418.00 MHz SAW Filter
•
•
•
•
Designed to Provide Front-end selectivity in 418.00 MHz
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Rugged, Hermetic, Low Profile TO-39 Package
SF418
Absolute Maximum Rating (Ta=25°C)
Parameter
CW RF Power Dissipation
DC Voltage V
DC Between Any Two Pins
Operating Temperature Range
Storage Temperature Range
P
V
DC
Rating
+10
±30
-10 ~ +60
-40 ~ +85
Electronic Characteristics
Unit
dBm
V
°C
°C
T
A
T
stg
Parameter
Nominal Frequency (at 25°C)
(Center frequency between 3dB point)
Insertion Loss
3dB Passband
Passband Ripple
at
f
C
- 21.4 MHz (Image)
Rejection
at
f
C
- 10.7 MHz (LO)
Ultimate
Operating Temperature Range
Temperature Stability
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
Absolute Value during the First Year
Sym
f
C
Minimum
NS
-
-
-
40
20
-
-10
25
-
-
-
1.0
Typical
418.00
3.5
600
-
50
30
60
-
-
f
C
0.032
-
-
Maximum
NS
5.0
800
±1.0
-
-
-
+60
55
-
-
10
-
Unit
MHz
dB
KHz
dB
dB
dB
dB
°C
°C
MHz
ppm/C
2
IL
BW
3
∆α
-
-
-
T
C
T
O
f
O
FTC
|f
A
|
-
ppm/yr
MΩ
DC Insulation Resistance Between any Two Pins
NS = Not Specified
Notes:
1.
The frequency
f
C
is defined as the midpoint between the 3dB
frequencies.
Unless noted otherwise, all measurements are made with the filter
installed in the specified test fixture that is connected to a 50Ω test
system with VSWR
≤
1.2:1. The test fixture L and C are adjusted
for minimum insertion loss at the filter center frequency,
f
C
. Note
that insertion loss, bandwidth, and passband shape are dependent
on the impedance matching component values and quality.
Unless noted otherwise, specifications apply over the entire
specified operating temperature range.
Frequency aging is the change in
f
C
with time and is specified at
+65°C or less. Aging may exceed the specification for prolonged
temperatures above +65°C. Typically, aging is greatest the first
year after manufacture, decreasing in subsequent years.
5.
Turnover temperature,
T
0
, is the temperature of maximum (or
turnover) frequency,
f
0
. The nominal frequency at any case
temperature, T
C
, may be calculated from:
f
=
f
0
[1 -
FTC
(T
0
-
T
C
)
2
].
The specifications of this device are based on the test circuit
shown above and subject to change or obsolescence without
notice.
All equipment designs utilizing this product must be approved by
the appropriate government agency prior to manufacture or sale.
Our liability is only assumed for the Surface Acoustic Wave (SAW)
component(s) per se, not for applications, processes and circuits
implemented within components or assemblies.
For questions on technology, prices and delivery please contact
our sales offices or email to sales@vanlong.com.
2.
6.
7.
3.
8.
4.
9.
Phone: +86 10 6301 4184
Fax: +86 10 6301 9167
Email: sales@vanlong.com
Web: http://www.vanlong.com
SF418
©
April 2004 by Vanlong Technology Co., Ltd.
Microcontroller MCU
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