AX5243 datasheet(5/65 Pages) ONSEMI

5 / 65 page

Table of Contents

www.onsemi.com

AX5243

1. Overview

1.1. Features

Advanced multi-channel narrow-

band single chip UHF transceiver

(FSK/MSK/4-FSK/GFSK/GMSK/

ASK/AFSK/FM/PSK)

Low-Power



9.5 mA @ 868 MHz and 433 MHz

6.5 mA @ 169 MHz



TX at 868 MHz

7.5 mA @ 0 dBm

16 mA @ 10 dBm

48 mA @ 16 dBm



50 nA deep sleep current



500 nA power-down current with low

frequency duty cycle clock running

Extended supply voltage range



1.8 V - 3.6 V single supply

High sensitivity / High selectivity

receiver



Data rates from 0.1 kbps to 125 kbps



Optional Forward Error Correction

(FEC)



Sensitivity without FEC

–135 dBm @ 0.1 kbps, 868 MHz, FSK

–126 dBm @

1 kbps, 868 MHz, FSK

–117 dBm @

10 kbps, 868 MHz, FSK

–107 dBm @ 100 kbps, 868 MHz, FSK

–105 dBm @ 125 kbps, 868 MHz, FSK

–138 dBm @ 0.1 kbps, 868 MHz, PSK

–130 dBm @

1 kbps, 868 MHz, PSK

–120 dBm @

10 kbps, 868 MHz, PSK

–109 dBm @ 100 kbps, 868 MHz, PSK

–108 dBm @ 125 kbps, 868 MHz, PSK



Sensitivity with FEC

–137 dBm @ 0.1 kbps, 868 MHz, FSK

–122 dBm @

5 kbps, 868 MHz, FSK

–111 dBm @ 50 kbps, 868 MHz, FSK



High selectivity receiver with up to 45

dB adjacent channel rejection



0 dBm maximum input power



> +/- 10% data-rate error tolerance



Short preamble modes allow the

receiver to work with as little as 16

preamble bits



Fast state switching times

200 s TX  RX switching time

62 s RX  TX switching time

Transmitter



Data-rates from 0.1 kbps to 125 kbps



High efficiency, high linearity

integrated power amplifier



Maximum output power

16 dBm @ 868 MHz

16 dBm @ 433 MHz

16 dBm @ 169 MHz



Power level programmable in 0.5 dB

steps



GFSK shaping with BT=0.3 or BT=0.5



Unrestricted power ramp shaping

Frequency Generation



Configurable for usage in 27 MHz –

1050 MHz bands



RF carrier frequency and FSK

deviation programmable in 1 Hz steps



Ultra fast settling RF frequency

synthesizer for low-power

consumption



Fully integrated RF frequency

synthesizer with VCO auto-ranging

and band-width boost modes for fast

locking



Configurable for either fully

integrated VCO, internal VCO with

external inductor or fully external

VCO



Configurable for either fully

integrated or external synthesizer

loop filter for a large range of

bandwidths



Channel hopping up to 2000 hops/s



Automatic frequency control (AFC)

Flexible antenna interface



Integrated RX/TX switching with

differential antenna pins

Wakeup-on-Radio



640 Hz or 10 kHz lowest power wake-

up timer



Wake-up time interval programmable

between 98 s and 102 s

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