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PDF XE1209 Data sheet ( Hoja de datos )

Número de pieza XE1209
Descripción Ultra Low Power CMOS Transceiver
Fabricantes Semtech Corporation 
Logotipo Semtech Corporation Logotipo



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XE1209
Ultra Low Power CMOS Transceiver
XE1209
30 – 70 kH Ultra Low Power CMOS Transceiver
GENERAL DESCRIPTION
The XE1209 is a CMOS Ultra Low-Power
transceiver for short-range low frequency RF data
communications system. It uses 2-level Continuous
Phase FSK modulation. The receiver section
includes the preamplifier, the down-converter, and
the channel filters, the demodulator and the bit
synchronizer, which delivers synchronized data at
the output. The transmitter section is composed of a
Direct Digital Synthesizer (DDS), and the power
amplifier generating a square-wave output current.
The XE1209 has carrier detector to detect the
presence of a signal at the carrier frequency. The
local clock is based on a 32kHz crystal oscillator and
a PLL to generate the required Local oscillator (LO)
frequency. The XE1209 has a simple interface with
an external microcontroller.
KEY FEATURES
Single chip transceiver
Low cost
Low external component count
Ultra Low Power
- Stand-by mode
- Carrier detection mode
- Low-power receiver mode
Unlicensed frequency band
Short range applications; 1 to 3 meters
APPLICATIONS
Remote control
Short Range Wireless data
Access control
ORDERING INFORMATION
Part number
XE1209C012TRLF
Temperature
range
-10°C to
+60°
Package
SO-20
RoHS compliant
Rev 1 August 2005
www.semtech.com
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XE1209 pdf
XE1209
Ultra Low Power CMOS Transceiver
www.DataSheet4U.com
5 ELECTRICAL SPECIFICATIONS
Electrical specifications are defined for VDD=2.6 V, Temp=25 °C, fc=36.86 kHz, and a data rate of 1820 bit/s, unless
otherwise specified.
Symb
IDDS1
IDDS2
IDD1
IDD2
ISINK
Parameters
Standby current
Standby current
Supply current in carrier
detection mode (M2)
Supply current in receiver
mode (M4)
Sink current transmitter
mode (peak value)
Conditions
Oscillator stopped
Oscillator
active,
VDD=3V, Temp= -10 to
+60°C, unloaded
Temp = -10 to +60 °C
Temp = -10 to +60 °C
Load = resistance of 15
ohms connected between
VDD and pin PAOUT,
programmable through
the 3-wire bus
FREF
FR
PLL reference frequency
PLL frequency
Programmable via 3-wire
bus
RIN
CIN
RFS
RF differential input DC
resistance
RF differential input
capacitance
RF sensitivity
MAXIN
FC
Maximum RF effective
input signal
Transmission carrier
frequency
Rsource=100
BER=10-4
Without any
signal
parasitic
ATT
ATT3
CMRR
DC
BW
DR
FDEV
PDL
Adjacent channel
rejection at f = 30.6 kHz
Adjacent channel
rejection at f = 110.58 kHz
DC Common mode
rejection ratio
Receiver -3dB Bandwidth
Data rate
Frequency deviation
Carrier detector level
At RFSmin
Rsource=100,BER=10-4
At RFSmin
Rsource=100,BER=10-4
At RFSmin
Rsource=100,BER=10-4
FC=36.86 kHz, DSB
FC=36.86 kHz
3 rising edges measured
at output in a 900us time
window
Min
-
-
-
-
82
45
23
5.65
2.60
1.35
-
588.65
719.45
500
-
200
-
-
-
11
-1
30
-
-
-
140
400
Typ
0.15
1
95
200
110
60
30
7.5
3.5
1.80
32.768
589.82
720.90
1000
25
70
-
36.86
45.05
23
3
-
5000
1820
1872
200
500
Max
1
2
120
300
138
75
37
9.35
4.40
2.25
-
591.00
722.35
-
-
-
15
-
-
-
-
-
-
-
-
260
600
Unit
µA
µA
µA
µA
mA
mA
mA
mA
mA
mA
kHz
kHz
kHz
k
pF
µVp
mV
kHz
kHz
dBc
dBc
dB
Hz
bit/s
Hz
µVp
µVp
© Semtech 2005
www.semtech.com
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