Si32172/3/5

36

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Rev. 1.0 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 31, 2021

31

SRINGAC

RING AC Sense Input

Analog ac input used to detect voltage on the RING lead

32

SRINGDC

RING DC Sense Input

Analog current input used to sense voltage on the RING lead.

33

GPIO2

SRINGC

General Purpose I/O

RING Coarse Sense Input.

Voltage sensing outside protection circuit.

34

GPIO1

STIPC

General Purpose I/O

TIP Coarse Sense Input.

Voltage sensing outside protection circuit.

35

NC

No Connect

This pin should be left unbiased.

36

VBAT

Battery Voltage Supply

Connect to battery supply from dc-dc converter.

37

NC

No Connect

This pin should be left unbiased.

38

RING

RING Terminal

Connect to the RING lead of the subscriber loop.

39

NC

No Connect

This pin should be left unbiased.

40

TIP

TIP Terminal

Connect to the TIP lead of the subscriber loop.

41

NC

No Connect

This pin should be left unbiased.

42

NC

No Connect

This pin is internally connected to EPAD2 and should be left unbiased.

—EPAD1

Exposed Paddle

Connect to ground.

—EPAD2

Exposed Paddle

Connect to electrically-isolated low thermal impedance inner layer and/or backside

thermal plane using multiple thermal vias.

Pin #

Pin Name

Description