GS3590 datasheet(8/118 Pages) SEMTECH

8 / 118 page

GS3590

Final Data Sheet Rev.4



PDS-061414 September 2017

8 of 118

Semtech

Proprietary & Confidential

www.semtech.com

GPIO2

Digital

Input/Output

Multi-function Control/Status Input/Output 2.

Default function:

Direction = Input



Signal = Set HIGH to put device in sleep

Pin is 1.8V CMOS I/O, please refer to GPIO2_CFG for more information

on how to configure GPIO2.

VCO_FILT

Passive

VCO filter capacitor connection. Decouple to ground. See Section 6.1

Typical Application Circuit for recommended values.

VCC_CORE

Power

Most positive power supply connection for the analogue core.

Connect to 1.8V.

GPIO3

Digital

Input/Output

Multi-function Control/Status Input/Output 3.

Default function:

Direction = Input



Signal = Set HIGH to put device in cable driver mode

Pin is 1.8V CMOS I/O, please refer to GPIO3_CFG for more information

on how to configure GPIO3.

LF+

Passive

Loop filter capacitor connection. Connect to pin 40 through a

capacitor (see Section 6.1 Typical Application Circuit for

recommended values).

LF-

Passive

Loop filter capacitor connection. Connect to pin 39 through a

capacitor (see Section 6.1 Typical Application Circuit for

recommended values).

Tab

—

Central paddle can be connected to ground or left unconnected. Its

purpose is to provide increased mechanical stability. It is not required

for thermal dissipation. It is not recommended to connect the device

ground pins to the central paddle.

Table 1-1: GS3590 Pin Descriptions (Continued)

Pin Number

Name

Type

Description

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