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RF2504 Schematic ( PDF Datasheet ) - RF Micro Devices

Teilenummer RF2504
Beschreibung VCO/HIGH-ISOLATION BUFFER AMPLIFIER
Hersteller RF Micro Devices
Logo RF Micro Devices Logo 




Gesamt 8 Seiten
RF2504 Datasheet, Funktion
Preliminary
12
RF2504
VCO/HIGH-ISOLATION BUFFER AMPLIFIER
Typical Applications
• 2-Way Paging
• ISM Band Systems
• Wireless Local Loop Systems
• GPS Receivers
• Cellular Systems
• Low Voltage Applications
Product Description
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 1500MHz 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.
0.196
0.189
8° MAX
0° MIN
0.157
0.150
0.244
0.229
0.034
0.016
0.018
0.014
0.008
0.004
-A-
0.050
Dimensions in mm
0.068
0.053
0.009
0.007
NOTES:
1. Shaded lead is Pin 1.
2. All dimensions are excluding
mold flash.
3. Lead coplanarity -
0.005 with respect to datum "A".
Optimum Technology Matching® Applied
üSi BJT
GaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe HBT
Si CMOS
VCC1 1
RES 2
GND1 3
NC 4
8 PD
7 GND2
6 RF OUT
5 VCC2
Package Style: SOIC-8
Features
• 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
Ordering Information
RF2504
VCO/High-Isolation Buffer Amplifier
RF2504 PCBA Fully Assembled Evaluation Board
12
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 A2 010117
12-1






RF2504 Datasheet, Funktion
RF2504
Preliminary
Evaluation Board Schematic
915MHz Operation
(Download Bill of Materials from www.rfmd.com.)
P1-1
P1-3
P1
1 PD
2 GND
3 VCC
P2
P2-1 1 VTUNE
2 GND
NC 3
VCC
VTUNE
C6
100 pF
R1
47 k
D1*
C9
10 µF
L2
12 nH
C3
100 pF
C4
100 pF
*Alpha SMV1235-011
1
2
3
4
2504400-
PD
C1 C8
8
100 pF
10 µF
C5
7 100 pF
RF OUT
J1
6 L1
27 nH
5 VCC
C2
100 pF
C7
10 µF
12
12-6
Rev A2 010117

6 Page







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