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RF Micro Devices - 433/868/915MHZ FSK/ASK/OOK TRANSCEIVER

Numéro de référence RF2945
Description 433/868/915MHZ FSK/ASK/OOK TRANSCEIVER
Fabricant RF Micro Devices 
Logo RF Micro Devices 





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RF2945 fiche technique
RF2945
11
433/868/915MHZ FSK/ASK/OOK TRANSCEIVER
Typical Applications
• Wireless Meter Reading
• Wireless Data Transceiver
• Keyless Entry Systems
• Wireless Security Systems
• 433, 868 and 915MHz ISM Band Systems • Battery-Powered Portable Devices
Product Description
The RF2945 is a monolithic integrated circuit intended for
use as a low cost FM transceiver. The device is provided
in 32-lead plastic LQFP packaging and is designed to be
used with a PLL IC to provide a fully functional FM trans-
ceiver. The chip is intended for digital (ASK, FSK, OOK)
applications in the North American 915MHz ISM band
and European 433/868MHz ISM bands. The integrated
VCO has a buffered output to feed the RF signal back to
the PLL IC to form the frequency synthesizer. Internal
decoding of the RX ENABL and TX ENABL lines allow for
half duplex operation as well as turning on the VCO to
give the synthesizer time to settle and complete power
downmode. The DATA REF line allows the use of an
external capacitor to control the DC level at the adaptive
Data Slicer input for setting the bit decision threshold.
Optimum Technology Matching® Applied
üSi BJT
GaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe HBT
Si CMOS
32 31 30 29 28 27 26
25
TX ENABL 1
TX OUT 2
Control
Logic
PA
Gain
Control
GND2 3
RX IN 4
GND1 5
LNA OUT 6
LNA
GND3 7
MIX IN 8
Linear
RSSI
9 10
11 12 13 14 15 16
24 RESNTR-
23 MOD IN
22 DATA REF
21 DEMOD IN
20 GND6
19 IF2 BP-
18 IF2 BP+
17 IF2 IN
Functional Block Diagram
7.00
+ 0.20 sq.
0.22
+ 0.05
-A-
0.15
0.05
0.50
5.00
+ 0.10 sq.
7° MAX
0° MIN
1.40
+ 0.05
Dimensions in mm.
0.60
+ 0.15
0.10
0.127
Package Style: LQFP-32_5x5
Features
• Fully Monolithic Integrated Transceiver
• 2.4V to 5.0V Supply Voltage
• Narrowband and Wideband FSK
• 300MHz to 1000MHz Frequency Range
• 10dB Cascaded Noise Figure
• 10mW Output Power With Power Control
Ordering Information
RF2945
433/868/915MHz FSK/ASK/OOK Transceiver
RF2945 PCBA-L Fully Assembled Evaluation Board (433MHZ)
RF2945 PCBA-M Fully Assembled Evaluation Board (868MHZ)
RF2945 PCBA-H Fully Assembled Evaluation Board (915MHz)
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
11
Rev A10 000919
11-215

PagesPages 24
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