HO1079
•
•
•
SAW Frequency Stabilization
Fundamental-Mode Oscillation at 1090.0 MHz
Ideal for Air Traffic Control Applications
The frequency of this oscillator is stabilized by surface-acoustic-wave (SAW) technology. This results in ex-
cellent performance from a compact, rugged, oscillator operating at the fundamental frequency of 1090.0
MHz. The highly-reliable HO1079 is designed for use in air traffic control (ATC) radar transponders in com-
mercial aviation. It is a commercial version of the HO1081 oscillator.
1090.0 MHz
SAW
Oscillator
Absolute Maximum Ratings
Rating
DC Supply Voltage
Ambient Temperature
Powered
Storage
Value
0 to +13
-40 to +85
-40 to -100
Units
VDC
°C
Dip 16-8 Case
Electrical Characteristics
Characteristic
Operating Frequency
RF Output Power
Discrete Spurious
Second Harmonics
Third and Higher Harmonics
SSB Phase Noise
RF Impedance
DC Power Supply
Nonharmonic
1 kHz Offset
10 kHz Offset
Nominal Impedance
Operating Load VSWR
Operating Voltage
Operating Current
Operating Ambient Temperature
Lid Symbolization (YY=Year, WW=Week)
Z
O
G
L
V
CC
I
CC
T
A
3, 6
-40
RFM HO1079 YYWW
2, 3, 4
AbsoluteFrequency
Tolerance from 310.0 MHz
Sym
f
O
Df
O
P
O
3, 6
+8
+10
-25
-35
<-100
-100
-120
50
11.75
1.5:1
12.25
40
+85
Notes
1, 7
Minimum
1089.750
Typical
1090
Maximum
1090.250
±250
+14
-20
-30
-80
-90
-110
Units
MHz
kHz
dBm
dBc
2, 3, 4
3
3, 5
3, 6
dBc/Hz
W
VDC
mA
°C
12.0
35
BLOCK DIAGRAM
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:
1.
2.
3.
4.
One or more of the following United States patents apply: 4,616,197; 4,610,681; and
4,761,616.
Unless noted otherwise, all specifications are listed at T
A
= +25°C ±2°C, V
CC
= nom-
inal voltage ±0.01 VDC, and load impedance = 50
Ω
with VSWR
≤
1.5:1.
The design, manufacturing process, and specifications of this device are subject to
change without notice.
Applies to oscillator only and not to sidebands caused by external electrical or
mechanical sources. (Dedicated external voltage regulation with low-frequency filter-
ing for the DC power supply and proper circuit board layout are recommended for
optimum spectral purity.)
For specified maximum operating load VSWR (any angle) at F
O
. (No instability or
damage will occur for any passive load impedance.)
For any combination of V
CC
and T
A
within the specified operating ranges.
Applies for any combination of Note 5 and 6 conditions.
RF OUTPUT
SAW Oscillator
Buffer Amplifier
V CC
ELECTRICAL CONNECTIONS
VCC
15 Ground
Ground 1
Ground 2
Top
View
5.
6.
7.
Ground 7
Output 8
10 Ground
9
Ground
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
HO1079-111201
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RFM [ RF MONOLITHICS, INC ]
