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HO1081-3
?
SAW Frequency Stabilization
?
?
Fundamental-Mode Oscillation at 1090.0 MHz
Ideal for ATC/TCAS Transponder Applications
1090.0 MHz
?
Complies with Directive 2002/95/EC (RoHS)
2 >
SAW
The frequency of this oscillator is stabilized by UHF surface-acoustic-wave (SAW) technology, providing ex-
cellent performance in a compact, rugged oscillator operating at the fundamental frequency of 1090.0 MHz.
The highly-reliable HO1081-3 is designed for use in Mode-S Air Traffic Control Transponders/Traffic Alert and
Collision Avoidance Systems (TCAS).
Absolute Maximum Ratings
Oscillator
DC Supply Voltage
Rating
Value
0 to +13
Units
VDC
Ambient Temperature
Powered
Storage
-55 to +105
-55 to +125
°C
Dip 16-8 Case
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Operating Frequency
RF Output Power
Absolute Frequency
Tolerance from 1090.0 MHz
f O
? f O
P O
1, 7
3, 6
1089.75
+10
1090.00
+12
1090.25
±250
+13
MHz
kHz
dBm
Discrete Spurious
Second Harmonics
-25
-20
Third and Higher Harmonics
Nonharmonic
2, 3, 4
-35
<-100
-30
-80
dBc
SSB Phase Noise
1 kHz Offset
10 kHz Offset
2, 3, 4
-90
-110
dBc/Hz
RF Impedance
Nominal Impedance
Operating Load VSWR
Z O
G L
3
3, 5
50
1.5:1
?
DC Power Supply
Operating Voltage
Operating Current
V CC
I CC
3, 6
11.75
12.00
37
12.25
40
VDC
mA
Operating Ambient Temperature
T A
3, 6
-55
+105
°C
Lid Symbolization (YY=Year, WW=Week)
CAUTION: Electrostatic Sensitive Device. Observe precautions for
handling. COCOM CAUTION: Approval by the U.S. Department of
Commerce is required prior to export of this device.
Notes:
RFM HO1081-3 YYWW
BLOCK DIAGRAM
V CC
1.
One or more of the following United States patents apply: 4,760,352; 5,787,117; and
RF OUTPUT
2.
7,260,375.
Unless noted otherwise, all specifications are listed at T A = +25°C ±2°C, V CC = nom-
SAW Oscillator
Buffer Amplifier
3.
inal voltage ±0.01 VDC, and load impedance = 50 ? with VSWR ≤ 1.5:1.
The design, manufacturing process, and specifications of this device are subject to
change without notice.
ELECTRICAL CONNECTIONS
4.
Applies to oscillator only and not to sidebands caused by external electrical or
mechanical sources. (Dedicated external voltage regulation with low-frequency filter-
Ground 1
Ground 2
VCC
15 Ground
ing for the DC power supply and proper circuit board layout are recommended for
optimum spectral purity.)
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5.
For specified maximum operating load VSWR,any angle, at F O . No instability or
damage will occur for any passive load impedance.
Ground 7
10 Ground
6.
For any combination of V CC and T A within the specified operating ranges.
Output 8
9
Ground
7.
Applies for any combination of Note 5 and 6 conditions.
www.RFM.com E-mail: info@rfm.com
?2009 by RF Monolithics, Inc.
Page 1 of 2
HO1081-3 - 4/24/09
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