AX-SFJK-API datasheet(1/19 Pages) ONSEMI

Part #	AX-SFJK-API

Description	Ultra-Low Power, AT Command / API Controlled, Sigfox Compliant Transceiver IC for Up-Link and Down-Link

PDF	19 Pages

Scroll/Zoom	100%

Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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1 / 19 page

April, 2019 − Rev. 4

1

Publication Order Number:

AX−SFJK/D

AX-SFJK, AX-SFJK-API

Ultra-Low Power,

AT Command / API Controlled,

Sigfox) Compliant

Transceiver IC for Up-Link

and Down-Link

OVERVIEW

Circuit Description

AX−SFJK and AX−SFJK−API are ultra−low power

single chip solutions for a node on the Sigfox network with

both up− and down−link functionality. The AX−SFJK chip

is delivered fully ready for operation and contains all the

necessary firmware to transmit and receive data from the

Sigfox network in Japan (SIGFOX RCZ3a region). It

connects to the customer product using a logic level RS232

UART. AT commands are used to send frames and configure

radio parameters.

The AX−SFJK−API variant is intended for customers

wishing to write their own application software based on the

AX−SF−LIB−1−GEVK library.

Features

Functionality and Ecosystem

• Sigfox up−link and down−link functionality controlled

by AT commands or API

• The AX−SFJK and AX−SFJK−API ICs are part of a

whole development and product ecosystem available

from ON Semiconductor for any Sigfox requirement.

Other parts of the ecosystem include

♦ Ready to go development kit

DVK−SFJK−[API]−1−GEVK including a 2 year

Sigfox subscription

♦ Sigfox Ready® certified reference design for the

AX−SFJK and AX−SFJK−API ICs

General Features

• QFN40 5 mm x 7 mm package

• Supply range 1.8 V*−3.6 V

• −40°C to 85°C

• Temperature sensor

• Supply voltage measurements

*The device is operational from 1.8 V to 3.6 V. However, a supply

voltage below 2.0 V is considered an extreme condition.

Details see Table 4.

• 10 GPIO pins

♦ 2 GPIO pins with selectable voltage measure

functionality, differential (1 V or 10 V range) or

single ended (1 V range) with 10 bit resolution

♦ 2 GPIO pins with selectable sigma delta DAC

output functionality

♦ 2 GPIO pins with selectable output clock

♦ 3 GPIO pins selectable as SPI master interface

♦ Integrated RX/TX switching with differential

antenna pins

Power Consumption

• Ultra−low Power Consumption:

♦ Charge required to send a Sigfox OOB packet at

13 dBm output power: 0.28 C

♦ Deep Sleep mode current: 100 nA

♦ Sleep mode current: 1.6

mA

♦ Standby mode current: 0.5 mA

♦ Continuous radio RX−mode at 922.2 MHz:

15 mA

♦ Continuous radio TX−mode at 923.2 MHz

45 mA @ 13 dBm

High Performance Narrow−band Sigfox RF Transceiver

• Receiver

♦ Carrier frequency 922.2 MHz

♦ Data rate 600 bps FSK

♦ Sensitivity

−126 dBm @ 600 bps, 922.2 MHz, GFSK

♦ 0 dBm maximum input power

• Transmitter

♦ Carrier frequency 923.2 MHz

♦ Data rate 100 bps PSK

♦ High efficiency, high linearity integrated power

amplifier

♦ Maximum output power 13 dBm

Applications

Sigfox networks up−link and down−link.

www.onsemi.com

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AX-SFJK-API Datasheet(PDF) 1 Page - ON Semiconductor

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