SM1211E915 Semtech, SM1211E915 Datasheet - Page 12

• 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

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
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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