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
Automated Meter Reading
Wireless Sensor Networks
Home and Building Automation
Wireless Alarm and Security Systems
Industrial Monitoring and Control
KEY PRODUCT FEATURES
+20 dBm - 100 mW Constant RF output vs. Vsupply
+14 dBm high efficiency PA
Programmable bit rate up to 300kbps
High Sensitivity: down to -123 dBm at 1.2 kbps
Bullet-proof front end: IIP3 = -12 dBm
80 dB Blocking Immunity
Low RX current of 9.3 mA, 100nA register retention
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK and OOK modulations
Built-in Bit Synchronizer performing Clock Recovery
Sync Word Recognition
Preamble detection
io-homecontrol® features
115 dB+ Dynamic Range RSSI
Automatic RF Sense with ultra-fast AFC
Packet engine up to 64 bytes with CRC
Built-in temperature sensor and Low Battery indicator
ORDERING INFORMATION
Part Number
Delivery
MOQ / Multiple
SX1232IMLTRT
Tape & Reel
3000 pieces
QFN 24 Package - Operating Range [-40;+85°C]
Pb-free, Halogen free, RoHS/WEEE compliant product
Rev 3 - August 2012
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