XE1283SKC915XE1 Semtech, XE1283SKC915XE1 Datasheet - Page 13
XE1283SKC915XE1
Manufacturer Part Number
XE1283SKC915XE1
Description
KIT STARTER FOR XE1283 915MHZ
Manufacturer
Semtech
Series
TrueRF™r
Type
Transceiverr
Datasheet
1.XE1283SKC433XE1.pdf
(25 pages)
Specifications of XE1283SKC915XE1
Contents
Processor Boards, Modules, Batteries, Antennas, Serial Cable and Software CD
For Use With/related Products
XE1283 (915MHz)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
4
4.1
The XE1203F is a direct conversion (Zero-IF) half-duplex data transceiver. It includes a receiver, a transmitter, a
frequency synthesizer and some service blocks. The circuit operates in the three ISM frequency ranges (434 MHz,
868MHz and 915MHz) and uses 2-level FSK modulation. In a typical application, the XE1203F is programmed by the
microcontroller through the 3-wire serial bus SI, SO, SCK to write to and read from the configuration registers.
The XE1203F consists of 4 main functional blocks.
The receiver converts the incoming 2-level FSK modulated signal into a synchronized bit stream. The receiver is
composed of a low-noise amplifier, down-conversion mixers, base band filters, base band amplifiers, limiters,
demodulator and bit synchronizer. The bit synchronizer transforms the data output of the demodulator into a glitch-free bit
© Semtech 2005
GENERAL DESCRIPTION
XE1203F BRIEF DESCRIPTION
MATCHING
NETWORK
MATCHING
NETWORK
RFA
RFB
RFOUT
PA
LNA
LO_BUF
VCO
TKA
TANK
VCO
SHIFTER
PHASE
DIVIDER
MMOD
TKB
Figure 6: XE1203 functional block diagram
FAMP
FAMP
FILTER
LOOP
LFB
IREF
CH PUMP
DIVCTL
PFD
LPF
LPF
CLKXTAL
BBAMP
BBAMP
13
OSCILLATOR
Synthesizer
XTA
XTAL
modulator
/n
LIM
XTB
LIM
CLKOUT
DEMOD
XE1203F
CLOCK OUT
/n
RSSI
FEI
TSUPP TMOD(3:0)
DECODER
MATCHING
BITSYNC
BARKER
PATTERN
11 Bits
CONTROL
DATA
ENCODER
CONTROL
BARKER
XE1283
LOGIC
11 Bits
IREF
POR
PATTERN
POR
www.semtech.com
SWITCH
DATAIN
DCLK
DATA
SCK
SO
EN
SI