HO1091
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•
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SAW Frequency Stabilized
Fundamental-mode Oscillation at 1090 MHz
Ideal for ATC Transponder Applications
Complies with Directive 2002/95/EC (RoHS)
2 >
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 MHz. The
highly-reliable HO1091 is designed for use in Air Traffic Control Transponders.
1090 MHz
SAW
Oscillator
Absolute Maximum Ratings
Rating
DC Supply Voltage
Ambient Temperature
Powered
Storage
Value
0 to +13
-40 to +85
-55 to +125
Units
VDC
°C
Dip 16-8 Case
Electrical Characteristics
Characteristic
Operating Frequency
RF Output Power
Discrete Spurious
Second Harmonics
Third and Higher Harmonics
Nonharmonic
SSB Phase Noise
RF Impedance
DC Power Supply
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
2, 3, 4
3
3, 5
3, 6
3, 6
11.75
-40
RFM HO1091 YYWW
12.00
37
50
1.5:1
12.25
40
+85
VDC
mA
°C
2, 3, 4
Absolute Frequency
Tolerance from 1090.0 MHz
Sym
f
O
∆f
O
P
O
Notes
1, 7
3, 6
Minimum
1089.2
+10
Typical
1090.0
+12
-25
-35
< -100
Maximum
1090.8
±800
+13
-20
-30
-80
-85
-110
dBc/Hz
Ω
dBc
Units
MHz
kHz
dBm
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: 4,760,352; 5,787,117; and
7,260,375.
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 dam-
age 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
www.RFM.com E-mail: info@rfm.com
©2010 by RF Monolithics, Inc.
Page 1 of 2
HO1091 - 10/27/10
Microcontroller MCU
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