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PDF ( 数据手册 , 数据表 ) SX1236

零件编号 SX1236
描述 137 MHz to 1020 MHz Low Power Bi-Band Transceiver
制造商 Semtech Corporation
LOGO Semtech Corporation LOGO 


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SX1236 数据手册, 描述, 功能
WIRELESS & SENSING
SX1236 - 137 MHz to 1020 MHz Low Power Bi-Band Transceiver
SX1236
DATASHEET
GENERAL DESCRIPTION
The SX1236 is a fully integrated ISM band transceiver
capable of bi-band operation in most un-licensed bands in
the sub-GHz space 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 set of
internal power amplifiers are provided permitting either fully
regulated - for constant RF performance, or direct supply
connection - for optimal efficiency. This makes SX1236 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 SX1236 sees fast transceiver
start times and demodulation predicated towards low
modulation index and gaussian filtered spectrally efficient
modulation formats.
This device also support high performance (G)FSK modes
for systems including WMBus, IEEE802.15.4g. The SX1236
delivers exceptional phase noise, selectivity, receiver
linearity and IIP3 for significantly lower current consumption
than competing devices.
KEY PRODUCT FEATURES
143 dB maximum link budget
+20 dBm - 100 mW constant RF output vs. V supply
+14 dBm high efficiency PA
Programmable bit rate up to 300 kbps
High sensitivity: down to -123 dBm
Bullet-proof front end: IIP3 = -11 dBm
Excellent blocking immunity
Low RX current of 10.8 mA, 200 nA register retention
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK and OOK modulation
Built-in bit synchronizer for clock recovery
Preamble detection
127 dB Dynamic Range RSSI
Ultra-fast AFC
Packet engine up to 256 bytes with CRC
Built-in temperature sensor and low battery indicator
ORDERING INFORMATION
APPLICATIONS
Part Number
SX1236IMLTRT
Delivery
T&R
MOQ / Multiple
3000 pieces
QFN 28 Package - Operating Range [-40;+85°C]
Pb-free, Halogen free, RoHS/WEEE compliant product
Automated Meter Reading.
Home and Building Automation.
Wireless Alarm and Security Systems.
Industrial Monitoring and Control
Long range Irrigation Systems
Rev. 1. - December 2013
©2013 Semtech Corporation
Page 1
www.semtech.com







SX1236 pdf, 数据表
SX1236
WIRELESS & SENSING
DATASHEET
1. General Description
The SX1236 is a single-chip integrated circuit ideally suited for today's high performance ISM band RF applications. The
SX1236's advanced feature set includes a state-of-the-art packet engine and top level sequencer. In conjunction with a 64
byte FIFO, these automate the entire process of packet transmission, reception and acknowledgment without incurring the
consumption penalty common to many transceivers that feature an on-chip MCU. Being easily configurable, it greatly
simplifies system design and reduces external MCU workload to an absolute minimum. The high level of integration
reduces the external BOM to passive decoupling and impedance matching components. It is intended for use as a high
performance, low-cost FSK and OOK RF transceiver for robust, frequency-agile, half-duplex, bi-directional RF links. Where
stable and constant RF performance is required over the full operating range of the device down to 1.8V the receiver and
PA are fully regulated. For transmit intensive applications - a high efficiency PA can be selected to optimize the current
consumption.
The SX1236 is intended for applications requiring high sensitivity and low receive current. Coupling the digital state
machine with an RF front end capable of delivering a link budget of 143dB (-123dBm sensitivity in conjunction with
+20dBm Pout). The SX1236 complies with both ETSI and FCC regulatory requirements and is available in a 6 x 6 mm QFN
28 lead package. The low-IF architecture of the SX1236 is well suited for low modulation index and narrow band operation.
1.1. Simplified Block Diagram
Figure 1. Block Diagram
Rev. 1. - December 2013
©2013 Semtech Corporation
Page 8
www.semtech.com







SX1236 equivalent, schematic
WIRELESS & SENSING
SX1236
DATASHEET
IIP2
IIP3_HF
2nd order Input Intercept Point
Unwanted tones are 20 MHz
above the LO
3rd order Input Intercept point
Unwanted tones are 1MHz and
1.995 MHz above the LO
Highest LNA gain
Band 1
Highest LNA gain G1
LNA gain G2, 5dB sensitivity hit
- +55 - dBm
- -11 - dBm
- -6 - dBm
IIP3_LF
BW_SSB
IMR
IMA
DR_RSSI
3rd order Input Intercept point
Unwanted tones are 1MHz and
1.995 MHz above the LO
Single Side channel filter BW
Image Rejection
Image Attenuation
RSSI Dynamic Range
Band 2
Highest LNA gain G1
LNA gain G2, 2.5dB sensitivity hit
- -22 - dBm
- -15 - dBm
Band 3
Highest LNA gain G1
LNA gain G2, 2.5dB sensitivity hit
- -15 - dBm
- -11 - dBm
Programmable
2.7 - 250 kHz
Wanted signal 3dB over sensitivity
BER=0.1%
- 50 - dB
- 57 - dB
AGC enabled
Min - -127 - dBm
Max - 0 - dBm
* RxBw = 83 kHz (Single Side Bandwidth)
** RxBw = 50 kHz (Single Side Bandwidth)
*** RxBw = 250 kHz (Single Side Bandwidth)
2.5.4. FSK/OOK Mode Transmitter
Table 6 Transmitter Specification
Symbol
Description
Conditions
Min Typ Max Unit
RF_OP
RF output power in 50 ohms
on RFO pin (High efficiency PA).
Programmable with steps
Max - +14 - dBm
Min - -1 - dBm
ΔRF_
OP_V
RF output power stability on RFO
pin versus voltage supply.
VDD = 2.5 V to 3.3 V
-
3
- dB
VDD = 1.8 V to 3.7 V
-
8
- dB
RF_OPH
RF output power in 50 ohms, on
PA_BOOST pin (Regulated PA).
Programmable with 1dB steps
Max
Min
-
-
+17
+2
- dBm
- dBm
RF_OPH_ Max RF output power, on
MAX
PA_BOOST pin
High power mode
- +20 - dBm
ΔRF_
OPH_V
RF output power stability on PA_-
BOOST pin versus voltage supply.
VDD = 2.4 V to 3.7 V
-
+/-1
- dB
ΔRF_T
RF output power stability versus
temperature on PA_BOOST pin.
From T = -40 °C to +85 °C
- +/-1 - dB
Rev. 1. - December 2013
©2013 Semtech Corporation
Page 16
www.semtech.com










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