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AS3418

Pin Assignment

Datasheet

• PUBLIC

DS000507

• v4-00 • 2020-Jan-23

│ 8

Pin Number

Pin Name

Pin Type

(1)

Description

QMICL

ANA OUT

ANC microphone preamplifier output - left channel

MICL

ANA IN

ANC microphone preamplifier input - left channel

MICS

SUP OUT

Microphone Supply output to source analog ECM

via a bias resistor or MEMs microphones. This pin

needs an output blocking capacitor with 4.7µF.

MSUP

SUP IN/OUT

In default configuration a charge pump output that

provides the power for the low noise microphone

supply LDO. The internal charge pump can also be

disabled the MSUP serves as a supply input

terminal to source the low noise microphone supply

LDO.

ILED

ANA IN

Current sink input for on-indication LED. The

Cathode of an LED can be directly connected to this

terminal without the need of an external current

limitation resistor.

(1)

Explanation of abbreviations:

ANA IN

Analog Input

ANA OUT

Analog Output

DIG IN

Digital Input

SUP IN/OUT

Supply input or supply output pad

SUP IN

Supply input terminal

SUP OUT

Supply output terminal

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