SX1239 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1239

Low Power Integrated UHF Receiver

Semtech Corporation 

SX1239

ADVANCED COMMUNICATIONS & SENSING

SX1239 Receiver

Low Power Integrated UHF Receiver

DATASHEET

RFIN

VBAT1&2

VR_ANA

VR_DIG

Power Distribution System

LNA

Σ/Δ

Single to

Mixers

Modulators

Differential

RC

Oscillator

RESET

SPI

Division by

2, 4 or 6

RSSI

AFC

GND

Tank

Inductor

Loop

Frac-N PLL

NC

Filter

Synthesizer

NC

NC

XO

32 MHz

DIO0

DIO1

DIO2

DIO3

DIO4

DIO5

XTAL

GENERAL DESCRIPTION

The SX1239 is a highly integrated RF receiver capable of

operation over a wide frequency range, including the 433,

868 and 915 MHz license-free ISM (Industry Scientific and

Medical) frequency bands. Its highly integrated architecture

allows for a minimum of external components whilst

maintaining maximum design flexibility. All major RF

communication parameters are programmable and most of

them can be dynamically set. The SX1239 offers the unique

advantage of programmable narrow-band and wide-band

communication modes without the need to modify external

components. The SX1239 is optimized for low power

consumption while offering high sensitivity and channelized

operation. TrueRF™ technology enables a lowcost external

component count (elimination of the SAW filter) whilst still

satisfying ETSI and FCC regulations.

APPLICATIONS

Š Automated Meter Reading

Š Wireless Sensor Networks

Š Home and Building Automation

Š Wireless Alarm and Security Systems

Š Industrial Monitoring and Control

GND

KEY PRODUCT FEATURES

Š High Sensitivity: down to -120 dBm at 1.2 kbps

Š High Selectivity: 16-tap FIR Channel Filter

Š Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm,

80 dB Blocking Immunity, no Image Frequency response

Š Low current: Rx = 16 mA, 100nA register retention

Š Constant RF performance over voltage range of chip

Š FSK Bit rates up to 300 kb/s

Š Fully integrated synthesizer with a resolution of 61 Hz

Š FSK, GFSK, MSK, GMSK and OOK demodulation

Š Built-in Bit Synchronizer performing Clock Recovery

Š Incoming Sync Word Recognition

Š 115 dB+ Dynamic Range RSSI

Š Automatic RF Sense with ultra-fast AFC

Š Packet engine with CRC, AES-128 encryption and 66-

byte FIFO

Š Built-in temperature sensor and Low Battery indicator

ORDERING INFORMATION

MARKETS

Š Europe: EN 300-220-1

Š North America: FCC Part 15.247, 15.249, 15.231

Š Narrow Korean and Japanese bands

Part Number

SX1239IMLTRT

Delivery

Tape & Reel

MOQ / Multiple

3000 pieces

Š QFN 24 Package - Operating Range [-40;+85°C]

Š Pb-free, Halogen free, RoHS/WEEE compliant product

Rev 3 - Jan 2011

Page 1

www.semtech.com

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