HO1324
•
•
•
SAW Frequency Stabilization
Fundamental-Mode Oscillation at 640.0 MHz
0.8” x 0.5” x 0.25” Metal Dip Case
This general-purpose oscillator is stabilized by surface-acoustic-wave (SAW) technology. Fundamental oscil-
lation at 640.0 MHz eliminates all internally generated spurious outputs except integral harmonics of 640.0
MHz. The compact size of the rugged, metal, hermetically-sealed case makes this oscillator suitable for a va-
riety of applications.
640.0 MHz
SAW
Oscillator
Absolute Maximum Ratings
Rating
DC Supply Voltage
Ambient Temperature
Powered
Storage
Value
0 to +13
-40 to +70
-40 to +85
Units
VDC
°C
Dip 14-8 Case
Electrical Characteristics
Characteristic
Operating Frequency
RF Output Power
Spurious Outputs
Second Harmonics
Third and Higher Harmonics
RF Impedance
DC Power Supply
Nonharmonic
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
-30
RFM HO1324 YYWW
3, 6, 7
<-80
50
7.9
Absolute Frequency
Tolerance from 640.0 MHz
Sym
f
O
∆f
O
P
O
Notes
1, 7
3, 6
Minimum
639.800
+10
Typical
640.0
Maximum
640.200
±200
+13
-15
-20
-60
dBc
Ω
1.5:1
8.9
40
+70
VDC
mA
°C
Units
MHz
kHz
dBm
3
3, 5
3, 6
8.4
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 specification 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 1
Case Ground 2
CC
13 Case Ground
5.
6.
7.
Top
View
Case Ground 6
RF Output 7
9 Case Ground
8
VCC
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-9148
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
HO1324-101899
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