SM1211E915 Semtech, SM1211E915 Datasheet - Page 67

• 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

The lowest-power Rx cycle is the following:
Note: If the lock detect indicator is available on an external interrupt pin of the companion uC, it can be used to
optimize TS_FS, without having to wait the maximum specified TS_FS.
Rev 7 – Sept 2
ADVANCED COMMUNICATIONS & SENSING
7.3.1. Optimized Receive Cycle
nd
, 2008
3.0mA typ.
1.3mA typ.
100nA typ.
65uA typ.
SX1211
IDDFS
IDDST
IDDSL
IDDR
IDD
TS_OSC
Set SX1211 in Standby mode
Wait for XO settling
Wait
TS_FS
Wait
Figure 49: Optimized Rx Cycle
Set SX1211 in FS mode
Wait for PLL settling
TS_RE
Wait
Page 67 of 92
Set SX1211 in Rx mode
Wait for Receiver settling
time
Rx
Receiver is ready :
-RSSI sampling is valid after a 1/Fdev period
-Received data is valid
SX1211 can be put in
Any other mode
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SX1211
Time