Preliminary
RF2506
VHF/UHF VCO/HIGH-ISOLATION
BUFFER AMPLIFIER
12
Typical Applications
• Low Voltage
• Wireless LANs
• IF LO for 2.45GHz ISM Band Systems
• Wireless Local Loop
• Digital Cordless Phones
Product Description
The RF2506 is an integrated oscillator and buffer ampli-
fier chain designed to achieve low sensitivity to fluctua-
tions in load impedance and power supply noise, while
maintaining superior phase noise performance. The IC
offers great flexibility, yet is easy to use. This product was
designed for use in applications with low supply voltages.
It has a power-down feature and is designed to operate
from 10MHz to 1000MHz with the help of an external res-
onator. Frequency control is achieved with an external
varactor diode. The IC’s ease of use, reduced load pull-
ing, small size, and low cost make it an ideal LO (Local
Oscillator) for wireless applications in the VHF/UHF
range. The RF2506 was designed to operate with the
2.4GHz chipset; specifically with the IF portion of the
RF2518 PLL/synthesizer.
Optimum Technology Matching® Applied
Si BJT
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
0.192
+ 0.008
0.012
0.006
+ 0.003
A
0.0256
0.118
+ 0.004 sq.
6° MAX
0° MIN
0.021
+ 0.004
0.006
+ 0.002
0.034
NOTES:
1. Shaded lead is pin 1.
2. All dimensions are exclusive of flash,
protrusions or burrs.
3. Lead coplanarity: 0.002 with respect
to datum "A".
Package Style: MSOP-8
ü
Si Bi-CMOS
Features
• High-Isolation/Reduced Load Pulling
• Low Current Consumption
• -7dBm Output Power
12
PLLs and VCOs
VCC1
GND1
FDBK
VTUNE
1
2
3
4
8
7
6
5
PD
VCC2
GND2
RF OUT
• Digitally Controlled Power Down Mode
• 10MHz to 1GHz Operating Range
• Single 2.7V to 3.6V Supply
Ordering Information
RF2506
RF2506 PCBA
VHF/UHF VCO/High-Isolation Buffer Amplifier
Fully Assembled Evaluation Board
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
Rev A1 000908
12-9
RFMD [ RF MICRO DEVICES ]
