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Preliminary
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
1
2
3
4
8
7
6
5
VCC1
RES
GND1
NC
PD
GND2
RF OUT
VCC2
RF2504
VCO/HIGH-ISOLATION BUFFER AMPLIFIER
• 2-Way Paging
• ISM Band Systems
• Wireless Local Loop Systems
• GPS Receivers
• Cellular Systems
• Low Voltage Applications
The RF2504 is an integrated oscillator and buffer ampli-
fier chain designed to achieve extremely low sensitivity to
fluctuations in load impedance and power supply noise,
thereby greatly reducing load pulling and pushing. 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 700MHz to 1500 MHz with the help of an external
resonator. 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 almost any wireless application.
• High-Isolation / Reduced Load Pulling
• Low Current Consumption
• -6dBm Output Power
• Digitally Controlled Power Down Mode
• 700MHz to 1500MHz Operating Range
• Single 2.2V to 5V Supply
RF2504
VCO/High-Isolation Buffer Amplifier
RF2504 PCBA
Fully Assembled Evaluation Board
12
Rev A2 010117
0.244
0.229
0.157
0.150
0.018
0.014
0.050
0.068
0.053
NOTES:
1. Shaded lead is Pin 1.
2. All dimensions are excluding
mold flash.
3. Lead coplanarity -
0.005 with respect to datum "A".
Dimensions in mm
0.196
0.189
0.008
0.004
-A-
8° MAX
0° MIN
0.034
0.016
0.009
0.007
Package Style: SOIC-8
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