SX1210 SEMTECH [Semtech Corporation], SX1210 Datasheet - Page 17
![no-image](/images/no-image-200.jpg)
SX1210
Manufacturer Part Number
SX1210
Description
Ultra-Low Power Integrated UHF Receiver
Manufacturer
SEMTECH [Semtech Corporation]
Datasheet
1.SX1210.pdf
(73 pages)
- Current page: 17 of 73
- Download datasheet (2Mb)
The SX1210 is set to receive mode when MCParam_Chip_mode = 011.
The SX1210 receiver employs a super-heterodyne architecture. Here, the first IF is 1/9
(approximately 100MHz). The second down-conversion down-converts the I and Q signals to base band in the
case of the FSK receiver (Zero IF) and to a low-IF (IF2) for the OOK receiver.
After the second down-conversion stage, the received signal is channel-select filtered and amplified to a level
adequate for demodulation. Both FSK and OOK demodulation are available. Finally, an optional Bit Synchronizer
(BitSync) is provided, to be supply a synchronous clock and data stream to a companion uC in Continuous mode,
Rev 2– Sept 8
ADVANCED COMMUNICATIONS & SENSING
3.3. Receiver Description
LNA
RF
e
qual to fo
in FSK
IF2<0
mode
3.3.1. Architecture
th
, 2008
First down-
conversion
LO1 Rx
in FSK
IF2=0
mode
0
0
down-conversion
Second
down-conversion
Second
IF1
Second down-
≈100MHz
≈100MHz
conversion
LO2
IF1
Rx
IF1
LO2 Rx
LO2 Rx
Figure 10: OOK Receiver Setting
Figure 8: Receiver Architecture
Figure 9: FSK Receiver Setting
RSSI
Page 17 of 73
down-conversion
down-conversion
First
First
Baseband, IF2 in OOK
demod
demod
OOK
FSK
frequency
frequency
Image
Image
synchronizer
Bit
LO1 Rx
LO1 Rx
th
of the RF frequency
Channel
Channel
Control logic
-Pattern recognition
-FIFO handler
-SPI interface
-Packet handler
www.semtech.com
SX1210
Frequency
Frequencyl
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