SX1243IULTRT Просмотр технического описания (PDF) - Semtech Corporation

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SX1243IULTRT

Low Cost Low Current Integrated Transmitter 310 to 928MHz Frequency Agile

Semtech Corporation 

WIRELESS & SENSING

SX1243

Integrated Transmitter IC

DATASHEET

Symbol

FXOSC

Description

Crystal Oscillator Frequency

DFXOSC Frequency Variation of the XOSC

Timing Specifications

TS_TR

Time from Sleep to Tx mode

TS_HOP0 Channel hop time in Band 0

TS_HOP1 Channel hop time in Band 1

TOFFT

Timer from Tx data activity to

Sleep

RAMP

PA Ramp up and down time

T_START Time before CTRL pin mode

selection.

Conditions

Min

-

-

-

No crystal contribution

-

XTAL dependant, with spec’d XTAL

-

315 to 390 MHz -

Maximum hop of 26 MHz*** -

Programmable -

-

-

Time from power on to sampling of

-

CTRL **

Typ

Max Unit

22

- MHz

24

- MHz

26

- MHz

-

+/-25 ppm

650

250

200

2

20

20

200 us

+ TS_OSC

2000 us

500 us

400 us

- ms

- ms

- us

- ms

* With different matching networks

** The oscillator startup time, TS_OSC, depends on the electrical characteristics of the crystal

*** From the last CTRL falling edge of the Frequency change instruction to transmitter ready (PA ramp up finished)

SX1243, Rev 3, May 2012

©2012 Semtech Corporation

Page 7

www.semtech.com

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