SM1211E915TOPIC Semtech, SM1211E915TOPIC Datasheet - Page 12

• Manufacturer Part Number: SM1211E915TOPIC
• Description: KIT PICTAIL EXT FOR SX1211
• Manufacturer: Semtech
• Type: Transceiver, UHFr

Specifications of SM1211E915TOPIC

• Frequency: 915MHz
• For Use With/related Products: SX1211
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
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IRQ_0
IRQ_1
TEST(8:0)
MOSI
MISO
SCK
NSS_CONFIG
DATA
PLL_LOCK
NSS_DATA
CLKOUT
SX1211