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XE1205 Datasheet PDF - Semtech

Part Number XE1205
Description High Link Budget Integrated UHF Transceiver
Manufacturers Semtech 
Logo Semtech Logo 



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XE1205 datasheet, circuit
XE1205
XE1205
180 MHz – 1GHz
Low-Power, High Link Budget Integrated UHF Transceiver
GENERAL DESCRIPTION
The XE1205 is an integrated transceiver operating in
the 433, 868 and 915 MHz license-free ISM (Industrial,
Scientific and Medical) frequency bands; it can also
address other frequency bands in the 180-1000 MHz
range. Its highly integrated architecture allows for
minimum external components while maintaining
design flexibility. All major RF communication
parameters are programmable and most of them can
be dynamically set. The XE1205 offers the unique
advantage of narrow-band and wide-band
communication, this without the need to modify the
number or parameters of the external components.
The XE1205 is optimized for low power consumption
while offering high RF output power and channelized
operation suited for both the European (ETSI EN 300-
220-1) and the North American (FCC part 15)
regulatory standards. TrueRF™ technology enables a
low-cost external component count (elimination of the
SAW filter) whilst still satisfying ETSI and FCC
regulations.
APPLICATIONS
Narrow-band and wide-band security systems
Voice and data over an RF link
Process and building control
Access control
Home automation
Home appliances interconnection
KEY PRODUCT FEATURES
Programmable RF output power: up to +15 dBm
High Rx sensitivity: down to -121 dBm at 1.2 kbit/s,
-116 dBm at 4.8 kbits.
Low power: RX=14 mA; TX = 62 mA @ 15 dBm
Can accommodate 300-1000 MHz frequency range
Wide band operation: up to 304.7 kbit/s, NRZ coding
Narrow band operation: 25 kHz channels for data
rates up to 4.8 kbit/s, NRZ coding; optional
transmitter pre-filtering to enable adjacent channel
power below -37 dBm at 25 kHz
On-chip frequency synthesizer with minimum
frequency resolution of 500 Hz
Continuous phase 2-level FSK modulation
Incoming data pattern recognition
Built-in Bit-Synchronizer for incoming data and clock
synchronization and recovery
FEI (Frequency Error Indicator) with built-in AFC
RSSI (Received Signal Strength Indicator)
16-byte FIFO for transmit / receive data buffering
and transfer via SPI bus
ORDERING INFORMATION
Part number
Temperature range
XE1205I074TRLF(1) -40 °C to +85 °C
(1) TR refers to tape & reel.
LF refers to Lead Free package.
This device is WEEE and RoHS compliant
Package
VQFN48
Rev 10 December 2008
1
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XE1205 equivalent
XE1205
4 ELECTRICAL CHARACTERISTICS
4.1 ABSOLUTE MAXIMUM OPERATING RANGES
Stresses above the values listed below may cause permanent device failure. Exposure to absolute maximum ratings for
extended periods may affect device reliability.
Symbol
VDDmax
Tmr
ML
Description
Supply voltage
Storage temperature
Receiver input level
Min.
-0.5
-55
Table 2: Absolute Maximum Operation Ranges
The device is ESD sensitive and should be handled with precaution.
4.2 SPECIFICATIONS
4.2.1 Operating Range
Max.
3.9
125
5
Unit
V
°C
dBm
Symbol
VDDop
Trop
Clop
Description
Supply voltage
Temperature
Load capacitance on digital ports
Table 3: Operating Range
Min.
2.4
-40
-
Max.
3.6
85
25
Unit
V
°C
pF
4.2.2 Electrical Specifications
The table below gives the electrical specifications of the transceiver under the following conditions:
Supply Voltage = 3.3V, temperature = 25 °C, 2-level FSK without pre-filtering, fc = 915 MHz, Δf = 5 kHz,
Bit rate = 4.8 kbit/s, BWSSB = 10 kHz, BER = 0.1% (at the output of the bit synchronizer), matched impedances,
environment as defined in section 8, unless otherwise specified.
Symbol Description
IDDSL Supply current in sleep mode
Conditions
Min Typ
- 0.2
Max
1
Unit
uA
IDDST
IDDR
IDDT
Supply current in standby mode
Supply current in receiver mode
Supply current in transmitter mode
Quartz oscillator (39 MHz)
enabled
RFOP = 5 dBm
RFOP = 15 dBm
- 0.85 1.10
- 14 16.5
- 33
40
- 62
75
mA
mA
mA
mA
RFS
RF sensitivity
Mode A
Mode B
- -116 -113
- -102
-99
dBm
dBm
RFS_12
FDA
CCR
IIP3
BW
RF sensitivity at 1.2 kbit/s
Mode A
Mode B
Frequency deviation
Programmable
Co-channel rejection
Input intercept point (from LNA input funw = fLO + 1 MHz and
to base-band filter output)
fLO + 1.995 MHz
Mode A
Mode B
Base band filter bandwidth (SSB) Programmable (1)
- -121
- -107
1-
-13 -10
-118
-104
255
-
-37 -33
-21 -18
- 10
- 20
-
-
-
-
dBm
dBm
kHz
dBc
dBm
dBm
kHz
kHz
- 40
-
kHz
- 200
-
kHz
© Semtech 2008
www.semtech.com
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Information Total 30 Pages
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