RF2926PCBA RFMD [RF Micro Devices], RF2926PCBA Datasheet

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RF2926PCBA

Manufacturer Part Number
RF2926PCBA
Description
UHF DUAL CONVERSION TRANSCEIVER
Manufacturer
RFMD [RF Micro Devices]
Datasheet
Product Description
The RF2926 is a monolithic integrated circuit intended for
use as a low cost FM transceiver. The device is provided
in 48-lead plastic TQFP packaging and is designed to
provide a dual conversion, half-duplex transceiver. The
chip is intended for linear (AM, FM) or digital (ASK, FSK,
OOK) applications in the North American 915MHz 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. Separate RX
ENABL, TX ENABL, and PLL ENABL lines allow for half
duplex operation as well as turning on the VCO to give
the synthesizer time to settle and complete power down-
mode.
Optimum Technology Matching® Applied
ü
Rev A5 010404
Typical Applications
MIX OUT+
• Wireless Meter Reading
• Keyless Entry Systems
• 433/868/915MHz ISM Band Systems
MIX OUT-
LNA OUT
Si BJT
Si Bi-CMOS
TX OUT
MIX CA
MIX IN
RX IN
43
10
12
13
2
4
8
Functional Block Diagram
Control
Gain
46
15
14
44
16
GaAs HBT
SiGe HBT
18
37
RSSI
25
11
36
20
21
39
22
GaAs MESFET
Si CMOS
23
24
35
34
31
30
28 DEMOD IN
26 FM OUT
27
VCO OUT
MOD IN
RESNTR-
RESNTR+
DATA REF
• Wireless Data Transceiver
• Wireless Security Systems
• Battery Powered Portable Devices
Features
Ordering Information
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
• Monolithic Integrated Transceiver
• 2.7V to 5.0V Supply Voltage
• Narrow Band and Wide Band FM/FSK
• 300MHz to 1000MHz Frequency Range
• 130MHz Bandwidth in First IF
• 5mW Output Power at 433MHz
RF2926
RF2926 PCBA
UHF DUAL CONVERSION TRANSCEIVER
.362
.346
7°MAX
0°MIN
Package Style: LQFP-48
UHF Dual Conversion Transceiver
Fully Assembled Evaluation Board
.362
.346
.280
.272
.031
.021
.007
MAX
.011
.007
.280
.272
.057
.053
RF2926
http://www.rfmd.com
Fax (336) 664 0454
Tel (336) 664 1233
.006
.002
.020
11-185
11

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RF2926PCBA Summary of contents

Page 1

Typical Applications • Wireless Meter Reading • Keyless Entry Systems • 433/868/915MHz ISM Band Systems Product Description The RF2926 is a monolithic integrated circuit intended for use as a low cost FM transceiver. The device is provided in 48-lead ...

Page 2

RF2926 Absolute Maximum Ratings Parameter Supply Voltage Control Voltages Input RF Level Output Load VSWR Operating Ambient Temperature Storage Temperature Parameter Overall RF Frequency Range VCO VCO Frequency Range VCO OUT Level VCO OUT Impedance Transmit Section Max Modulation Frequency ...

Page 3

Parameter Min. Second IF Section IF Frequency Range 0.1 Voltage Gain IF2 Input Impedance IF2 Output Impedance Demod Input Impedance FM Output Impedance Data Output Impedance FM Output Bandwidth Data Output Bandwidth 1.4 Data Output Level 0.3 FM Output DC ...

Page 4

RF2926 Pin Function Description 1 TX ENABL Enables the transmitter circuits. TX ENABL>2.0V powers up all trans- mitter functions. TX ENABL<1.0V turns off all transmitter functions except the PLL functions OUT RF output pin for the transmitter electronics. ...

Page 5

Pin Function Description 16 IF1 BP- See pin 14. 17 GND7 Ground connection for 40dB IF limiting amplifier. Keep traces physically short and connect immediately to ground plane for best performance. 18 IF1 OUT IF output from the 40dB limiting ...

Page 6

RF2926 Pin Function Description 30 RESNTR+ This port is used to supply DC voltage to the VCO as well as to tune the center frequency of the VCO. Equal value inductors should be con- nected to this pin and pin ...

Page 7

Pin Function Description 46 LVL ADJ This pin is used to vary the transmitter output power. An output level adjustment range greater than 12dB is provided through analog voltage control of this pin. DC current of the transmitter power amp ...

Page 8

RF2926 11 11-192 Application Schematic 915MHz Rev A5 010404 ...

Page 9

Evaluation Board Layout Board Size 3.04” x 3.04” Board Thickness 0.031”, Board Material FR-4 Rev A5 010404 RF2926 11 11-193 ...

Page 10

RF2926 11 11-194 Rev A5 010404 ...

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