RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
E-mail: info@rfm.com
Page 1 of 2
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
HO1078-111201
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Operating Frequency
Absolute Frequency
f
O
1, 7
1029.750
1030.0
1030.250
MHz
Tolerance from 1030.0 MHz
f
O
250
kHz
RF Output Power
P
O
3, 6
+8
+10
+14
dBm
Discrete Spurious
Second Harmonics
2, 3, 4
-25
-20
dBc
Third and Higher Harmonics
-35
-30
Nonharmonic
<-100
-80
SSB Phase Noise
1 kHz Offset
2, 3, 4
-100
-90
dBc/Hz
10 kHz Offset
-120
-110
RF Impedance
Nominal Impedance
Z
O
3
50
Operating Load VSWR
G
L
3, 5
1.5:1
DC Power Supply
Operating Voltage
V
CC
3, 6
11.75
12.0
12.25
VDC
Operating Current
I
CC
35
40
mA
Lid Symbolization (YY=Year, WW=Week)
RFM HO1078 YYWW
Dip 16-8 Case
SAW Frequency Stabilization
Fundamental-Mode Oscillation at 1030.0 MHz
Ideal for Air Traffic Control Transponder 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 1030.0
MHz. The highly-reliable HO1078 is designed for use in air traffic control (ATC) radar transponders in com-
mercial aviation. It is a commercial version of the HO1080 oscillator.
Absolute Maximum Ratings
Rating
Value
Units
DC Supply Voltage
0 to +13
VDC
Ambient Temperature
Powered
-40 to +85
C
Storage
-40 to -100
1030.0 MHz
SAW
Oscillator
HO1078
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.
One or more of the following United States patents apply: 4,616,197; 4,610,681; and
4,761,616.
2.
Unless noted otherwise, all specifications are listed at T
A
= +25C 2C, V
CC
= nom-
inal voltage 0.01 VDC, and load impedance = 50
with VSWR
1.5:1.
3.
The design, manufacturing process, and specifications of this device are subject to
change without notice.
4.
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.)
5.
For specified maximum operating load VSWR (any angle) at F
O
. (No instability or
damage will occur for any passive load impedance.)
6.
For any combination of V
CC
and T
A
within the specified operating ranges.
7.
Applies for any combination of Note 5 and 6 conditions.
BLOCK DIAGRAM
ELECTRICAL CONNECTIONS
RF OUTPUT
V CC
Buffer Amplifier
SAW Oscillator
Top
View
Ground 1
V
CC
Ground 2
Ground 7
Output 8
15 Ground
10 Ground
9
Ground
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