SX1232 Datasheet, PDF (1/97 Pages) Semtech Corporation – High Link Budget Integrated UHF Transceiver

SX1232
WIRELESS & SENSING
SX1232 - 868 & 915MHz Ultra Low Power
High Link Budget Integrated UHF Transceiver
DATASHEET
VBAT1&2
VR_ANA
V R_DIG
Pow erDistributionSystem
RC
Oscillator
LNA
Σ/Δ
Single to
Mixers
Modulators
Dif f er ential
RFI
GND
RFO
VR_PA
PA_BOOST
PA0
Ramp &
Control
PA1&2
T ank
Inductor
Loop
Filter
Divisionby
2, 4 or 6
Frac-NPLL
Synthesizer
XO
32 MHz
XTAL
RSSI
AFC
GND
RESET
SPI
RXTX
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
GENERAL DESCRIPTION
The SX1232 is a fully integrated ISM band transceiver
optimized for use in the (EN 300 220-1) 868 MHz band in
Europe and the (FCC Part 15) 915 MHz band in the US with
a minimum of external components. It offers a combination
of high link budget and low current consumption in all
operating modes. The 143 dB link budget is achieved by a
low noise CMOS receiver front end and up to +20 dBm of
transmit output power. A pair of internal power amplifiers are
provided permitting either fully regulated - for constant RF
performance, or direct supply connection - for optimal
efficiency. This makes SX1232 ideal for either M2M
applications powered by alkaline battery chemistries or long
battery life metering applications using Lithium battery
chemistries.
The Low-IF architecture of the SX1232 sees fast transceiver
start times and demodulation predicated towards low
modulation index and gaussian filtered spectrally efficient
modulation formats.
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
KEY PRODUCT FEATURES
Š +20 dBm - 100 mW Constant RF output vs. Vsupply
Š +14 dBm high efficiency PA
Š Programmable bit rate up to 300kbps
Š High Sensitivity: down to -123 dBm at 1.2 kbps
Š Bullet-proof front end: IIP3 = -12 dBm
Š 80 dB Blocking Immunity
Š Low RX current of 9.3 mA, 100nA register retention
Š Fully integrated synthesizer with a resolution of 61 Hz
Š FSK, GFSK, MSK, GMSK and OOK modulations
Š Built-in Bit Synchronizer performing Clock Recovery
Š Sync Word Recognition
Š Preamble detection
Š io-homecontrol^® features
Š 115 dB+ Dynamic Range RSSI
Š Automatic RF Sense with ultra-fast AFC
Š Packet engine up to 64 bytes with CRC
Š Built-in temperature sensor and Low Battery indicator
ORDERING INFORMATION
Part Number
Delivery
MOQ / Multiple
SX1232IMLTRT
Tape & Reel
3000 pieces
Š QFN 24 Package - Operating Range [-40;+85°C]
Š Pb-free, Halogen free, RoHS/WEEE compliant product
Rev 3 - August 2012
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