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Product Description
Ordering Information
Typical Applications
Features
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
SiGe HBT
Si CMOS
25
26
29
31
32
8
MIX IN
6
LNA OUT
4
RX IN
2
TX OUT
1
TX ENABL
24
RESNTR-
23
MOD IN
22
DATA REF
21
DEMOD IN
19
IF2 BP-
18
IF2 BP+
17
IF2 IN
PA
LNA
Control
Logic
Gain
Control
Linear
RSSI
27
28
30
3
GND2
5
GND1
7
GND3
9
10
11
12
13
14
15
16
20
GND6
RF2945
433/868/915MHZ FSK/ASK/OOK TRANSCEIVER
• Wireless Meter Reading
• Keyless Entry Systems
• 433, 868 and 915MHz ISM Band Systems
• Wireless Data Transceiver
• Wireless Security Systems
• Battery-Powered Portable Devices
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 433/868 MHz 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.
• 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
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)
11
Rev A10 000919
7° MAX
0° MIN
+ 0.15
0.10
0.60
0.127
7.00
+0.20 sq.
5.00
+0.10 sq.
0.22
+0.05
Dimensions in mm.
0.15
0.05
-A-
1.40
+0.05
0.50
Package Style: LQFP-32_5x5
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