VANLONG SF821

821.50 MHz SAW Filter
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Ideal for Reciver in 821.50 MHz
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Rugged, Hermetic, Low Profile F-11 Package
SF821
Absolute Maximum Rating (Ta=25°C)
Parameter
Rating
Unit
CW RF Power Dissipation
P
+10
dBm
DC Voltage VDC Between Any Two Pins
VDC
±30
V
Operating Temperature Range
TA
-10 ~ +60
°C
Storage Temperature Range
Tstg
-40 ~ +85
°C
Electronic Characteristics
Parameter
Sym
Minimum
Typical
Maximum
Unit
fC
NS
821.50
NS
MHz
IL
-
4.0
5.5
dB
3dB Bandwidth
BW3
-
±8.0
-
MHz
Usable Bandwidth
BW
-
±1.0
-
MHz
∆α
-
1.0
1.5
dB
45
55
-
dB
Nominal Frequency (at 25°C)
(Center frequency between 3dB point)
Insertion Loss
Amplitude Ripple (p-p)
820.50 … 822.50 MHz
820.50 … 822.50 MHz
Attenuation
DC … 791.50 MHz
αrel
-
4.0
5.5
dB
40
40
-
dB
|fA|
-
-
10
ppm/yr
DC Insulation Resistance Between any Two Pins
-
1.0
-
-
MΩ
Input / Output Impendance (nominal)
-
-
50
-
Ω
820.50 … 822.50 MHz
851.50 … 1021.5 MHz
Frequency Aging
Absolute Value during the First Year
NS = Not Specified
Notes:
1.
The frequency fC is defined as the midpoint between the 3dB
frequencies.
2.
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, fC. Note
that insertion loss, bandwidth, and passband shape are dependent
on the impedance matching component values and quality.
3.
Unless noted otherwise, specifications apply over the entire
specified operating temperature range.
Phone: +86 10 6301 4184
Fax: +86 10 6301 9167
© April 2004 by Vanlong Technology Co., Ltd.
4.
The specifications of this device are based on the test circuit
shown above and subject to change or obsolescence without
notice.
5.
All equipment designs utilizing this product must be approved by
the appropriate government agency prior to manufacture or sale.
6.
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.
7.
For questions on technology, prices and delivery please contact
our sales offices or email to [email protected].
Email: [email protected]
Web: http://www.vanlong.com
SF821
821.50 MHz SAW Filter
Package Dimensions (F-11)
Electrical Connections
Terminals
1
2
3
4
Connection
Input/Output
Case Ground
Case Ground
Output/Input
Package Dimensions
Dimensions
A
B
C
D
E
F
Marking
Nom. (mm)
11.0
4.5
3.2
0.45
5.0
2.54
Tol. (mm)
±0.3
±0.3
±0.3
±0.1
±0.5
±0.2
Test Circuit
SF821
From 50Ω source
To 50Ω load
Ink Marking
Color: Black or Blue
Typical Frequency Response
Phone: +86 10 6301 4184
Fax: +86 10 6301 9167
© April 2004 by Vanlong Technology Co., Ltd.
Email: [email protected]
Web: http://www.vanlong.com
SF821