자 부품 AS3435은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 AS3435 자료 제공

부품번호 AS3435 기능
기능 Integrated Active Noise Cancelling Solution
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AS3435 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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AS3435 데이터시트, 핀배열, 회로
General Description
Figure 1:
Added Value of Using AS3415/35
Benefits
All ANC Topologies
No mechanical audio bypass switch
Music EQ functionality
AS3415/AS3435
Integrated Active Noise Cancelling
Solution with Bypass Feature
The AS3415/35 are speaker drivers with Ambient Noise
Cancelling function for headsets, headphones or ear pieces.
They are intended to improve quality of e.g. music listening, a
phone conversation etc. by reducing background ambient
noise.
The fully analog implementation allows the lowest power
consumption, lowest system BOM cost and most natural
received voice enhancement otherwise difficult to achieve with
DSP implementations. The device is designed to be easily
applied to existing architectures.
An internal OTP-ROM can be optionally used to store the
microphones gain calibration settings. The AS3415/35 can be
used in different configurations for best trade-off of noise
cancellation, required filtering functions and mechanical
designs.
The simpler feed-forward topology is used to effectively reduce
frequencies typically up to 2-3 kHz. The feed-back topology
with either 1 or 2 filtering stages has its strengths especially at
very low frequencies. The typical bandwidth for a feed-back
system is from 20Hz up to 1 kHz which is lower than the
feed-forward systems.
The filter loop for both systems is determined by
measurements, for each specific headset individually, and
depends very much on mechanical designs. The gain and phase
compensation filter network is implemented with cheap
resistors and capacitors for lowest system costs.
Ordering Information and Content Guide appear at end of
datasheet.
Key Benefits & Features
The benefits and features of AS3415/35, Integrated Active Noise
Cancelling Solution with Bypass Feature are listed below:
Features
Feed Forward, Feed Back and Hybrid
Integrated depletion mode transistors
Ultra flexible low power EQ circuit
ams Datasheet, Confidential: 2014-Jun-13 [v1-30]
AS3415/AS3435 – 1




AS3435 pdf, 반도체, 판매, 대치품
Pin Assignment
Figure 4:
Pin Assignments
Pin Assignment
The AS3415 and AS3435 pin assignments are described below.
Warning: Exposed pad must be connected to VNEG. Exposed pad must NOT be unconnected!
AS3415/AS3435 – 4
ams Datasheet, Confidential: 2014-Jun-13 [v1-30]

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AS3435 전자부품, 판매, 대치품
Absolute Maximum Ratings
Absolute Maximum Ratings
Figure 6:
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. These are
stress ratings only. Functional operation of the device at these
or any other conditions beyond those indicated under
“Operating Conditions” is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Parameter
Min Max Units
Comments
Reference Ground
Defined as in GND
Supply terminals
-0.5 2.0 V Applicable for pin VBAT
Ground terminals
-0.5 0.5 V Applicable for pin AGND
Negative terminals
-2.0 0.5 V Applicable for pins VNEG
Charge Pump pins
Headphone pins
Analog pins
VNEG-0.5
VNEG-0.5
VBAT+0.5
VBAT+0.5
VNEG-0.5 VBAT+0.5
V Applicable for pins CPN and CPP
V Applicable for pins HPR and HPL
Applicable for pins LINL, LINR,
MICL/R, HPR, HPL, QMICL/R,
V QLINL/R, IOPx, QOPx, CPP, CPN,
TRSCL, TRSDA, MICACL, MICACR,
MIXR, MIXL, BPL, BPR and ILED
Control Pins
VNEG-0.5
5
V
Applicable for pins MICS,
ANC/CSDA, MODE/CSCL
Other Pins
Input Current (latch-up immunity)
VNEG-0.5
-100
5
100
V Applicable for pin MICS
mA Norm: JEDEC 17
Continuous Power Dissipation (TA = +70ºC)
Continuous Power Dissipation
- 200 mW PT(1) for QFN32/36 package
Electrostatic Discharge
Electrostatic Discharge HBM
± 2 kV Norm: JEDEC JESD22-A114C
ams Datasheet, Confidential: 2014-Jun-13 [v1-30]
AS3415/AS3435 – 7

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