XE1202AI027TRLF Semtech, XE1202AI027TRLF Datasheet - Page 3

• Manufacturer Part Number: XE1202AI027TRLF
• Description: Narrow Band 433/868/915MHz RF Transceiver
• Manufacturer: Semtech

The XE1202A TrueRF™ UHF Transceiver IC provides a single chip solution intended for use as a low cost FSK
transceiver to establish a frequency-agile, half-duplex, bi-directional RF link, with non-return to zero data coding.
The device is available in an LQFP44 package and is designed to provide a fully functional multi-channel FSK
transceiver. It is intended for applications in the 433 and 868 MHz European bands and the North American 902-
928 MHz ISM band. The single chip transceiver operates down to 2.4 V and provides low power consumption
solutions for battery-operated and power sensitive applications. Thanks to the low external components count, the
XE1202A is ideal for small size, low-cost UHF links. Its reference board has no tunable components, which
facilitates high volume cost sensitive production.
The XE1202A TrueRF™ can easily be interfaced to a controller such as the XEMICS’ XE8000 Series of ultra low-
power microcontrollers. The XE1202A TrueRF™ serial control registers are programmed by the MCU and the MCU
manages the communication protocol.
1 Functional Block Diagram
© Semtech 2006
RFOUT
RFOUT
RFA
RFA
RFB
RFB
LNA
LNA
LO
LO
Buff.
Buff.
PA
PA
Shifter
Shifter
Phase
Phase
VCO
VCO
divider
divider
Prog.
Prog.
Q
Q
I
I
Figure 1: XE1202A TrueRF™ block diagram
AMP
AMP
AMP
AMP
PFD
PFD
BPF
BPF
BPF
BPF
4
Oscillator
Oscillator
RSSI
RSSI
/n Synthesizer
/n Synthesizer
modulator
modulator
AMP
AMP
AMP
AMP
XE1202A TrueRF™
Clock Out
Clock Out
IAmp
IAmp
/n
/n
Limiter
Limiter
Limiter
Limiter
FEI
FEI
QAmp
QAmp
Demod.
Demod.
FSK
FSK
Recognition
Recognition
Control
Control
Pattern
Pattern
Logic
Logic
POR
POR
I Ref
I Ref
Sync.
Sync.
Bit
Bit
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SI
SI
MODE 0
MODE 0
MODE 1
MODE 1
SO
SO
EN
EN
DATAIN
DATAIN
DCLK
DCLK
PATTERN
PATTERN
MODE 2
MODE 2
SCK
SCK
DATAOUT
DATAOUT
SCAN
SCAN