AS3418-EWLM datasheet(8/78 Pages) AMSOSRAM

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AS3418

Pin Assignment

Datasheet

• PUBLIC

DS000507

• v4-00 • 2020-Jan-23

│ 7

Pin Number

Pin Name

Pin Type

(1)

Description

GND

ANA IN

VNEG charge pump ground terminal.

VBAT

SUP IN

Positive supply terminal of AS3418.

BPR

ANA IN

Right audio bypass switch input. This pin features a

music bypass function for the right audio channel in

off mode operation in order to replace and external

analog switch.

HPR

ANA OUT

Headphone amplifier output - right channel.

MICACR

ANA OUT

Microphone preamplifier AC coupling ground

terminal. This pin requires a typ. 10µF capacitor

connected to AGND pin.

CPN

ANA OUT

VNEG charge pump negative terminal for flying

capacitor

LINR

ANA IN

Line input - right channel.

LINL

ANA IN

Line input - left channel.

VNEG

SUP OUT

VNEG charge pump output terminal. This output

provides the negative amplifier supply voltage for all

OPAMPs and the headphone amplifier.

QOP1R

ANA OUT

ANC filter OPAMP1 output - right channel

QOP1L

ANA OUT

ANC filter OPAMP1 output - left channel

CPP

ANA OUT

VNEG charge pump positive terminal for flying

capacitor

ANC/

CSDA

DIG IN/OUT

Serial interface data signal line for I2C interface and

alternatively ANC control to enable/disable ANC.

MODE/

CSCL

DIG IN

Serial Interface clock signal line for I2C interface and

alternatively control pin for power up/down and

Monitor mode.

BPL

ANA IN

Left audio bypass switch input. This pin features a

music bypass function for the left audio channel in

off mode operation in order to replace and external

analog switch.

HPL

ANA OUT

Headphone amplifier output - left channel.

MICACL

ANA OUT

Microphone preamplifier AC coupling ground

terminal. This pin requires a typ. 10µF capacitor

connected to AGND pin.

TRSDA

ANA IN

Data input for production trimming. Can be

connected to LINL pin to enable production trimming

via 3.5mm audio jack.

AGND

ANA IN

Analog reference ground. Do not connect this pin to

power or digital ground plane.

TRSCL

ANA IN

Clock input for production trimming. Can be

connected to LINR pin to enable production

trimming via 3.5mm audio jack.

IOP1L

ANA IN

ANC filter OPAMP1 input - left channel

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