XE1201A
TLA
RFA
RFB
TLB
FILTERING +
IO
OFFSET
REDUCTION
QO
AVDD
AGND
DVDD
DGND
RXD
DEMODULATOR
SYMBOL SYN
CHRO
CLKD
SD
BUS C
ONTROL
POWER MANAGEMEN
T
SC
90 DEG
DE
EN
RF POWER AMP
RFOU
T
RXTX
DDS
TXD
VREF
90 DEG
LO
CLOCK
TPA
TPB
RFGN
D
RFVDD
TKA
TKB
TKC
SWA
SWB
LOGN
D
XTAL
XE1201A 300-500 MHz
Low-Power UHF Transceiver
Features
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very low-power
half-duplex operation
data rate up to 64 kbit/s
high sensitivity
few external components
internal bit synchronizer
3-wire bus for easy microcontroller interface
output power programmable via bus
General Description
The XE1201A is a half-duplex FSK transceiver for
operation in the 433 MHz ISM band (optimized) and in
the 300-500 MHz band. The modulation used is the
Continuous Phase, 2 level Frequency Shift Keying
(CPFSK). The direct conversion (zero IF) receiver
architecture enables on-chip channel filtering.
The XE1201A includes a bit synchronizer so that glitch
free data with synchronized clock can directly be read by
a low cost / low complexity micro-controller. The
transmitted power level can also be controlled via the
bus. The XE1201A meets the I-ETS300-220 standard
and is available in a TQFP32 package.
Applications
telemetry
RF security systems
wireless data link
door openers
remote control
wireless sensing
Quick Reference Data
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supply voltage
RF sensitivity
data rate
transmitted power
2.4 V
-109 dBm
64 kbits/s
+5 dBm
Ordering Information
Part
XE1201AI026TR
Temperature
range
-40 to 70° C
Pin-package
TQFP32
Rev 1 August 2005
www.semtech.com
1
SEMTECH [ SEMTECH CORPORATION ]
