SM1211E915 Semtech, SM1211E915 Datasheet - Page 12
SM1211E915
Manufacturer Part Number
SM1211E915
Description
Dev Kit Accessory
Manufacturer
Semtech
Specifications of SM1211E915
Modulation Type
FSK, OOK
Data Rate Max
200Kbps
Frequency Range
902MHz To 928MHz
Supply Voltage Range
2.1V To 3.6V
Module Interface
SPI
Supply Current
25mA
Accessory Type
RF Module
Sensitivity
-105dBm
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Package Type
TQFN EP
Operating Supply Voltage (min)
2.1V
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Sensitivity (dbm)
-105dBm
Rohs Compliant
NA
Lead Free Status / RoHS Status
na
Lead Free Status / RoHS Status
na
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3. Architecture Description
This section describes in depth the architecture of this ultra low-power transceiver:
To provide stable sensitivity and linearity characteristics over a wide supply range, the SX1211 is internally
regulated. This internal regulated power supply structure is described below:
Rev 7 – Sept 2
ADVANCED COMMUNICATIONS & SENSING
XTAL_M
XTAL_P
VR_PA
3.1. Power Supply Strategy
RFIO
nd
, 2008
LNA
XO
PA
LO1 Rx
Frequency Synthesizer
Figure 3: SX1211 Detailed Block Diagram
Q
I
LO1 Tx
LO2 Rx
Q
Q
I
I
Page 12 of 92
LO
Generator
RSSI
LO2 Tx
LO2 Tx
I
I
Q
Q
I
Q
LO1 Rx
LO2 Rx
LO1 Tx
LO2 Tx
demod
OOK
demod
FSK
Waveform
generator
BitSync
Control
www.semtech.com
IRQ_0
IRQ_1
TEST(8:0)
MOSI
MISO
SCK
NSS_CONFIG
DATA
PLL_LOCK
NSS_DATA
CLKOUT
SX1211
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