AS3412 datasheet(5/85 Pages) AMSOSRAM

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[v1-00] 2016-Apr-06

AS3412 − Pin Assignment

TRSCL/

BPR

ANA

IN/OUT

Clock input for production trimming. Can be connected to

LINR pin to enable production trimming via 3.5mm audio

jack. Furthermore this pin features also music bypass function

for the right audio channel in off mode operation in order to

replace an external analog switch.

LINR

ANA IN

Line input EQ right channel.

ANC / CSDA

DIG IN

Serial interface data for I²C interface and ANC control to

enable/disable ANC.

MODE /

CSCL

DIG IN

Serial Interface Clock for I²C interface and control pin for

power up/down and Monitor mode.

MICACL

ANA OUT

Microphone preamplifier AC coupling ground terminal. This

pin requires a 10μF capacitor connected to AGND pin.

MICL

ANA IN

ANC microphone input left channel.

MICS

SUP OUT

Microphone Supply output. This pin needs an output

blocking capacitor with 10μF.

MICR

ANA IN

ANC microphone preamplifier input right channel.

MICACR

ANA OUT

Microphone preamplifier AC coupling ground terminal. This

pin requires a 10μF capacitor connected to AGND pin.

QMICR

ANA OUT

ANC microphone preamplifier output right channel.

IOP1R

ANA IN

ANC filter OpAmp1 input right channel.

QOP1R

ANA OUT

ANC filter OpAmp1 output right channel.

HPL

ANA OUT

Headphone amplifier output left channel

HPR

ANA OUT

Headphone amplifier output right channel

VBAT

SUP IN

Positive supply terminal of IC.

CPP

ANA OUT

VNEG charge pump flying capacitor positive terminal.

GND

VNEG charge pump ground terminal. Has to be connected to

AGND pin. For better noise performance a star shaped ground

concept is the preferred option to connect these pins

together.

CPN

ANA OUT

VNEG charge pump flying capacitor negative terminal.

VNEG

SUP OUT

VNEG charge pump output.

QOP1L

ANA IN

Filter OpAmp1 output left channel.

IOP1L

ANA OUT

Filter OpAmp1 input left channel.

QMICL

SUP IN

ANC microphone preamplifier output left channel.

Pin Name

Pin Number

Pin Type

Description

AS3412 Datasheet(PDF) 5 Page - ams-OSRAM AG

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